* UICombobox: 更新了数据绑定相关代码
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Sunny
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8aeca1b7c3
commit
d291e4f96e
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@ -25,7 +25,6 @@ using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Design;
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using System.Windows.Forms;
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using static System.Windows.Forms.ComboBox;
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namespace Sunny.UI
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{
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@ -38,10 +37,10 @@ namespace Sunny.UI
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public UIComboBox()
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{
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InitializeComponent();
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box.SelectedIndexChanged += Box_SelectedIndexChanged;
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box.DataSourceChanged += Box_DataSourceChanged;
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box.DisplayMemberChanged += Box_DisplayMemberChanged;
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box.ValueMemberChanged += Box_ValueMemberChanged;
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ListBox.SelectedIndexChanged += Box_SelectedIndexChanged;
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ListBox.DataSourceChanged += Box_DataSourceChanged;
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ListBox.DisplayMemberChanged += Box_DisplayMemberChanged;
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ListBox.ValueMemberChanged += Box_ValueMemberChanged;
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DropDownWidth = 150;
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fullControlSelect = true;
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}
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@ -63,8 +62,7 @@ namespace Sunny.UI
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private void Box_SelectedIndexChanged(object sender, EventArgs e)
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{
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Text = box.GetItemText(box.SelectedItem);
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GetSelectedValue();
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Text = ListBox.GetItemText(ListBox.SelectedItem);
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SelectedValueChanged?.Invoke(this, e);
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SelectedIndexChanged?.Invoke(this, e);
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}
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@ -79,8 +77,6 @@ namespace Sunny.UI
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public event EventHandler SelectedValueChanged;
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public readonly ComboBox box = new ComboBox();
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protected override void ItemForm_ValueChanged(object sender, object value)
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{
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if (SelectedIndex != ListBox.SelectedIndex)
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@ -131,18 +127,6 @@ namespace Sunny.UI
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private void UIComboBox_ButtonClick(object sender, EventArgs e)
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{
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ListBox.Items.Clear();
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if (Items.Count == 0 || ItemForm.Visible)
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{
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return;
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}
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foreach (var data in Items)
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{
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ListBox.Items.Add(GetItemText(data));
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}
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ListBox.SelectedIndex = SelectedIndex;
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ItemForm.Show(this, new Size(DropDownWidth < Width ? Width : DropDownWidth, CalcItemFormHeight()));
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}
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@ -154,60 +138,10 @@ namespace Sunny.UI
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ListBox.SetStyleColor(uiColor);
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}
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private object dataSource;
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[DefaultValue(null), RefreshProperties(RefreshProperties.Repaint), AttributeProvider(typeof(IListSource))]
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[Description("数据源"), Category("SunnyUI")]
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public object DataSource
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{
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get => dataSource;
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set
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{
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SetDataConnection(value, new BindingMemberInfo(DisplayMember));
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dataSource = value;
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box.Items.Clear();
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if (dataManager != null)
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{
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foreach (var obj in dataManager.List)
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{
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box.Items.Add(obj);
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}
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}
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}
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}
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private bool inSetDataConnection;
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private CurrencyManager dataManager;
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private void SetDataConnection(object newDataSource, BindingMemberInfo newDisplayMember)
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{
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bool dataSourceChanged = dataSource != newDataSource;
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bool displayMemberChanged = !DisplayMember.Equals(newDisplayMember.BindingPath);
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if (inSetDataConnection)
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{
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return;
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}
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try
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{
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inSetDataConnection = true;
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if (dataSourceChanged || displayMemberChanged)
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{
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CurrencyManager newDataManager = null;
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if (newDataSource != null && newDataSource != Convert.DBNull)
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{
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newDataManager = (CurrencyManager)BindingContext[newDataSource, newDisplayMember.BindingPath];
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}
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dataManager = newDataManager;
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}
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}
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finally
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{
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inSetDataConnection = false;
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}
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get => ListBox.DataSource;
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set => ListBox.DataSource = value;
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}
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[DefaultValue(150)]
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@ -215,29 +149,26 @@ namespace Sunny.UI
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public int DropDownWidth { get; set; }
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
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[Editor("System.Windows.Forms.Design.ListControlStringCollectionEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(UITypeEditor))]
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[Localizable(true)]
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[Editor("System.Windows.Forms.Design.ListControlStringCollectionEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(UITypeEditor))]
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[MergableProperty(false)]
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[Description("下拉显示项"), Category("SunnyUI")]
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public ObjectCollection Items
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{
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get => box.Items;
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}
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[Description("列表项"), Category("SunnyUI")]
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public ListBox.ObjectCollection Items => ListBox.Items;
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[Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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[Description("选中索引"), Category("SunnyUI")]
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public int SelectedIndex
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{
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get => box.SelectedIndex;
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set => box.SelectedIndex = value;
