566 lines
25 KiB
C#
566 lines
25 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Collections;
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using System.Text;
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using System.ComponentModel;
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using System.Linq;
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using CPF.Controls;
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using System.Linq.Expressions;
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using System.Reflection;
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using System.Diagnostics;
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namespace CPF
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{
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/// <summary>
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/// 设置绑定
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/// </summary>
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public class Bindings : IEnumerable
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{
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CpfObject owner;
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internal Bindings(CpfObject owner)
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{
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this.owner = owner;
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}
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internal HybridDictionary<string, List<Binding>> binds = new HybridDictionary<string, List<Binding>>();
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/// <summary>
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/// 添加绑定
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/// </summary>
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/// <param name="propertyName">绑定的目标属性名</param>
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/// <param name="sourcePropertyName">绑定的数据源对象的属性名</param>
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/// <param name="source">数据源对象，如果为空则绑定到DataContext对象上</param>
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/// <param name="bindingMode">绑定模式</param>
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/// <param name="convert">源到目标数据转换</param>
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/// <param name="convertBack">目标到源数据转换</param>
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/// <param name="SourceToTargetError ">源到目标数据转换出现异常时</param>
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/// <param name="TargetToSourceError ">目标到源数据转换出现异常时</param>
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public Binding Add(string propertyName, string sourcePropertyName, object source = null, BindingMode bindingMode = BindingMode.OneWay, Func<object, object> convert = null, Func<object, object> convertBack = null, Action<Binding, object, Exception> SourceToTargetError = null, Action<Binding, object, Exception> TargetToSourceError = null)
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{
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return AddBinding(propertyName, sourcePropertyName, source, bindingMode, convert, convertBack, SourceToTargetError, TargetToSourceError);
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}
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public Binding Add<S, T>(string propertyName, string sourcePropertyName, object source = null, BindingMode bindingMode = BindingMode.OneWay, Func<S, T> convert = null, Func<T, S> convertBack = null, Action<Binding, object, Exception> SourceToTargetError = null, Action<Binding, object, Exception> TargetToSourceError = null)
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{
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Func<object, object> _convert = null;
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if (convert != null)
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{
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_convert = a =>
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{
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if (a != null && typeof(S).IsValueType && typeof(S) != a.GetType() && ObjectExtenstions.ConvertTypes.Contains(typeof(S)))
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{
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a = Convert.ChangeType(a, typeof(S));
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}
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return convert((S)a);
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};
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}
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Func<object, object> _cb = null;
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if (convertBack != null)
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{
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_cb = a =>
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{
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if (a != null && typeof(T).IsValueType && typeof(T) != a.GetType() && ObjectExtenstions.ConvertTypes.Contains(typeof(T)))
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{
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a = Convert.ChangeType(a, typeof(T));
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}
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return convertBack((T)a);
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};
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}
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return AddBinding(propertyName, sourcePropertyName, source, bindingMode, _convert, _cb, SourceToTargetError, TargetToSourceError);
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}
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private Binding AddBinding(string propertyName, string sourcePropertyName, object source, BindingMode bindingMode, Func<object, object> convert, Func<object, object> convertBack, Action<Binding, object, Exception> SourceToTargetError, Action<Binding, object, Exception> TargetToSourceError)
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{
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if (string.IsNullOrEmpty(propertyName) || string.IsNullOrEmpty(sourcePropertyName))
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{
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throw new Exception("属性名不能为空！");
