126 lines
3.7 KiB
C#
126 lines
3.7 KiB
C#
using System;
|
||
using System.Collections.Generic;
|
||
using System.Web;
|
||
using System.Web.UI;
|
||
using System.Web.UI.WebControls;
|
||
using System.Data;
|
||
using System.Text;
|
||
using Newtonsoft.Json;
|
||
using Newtonsoft.Json.Linq;
|
||
|
||
namespace FineUI.Examples.grid
|
||
{
|
||
public partial class grid_paging_selection : PageBase
|
||
{
|
||
protected void Page_Load(object sender, EventArgs e)
|
||
{
|
||
if (!IsPostBack)
|
||
{
|
||
BindGrid();
|
||
}
|
||
}
|
||
|
||
#region LoadData
|
||
|
||
private void BindGrid()
|
||
{
|
||
DataTable table = DataSourceUtil.GetDataTable2();
|
||
|
||
Grid1.DataSource = table;
|
||
Grid1.DataBind();
|
||
}
|
||
|
||
#endregion
|
||
|
||
#region Events
|
||
|
||
protected void Button1_Click(object sender, EventArgs e)
|
||
{
|
||
SyncSelectedRowIDArrayToHiddenField();
|
||
|
||
labResult.Text = "选中行的ID列表为：" + hfSelectedIDS.Text.Trim();
|
||
}
|
||
|
||
|
||
protected void Grid1_PageIndexChange(object sender, GridPageEventArgs e)
|
||
{
|
||
SyncSelectedRowIDArrayToHiddenField(e.OldPageIndex);
|
||
|
||
UpdateSelectedRowIDArray(e.NewPageIndex);
|
||
}
|
||
|
||
private List<string> GetSelectedRowIDArrayFromHiddenField()
|
||
{
|
||
JArray idsArray = new JArray();
|
||
|
||
string currentIDS = hfSelectedIDS.Text.Trim();
|
||
if (!String.IsNullOrEmpty(currentIDS))
|
||
{
|
||
idsArray = JArray.Parse(currentIDS);
|
||
}
|
||
else
|
||
{
|
||
idsArray = new JArray();
|
||
}
|
||
return new List<string>(idsArray.ToObject<string[]>());
|
||
}
|
||
|
||
private void SyncSelectedRowIDArrayToHiddenField()
|
||
{
|
||
SyncSelectedRowIDArrayToHiddenField(Grid1.PageIndex);
|
||
}
|
||
|
||
private void SyncSelectedRowIDArrayToHiddenField(int pageIndex)
|
||
{
|
||
List<string> ids = GetSelectedRowIDArrayFromHiddenField();
|
||
|
||
List<string> selectedRowIDs = new List<string>(Grid1.SelectedRowIDArray);
|
||
|
||
// 当前页的开始序号和结束序号
|
||
int startPageIndex = pageIndex * Grid1.PageSize;
|
||
int endPageIndex = Math.Min(startPageIndex + Grid1.PageSize, Grid1.RecordCount) - 1;
|
||
for (int i = startPageIndex; i <= endPageIndex; i++)
|
||
{
|
||
string rowID = Grid1.Rows[i].RowID;
|
||
if (selectedRowIDs.Contains(rowID))
|
||
{
|
||
if (!ids.Contains(rowID))
|
||
{
|
||
ids.Add(rowID);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (ids.Contains(rowID))
|
||
{
|
||
ids.Remove(rowID);
|
||
}
|
||
}
|
||
}
|
||
|
||
hfSelectedIDS.Text = new JArray(ids).ToString(Formatting.None);
|
||
}
|
||
|
||
private void UpdateSelectedRowIDArray(int pageIndex)
|
||
{
|
||
List<string> ids = GetSelectedRowIDArrayFromHiddenField();
|
||
|
||
List<string> selectedRowIDs = new List<string>();
|
||
// 当前页的开始序号和结束序号
|
||
int startPageIndex = pageIndex * Grid1.PageSize;
|
||
int endPageIndex = Math.Min(startPageIndex + Grid1.PageSize, Grid1.RecordCount) - 1;
|
||
for (int i = startPageIndex; i <= endPageIndex; i++)
|
||
{
|
||
string rowID = Grid1.Rows[i].RowID;
|
||
if (ids.Contains(rowID))
|
||
{
|
||
selectedRowIDs.Add(rowID);
|
||
}
|
||
}
|
||
|
||
Grid1.SelectedRowIDArray = selectedRowIDs.ToArray();
|
||
}
|
||
#endregion
|
||
}
|
||
}
|