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get => ListBox.SelectedIndex;
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set => ListBox.SelectedIndex = value;
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}
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[Browsable(false), Bindable(true), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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[Description("选中项"), Category("SunnyUI")]
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public object SelectedItem
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{
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get => box.SelectedItem;
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set => box.SelectedItem = value;
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get => ListBox.SelectedItem;
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set => ListBox.SelectedItem = value;
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}
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[Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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@ -268,12 +199,8 @@ namespace Sunny.UI
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[TypeConverter("System.Windows.Forms.Design.DataMemberFieldConverter, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
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public string DisplayMember
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{
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get => box.DisplayMember;
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set
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{
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SetDataConnection(dataSource, new BindingMemberInfo(value));
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box.DisplayMember = value;
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}
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get => ListBox.DisplayMember;
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set => ListBox.DisplayMember = value;
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}
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[Description("获取或设置指示显示值的方式的格式说明符字符。"), Category("SunnyUI")]
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@ -282,16 +209,16 @@ namespace Sunny.UI
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[MergableProperty(false)]
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public string FormatString
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{
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get => box.FormatString;
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set => box.FormatString = value;
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get => ListBox.FormatString;
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set => ListBox.FormatString = value;
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}
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[Description("获取或设置指示显示值是否可以进行格式化操作。"), Category("SunnyUI")]
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[DefaultValue(false)]
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public bool FormattingEnabled
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{
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get => box.FormattingEnabled;
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set => box.FormattingEnabled = value;
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get => ListBox.FormattingEnabled;
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set => ListBox.FormattingEnabled = value;
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}
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[Description("获取或设置要为此列表框实际值的属性。"), Category("SunnyUI")]
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@ -299,22 +226,8 @@ namespace Sunny.UI
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[Editor("System.Windows.Forms.Design.DataMemberFieldEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(UITypeEditor))]
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public string ValueMember
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{
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get => box.ValueMember;
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set => box.ValueMember = value;
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}
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private object selectedValue;
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private void GetSelectedValue()
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{
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if (SelectedIndex != -1 && dataManager != null)
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{
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selectedValue = FilterItemOnProperty(SelectedItem, ValueMember);
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}
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else
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{
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selectedValue = null;
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}
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get => ListBox.ValueMember;
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set => ListBox.ValueMember = value;
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}
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[
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@ -325,73 +238,13 @@ namespace Sunny.UI
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]
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public object SelectedValue
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{
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get
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{
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GetSelectedValue();
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return selectedValue;
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}
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set
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{
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selectedValue = value;
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if (value == null)
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{
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return;
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}
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if (dataManager != null)
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{
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int index = DataManagerFind(value);
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SelectedIndex = index;
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}
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}
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}
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private int DataManagerFind(object value)
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{
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if (dataManager == null) return -1;
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for (int i = 0; i < dataManager.List.Count; i++)
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{
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var item = dataManager.List[i];
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if (FilterItemOnProperty(item, ValueMember).Equals(value))
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{
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return i;
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}
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}
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return -1;
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}
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private object FilterItemOnProperty(object item, string field)
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{
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if (item != null && field.Length > 0)
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{
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try
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{
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// if we have a dataSource, then use that to display the string
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PropertyDescriptor descriptor;
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if (dataManager != null)
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descriptor = dataManager.GetItemProperties().Find(field, true);
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else
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descriptor = TypeDescriptor.GetProperties(item).Find(field, true);
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if (descriptor != null)
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{
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item = descriptor.GetValue(item);
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}
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}
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catch
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{
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return null;
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}
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}
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return item;
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get => ListBox.SelectedValue;
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set => ListBox.SelectedValue = value;
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}
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public string GetItemText(object item)
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{
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return box.GetItemText(item);
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return ListBox.GetItemText(item);
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}
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}
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}
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