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}
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var b = new Binding(source, sourcePropertyName, propertyName, bindingMode) { Convert = convert, ConvertBack = convertBack, SourceToTargetError = SourceToTargetError, TargetToSourceError = TargetToSourceError };
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List<Binding> list;
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if (!owner.Bindings.binds.TryGetValue(propertyName, out list))
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{
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list = new List<Binding>();
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owner.Bindings.binds.Add(propertyName, list);
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}
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list.Add(b);
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b.Owner = owner;
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if (bindingMode == BindingMode.OneWay || bindingMode == BindingMode.TwoWay)
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{
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if (source == null)
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{
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var dc = owner.DataContext;
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if (dc != null)
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{
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INotifyPropertyChanged n = dc as INotifyPropertyChanged;
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if (n != null)
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{
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//n.PropertyChanged += b.PropertyChanged;
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b.RegisterPropertyChanged(n);
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}
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b.Source = new WeakReference(dc);
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b.SourceToTarget();
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}
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}
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else
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{
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//((INotifyPropertyChanged)source).PropertyChanged += b.PropertyChanged;
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b.RegisterPropertyChanged((INotifyPropertyChanged)source);
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b.SourceToTarget();
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}
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}
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else if (bindingMode == BindingMode.OneWayToSource)
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{
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b.TargetToSource();
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}
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else if (bindingMode == BindingMode.OneTime)
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{
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b.SourceToTarget();
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}
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//Debug.WriteLine($"sourcePropertyName:{sourcePropertyName},bindingMode:{bindingMode}");
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return b;
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}
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/// <summary>
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/// 简化 DataGridCellTemplate 绑定
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/// </summary>
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/// <param name="propertyName"></param>
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/// <param name="cellTemplate"></param>
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public void Add(string propertyName, DataGridCellTemplate cellTemplate)
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{
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if (cellTemplate.Cell.Column.Binding == null)
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{
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return;
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}
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AddBinding(propertyName, cellTemplate.Cell.Column.Binding.SourcePropertyName, null, cellTemplate.Cell.Column.Binding.BindingMode, cellTemplate.Convert(cellTemplate.Cell.Column.Binding.Convert), cellTemplate.ConvertBack(cellTemplate.Cell.Column.Binding.ConvertBack), cellTemplate.Error, cellTemplate.Error);
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}
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//public void Add<T, S>(Binding<T, S> binding) where T : CpfObject where S : INotifyPropertyChanged
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//{
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//}
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///// <summary>
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///// 添加绑定到DataContext
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///// </summary>
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///// <param name="propertyName"></param>
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///// <param name="sourcePropertyName"></param>
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///// <param name="bindingMode"></param>
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///// <param name="convert"></param>
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///// <param name="convertBack"></param>
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///// <returns></returns>
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//public Binding Add(string propertyName, string sourcePropertyName, BindingMode bindingMode = BindingMode.OneWay, Func<object, object> convert = null, Func<object, object> convertBack = null)
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//{
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// return Add(propertyName, sourcePropertyName, null, bindingMode, convert, convertBack);
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//}
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/// <summary>
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/// 添加绑定到UIElement对象上，定义绑定在对应的Element层次上
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/// </summary>
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/// <param name="propertyName"></param>
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/// <param name="sourcePropertyName"></param>
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/// <param name="sourceElementLayer">UI元素层，0是自己，1是Parent，2是Parent.Parent....</param>
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/// <param name="bindingMode"></param>
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/// <param name="convert"></param>
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/// <param name="convertBack"></param>
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/// <param name="SourceToTargetError"></param>
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/// <param name="TargetToSourceError"></param>
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public Binding Add(string propertyName, string sourcePropertyName, byte sourceElementLayer, BindingMode bindingMode = BindingMode.OneWay, Func<object, object> convert = null, Func<object, object> convertBack = null, Action<Binding, object, Exception> SourceToTargetError = null, Action<Binding, object, Exception> TargetToSourceError = null)
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{
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if (string.IsNullOrEmpty(propertyName) || string.IsNullOrEmpty(sourcePropertyName))
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{
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throw new Exception("属性名不能为空！");
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}
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var b = new Binding(null, sourcePropertyName, propertyName, bindingMode) { Convert = convert, ConvertBack = convertBack, IsDataContext = false, SourceElementLayer = sourceElementLayer, SourceToTargetError = SourceToTargetError, TargetToSourceError = TargetToSourceError };
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List<Binding> list;
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if (!owner.Bindings.binds.TryGetValue(propertyName, out list))
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{
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list = new List<Binding>();
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owner.Bindings.binds.Add(propertyName, list);
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}
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list.Add(b);
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b.Owner = owner;
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return b;
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}
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public Binding Add<S, T>(string propertyName, string sourcePropertyName, byte sourceElementLayer, BindingMode bindingMode = BindingMode.OneWay, Func<S, T> convert = null, Func<T, S> convertBack = null, Action<Binding, object, Exception> SourceToTargetError = null, Action<Binding, object, Exception> TargetToSourceError = null)
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{
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Func<object, object> _convert = null;
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if (convert != null)
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{
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_convert = a =>
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{
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if (a != null && typeof(S).IsValueType && typeof(S) != a.GetType() && ObjectExtenstions.ConvertTypes.Contains(typeof(S)))
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{
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a = Convert.ChangeType(a, typeof(S));
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}
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return convert((S)a);
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};
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}
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Func<object, object> _cb = null;
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if (convertBack != null)
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{
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_cb = a =>
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{
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if (a != null && typeof(T).IsValueType && typeof(T) != a.GetType() && ObjectExtenstions.ConvertTypes.Contains(typeof(T)))
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{
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a = Convert.ChangeType(a, typeof(T));
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}
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return convertBack((T)a);
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};
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}
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return Add(propertyName, sourcePropertyName, sourceElementLayer, bindingMode, _convert, _cb, SourceToTargetError, TargetToSourceError);
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}
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/// <summary>
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/// 一般用于在设计模板的时候绑定当前页面里的元素，初始化的时候查找相对元素并绑定
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/// </summary>
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/// <param name="propertyName"></param>
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/// <param name="sourcePropertyName"></param>
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/// <param name="find">初始化的时候查找相对元素并绑定，回调的参数是当前的Owner元素</param>
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/// <param name="bindingMode"></param>
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/// <param name="convert"></param>
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/// <param name="convertBack"></param>
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/// <param name="SourceToTargetError"></param>
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/// <param name="TargetToSourceError"></param>
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public void Add(string propertyName, string sourcePropertyName, Func<UIElement, UIElement> find, BindingMode bindingMode = BindingMode.OneWay, Func<object, object> convert = null, Func<object, object> convertBack = null, Action<Binding, object, Exception> SourceToTargetError = null, Action<Binding, object, Exception> TargetToSourceError = null)
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{
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if (string.IsNullOrEmpty(propertyName) || string.IsNullOrEmpty(sourcePropertyName))
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{
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throw new Exception("属性名不能为空！");
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}
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if (find == null)
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{
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AddBinding(propertyName, sourcePropertyName, null, bindingMode, convert, convertBack, SourceToTargetError, TargetToSourceError);
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}
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else
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{
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Threading.Dispatcher.MainThread.BeginInvoke(() =>
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{
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UIElement ow;
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if (owner is AttachedNotify notify)
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{
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ow = notify.owner as UIElement;
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}
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else
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{
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ow = (UIElement)owner;
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}
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var ele = find(ow);
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if (ele != null)
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{
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Add(propertyName, sourcePropertyName, ele, bindingMode, convert, convertBack, SourceToTargetError, TargetToSourceError);
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}
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else
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{
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System.Diagnostics.Debug.WriteLine(find.ToString() + "未找到元素，无法绑定");
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}
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});
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}
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}
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/// <summary>
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/// 初始化的时候查找相对元素并绑定
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/// </summary>
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/// <typeparam name="S"></typeparam>
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/// <typeparam name="T"></typeparam>
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/// <param name="propertyName"></param>
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/// <param name="sourcePropertyName"></param>
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/// <param name="find"></param>
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/// <param name="bindingMode"></param>
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/// <param name="convert"></param>
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/// <param name="convertBack"></param>
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/// <param name="SourceToTargetError"></param>
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/// <param name="TargetToSourceError"></param>
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public void Add<S, T>(string propertyName, string sourcePropertyName, Func<UIElement, UIElement> find, BindingMode bindingMode = BindingMode.OneWay, Func<S, T> convert = null, Func<T, S> convertBack = null, Action<Binding, object, Exception> SourceToTargetError = null, Action<Binding, object, Exception> TargetToSourceError = null)
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{
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Func<object, object> _convert = null;
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if (convert != null)
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{
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_convert = a =>
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{
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if (a != null && typeof(S).IsValueType && typeof(S) != a.GetType() && ObjectExtenstions.ConvertTypes.Contains(typeof(S)))
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{
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a = Convert.ChangeType(a, typeof(S));
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}
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return convert((S)a);
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};
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}
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Func<object, object> _cb = null;
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if (convertBack != null)
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{
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_cb = a =>
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{
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if (a != null && typeof(T).IsValueType && typeof(T) != a.GetType() && ObjectExtenstions.ConvertTypes.Contains(typeof(T)))
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{
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a = Convert.ChangeType(a, typeof(T));
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}
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return convertBack((T)a);
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};
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}
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Add(propertyName, sourcePropertyName, find, bindingMode, _convert, _cb, SourceToTargetError, TargetToSourceError);
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}
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///// <summary>
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///// 一般用于在设计模板的时候绑定当前页面里的元素
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///// </summary>
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///// <typeparam name="S"></typeparam>
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///// <typeparam name="T"></typeparam>
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///// <param name="propertyName"></param>
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///// <param name="sourcePropertyName"></param>
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///// <param name="func"></param>
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///// <param name="bindingMode"></param>
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///// <param name="convert"></param>
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///// <param name="convertBack"></param>
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///// <param name="SourceToTargetError"></param>
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///// <param name="TargetToSourceError"></param>
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//public void Add<S, T>(string propertyName, string sourcePropertyName, Func<UIElement> func, BindingMode bindingMode = BindingMode.OneWay, Func<S, T> convert = null, Func<T, S> convertBack = null, Action<Binding, object, Exception> SourceToTargetError = null, Action<Binding, object, Exception> TargetToSourceError = null)
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//{
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// Func<object, object> _convert = null;
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// if (convert != null)
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// {
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// _convert = a => convert((S)a);
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// }
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// Func<object, object> _cb = null;
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// if (convertBack != null)
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// {
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// _cb = a => convertBack((T)a);
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// }
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// Add(propertyName, sourcePropertyName, func, bindingMode, _convert, _cb, SourceToTargetError, TargetToSourceError);
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//}
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///// <summary>
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///// 一般用于在设计模板的时候绑定当前页面里的元素
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///// </summary>
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///// <param name="propertyName"></param>
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///// <param name="sourcePropertyName"></param>
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///// <param name="func"></param>
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///// <param name="bindingMode"></param>
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///// <param name="convert"></param>
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///// <param name="convertBack"></param>
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///// <param name="SourceToTargetError"></param>
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///// <param name="TargetToSourceError"></param>
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///// <returns></returns>
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//public void Add(string propertyName, string sourcePropertyName, Func<UIElement> func, BindingMode bindingMode = BindingMode.OneWay, Func<object, object> convert = null, Func<object, object> convertBack = null, Action<Binding, object, Exception> SourceToTargetError = null, Action<Binding, object, Exception> TargetToSourceError = null)
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//{
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// if (string.IsNullOrEmpty(propertyName) || string.IsNullOrEmpty(sourcePropertyName))
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// {
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// throw new Exception("属性名不能为空！");
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// }
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// if (func == null)
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// {
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// AddBinding(propertyName, sourcePropertyName, null, bindingMode, convert, convertBack, SourceToTargetError, TargetToSourceError);
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// }
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// else
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// {
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// Threading.Dispatcher.MainThread.BeginInvoke(() =>
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// {
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// var ele = func();
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// if (ele != null)
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// {
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// Add(propertyName, sourcePropertyName, ele, bindingMode, convert, convertBack, SourceToTargetError, TargetToSourceError);
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// }
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// else
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// {
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// System.Diagnostics.Debug.WriteLine(func.ToString() + "未找到元素，无法绑定");
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// }
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// });
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// }
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//}
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///// <summary>
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///// 绑定到特定元素名的元素上，元素名必须是唯一的，而且必须是一起添加到可视化树或者元素已经添加到可视化树的，如果eleName为空，就绑定到DataContext
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///// </summary>
|
||
///// <param name="propertyName"></param>
|
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///// <param name="sourcePropertyName"></param>
|
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///// <param name="eleName"></param>
|
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///// <param name="bindingMode"></param>
|
||
///// <param name="convert"></param>
|
||
///// <param name="convertBack"></param>
|
||
///// <param name="SourceToTargetError"></param>
|
||
///// <param name="TargetToSourceError"></param>
|
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//public Binding Add(string propertyName, string sourcePropertyName, string eleName, BindingMode bindingMode = BindingMode.OneWay, Func<object, object> convert = null, Func<object, object> convertBack = null, Action<Binding, object, Exception> SourceToTargetError = null, Action<Binding, object, Exception> TargetToSourceError = null)
|
||
//{
|
||
// if (string.IsNullOrWhiteSpace(eleName))
|
||
// {
|
||
// return AddBinding(propertyName, sourcePropertyName, null, bindingMode, convert, convertBack, SourceToTargetError, TargetToSourceError);
|
||
// }
|
||
// if (owner is UIElement element)
|
||
// {
|
||
// Threading.Dispatcher.MainThread.BeginInvoke(() =>
|
||
// {
|
||
// if (element.Root.nameDic.TryGetValue(eleName, out UIElement ele))
|
||
// {
|
||
// Add(propertyName, sourcePropertyName, ele, bindingMode, convert, convertBack);
|
||
// }
|
||
// else
|
||
// {
|
||
// throw new Exception("未找到元素名为" + eleName + "的元素或者元素未添加到可视化树");
|
||
// }
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||
// });
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||
// }
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||
// else
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||
// {
|
||
// throw new Exception("UIElement才可以使用该方法");
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||
// }
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||
// return null;
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||
//}
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||
|
||
public void Add<S>(string propertyName, Expression<Func<S, object>> source)
|
||
{
|
||
throw new NotImplementedException();
|
||
}
|
||
|
||
/// <summary>
|
||
/// KeyValuePair<string, List<Binding>>
|
||
/// </summary>
|
||
/// <returns></returns>
|
||
public IEnumerator GetEnumerator()
|
||
{
|
||
return binds.GetEnumerator();
|
||
}
|
||
|
||
public override string ToString()
|
||
{
|
||
return "Count:" + binds.Count;
|
||
}
|
||
}
|
||
|
||
///// <summary>
|
||
///// 定义一个简化的绑定类型
|
||
///// </summary>
|
||
///// <typeparam name="T"></typeparam>
|
||
//public struct B<T>// : IB
|
||
//{
|
||
// public B(T value)
|
||
// {
|
||
// Value = value;
|
||
// //HasValue = true;
|
||
// BindingMode = null;
|
||
// SourceProperty = null;
|
||
// Source = null;
|
||
// Convert = null;
|
||
// }
|
||
// public B(string sourceProperty, BindingMode bindingMode)
|
||
// {
|
||
// Value = default;
|
||
// //HasValue = false;
|
||
// BindingMode = bindingMode;
|
||
// SourceProperty = sourceProperty;
|
||
// Source = null;
|
||
// Convert = null;
|
||
// }
|
||
// public B(string sourceProperty, BindingMode bindingMode, Func<object, object> convert)
|
||
// {
|
||
// Value = default;
|
||
// //HasValue = false;
|
||
// BindingMode = bindingMode;
|
||
// SourceProperty = sourceProperty;
|
||
// Source = null;
|
||
// Convert = convert;
|
||
// }
|
||
// public B(object source, string sourceProperty, BindingMode bindingMode)
|
||
// {
|
||
// Value = default;
|
||
// //HasValue = false;
|
||
// BindingMode = bindingMode;
|
||
// SourceProperty = sourceProperty;
|
||
// Source = source;
|
||
// Convert = null;
|
||
// }
|
||
// public B(object source, string sourceProperty, BindingMode bindingMode, Func<object, object> convert)
|
||
// {
|
||
// Value = default;
|
||
// //HasValue = false;
|
||
// BindingMode = bindingMode;
|
||
// SourceProperty = sourceProperty;
|
||
// Source = source;
|
||
// Convert = convert;
|
||
// }
|
||
// //public B(T value, string sourceProperty, BindingMode bindingMode)
|
||
// //{
|
||
// // Value = value;
|
||
// // //HasValue = true;
|
||
// // BindingMode = bindingMode;
|
||
// // SourceProperty = sourceProperty;
|
||
// // Source = null;
|
||
// //}
|
||
// public Func<object, object> Convert { get; private set; }
|
||
// public T Value { get; private set; }
|
||
// public object Source { get; private set; }
|
||
|
||
// //public bool HasValue { get; private set; }
|
||
|
||
// public string SourceProperty { get; private set; }
|
||
|
||
// public BindingMode? BindingMode { get; private set; }
|
||
|
||
// public static implicit operator B<T>(T n)
|
||
// {
|
||
// return new B<T>(n);
|
||
// }
|
||
// public static implicit operator T(B<T> n)
|
||
// {
|
||
// return n.Value;
|
||
// }
|
||
// public static implicit operator B<T>((string, BindingMode) n)
|
||
// {
|
||
// return new B<T>(n.Item1, n.Item2);
|
||
// }
|
||
// public static implicit operator B<T>((string, BindingMode, Func<object, object> convert) n)
|
||
// {
|
||
// return new B<T>(n.Item1, n.Item2, n.convert);
|
||
// }
|
||
// //public static implicit operator B<T>((T value, string, BindingMode) n)
|
||
// //{
|
||
// // return new B<T>(n.Item1, n.Item2, n.Item3);
|
||
// //}
|
||
// public static implicit operator B<T>((object source, string, BindingMode) n)
|
||
// {
|
||
// return new B<T>(n.Item1, n.Item2, n.Item3);
|
||
// }
|
||
// public static implicit operator B<T>((object source, string, BindingMode, Func<object, object>) n)
|
||
// {
|
||
// return new B<T>(n.Item1, n.Item2, n.Item3, n.Item4);
|
||
// }
|
||
|
||
// //public static B<T> operator !(string property)
|
||
// //{
|
||
// // return new B<T>(property, CPF.BindingMode.OneWay);
|
||
// //}
|
||
//}
|
||
|
||
//public interface IB
|
||
//{
|
||
|
||
//}
|
||
}
|
||
|
||
//#if NETSTANDARD2_0||NET40
|
||
//namespace System.Runtime.CompilerServices
|
||
//{
|
||
// //
|
||
// // 摘要:
|
||
// // Allows capturing of the expressions passed to a method.
|
||
// [AttributeUsage(AttributeTargets.Parameter, AllowMultiple = false, Inherited = false)]
|
||
// public sealed class CallerArgumentExpressionAttribute : Attribute
|
||
// {
|
||
// //
|
||
// // 摘要:
|
||
// // Gets the target parameter name of the CallerArgumentExpression.
|
||
// //
|
||
// // 返回结果:
|
||
// // The name of the targeted parameter of the CallerArgumentExpression.
|
||
// public string ParameterName
|
||
// {
|
||
// get
|
||
// {
|
||
// throw null;
|
||
// }
|
||
// }
|
||
|
||
// //
|
||
// // 摘要:
|
||
// // Initializes a new instance of the System.Runtime.CompilerServices.CallerArgumentExpressionAttribute
|
||
// // class.
|
||
// //
|
||
// // 参数:
|
||
// // parameterName:
|
||
// // The name of the targeted parameter.
|
||
// public CallerArgumentExpressionAttribute(string parameterName)
|
||
// {
|
||
// }
|
||
// }
|
||
//}
|
||
//#endif |