(Winform) DataGrid中自定义boolColumn列,在列标题位置实现全选.
接上篇随笔"在Winform的DataGrid添加CheckBox列" http://snowlove67.cnblogs.com/archive/2005/11/23/282737.html
前几天一个朋友和我讨论,如何实现在行标题添加CheckBox列,实现全选功能,想了想这个应该是很常见的功能,
,不过没有作过,找不到合适的属性来设置,试着重写一个BoolColumn组件,但是没有成功,在设置Header上面的CheckBox位置的时候总是没有合适的途径来作。
实在没有办法了,只好偷了个懒,在DataGrid上面加入一个CheckBox,可以基本实现功能,不过外观不是很好看,可以根据需要再进行调整。而且在设置CheckBox位置的时候遇到了重写组件相同的问题,无法确定Header 的位置。只有在填充数据之后再实现这个添加列标题的功能,没有数据,HeaderText仍然显示初始的设定,而不是CheckBox。
基本的实现如下:(权作抛砖引玉,希望各位朋友看到了有好的方法多多指点,在此谢过...)
1.设置CheckBox作为BoolColumn列标题的代码.
2.为CheckBox列标题添加事件,以实现全选行..
调用的时候只要在填充数据之后执行此方法即可:
3.调用例子
这种实现很牵强,总感觉很不妥,希望各位看到的朋友,不吝笔墨留言指点赐教,多谢。
前几天一个朋友和我讨论,如何实现在行标题添加CheckBox列,实现全选功能,想了想这个应该是很常见的功能,
![](https://www.cnblogs.com/Emoticons/QQ/11.gif)
实在没有办法了,只好偷了个懒,在DataGrid上面加入一个CheckBox,可以基本实现功能,不过外观不是很好看,可以根据需要再进行调整。而且在设置CheckBox位置的时候遇到了重写组件相同的问题,无法确定Header 的位置。只有在填充数据之后再实现这个添加列标题的功能,没有数据,HeaderText仍然显示初始的设定,而不是CheckBox。
基本的实现如下:(权作抛砖引玉,希望各位朋友看到了有好的方法多多指点,在此谢过...)
1.设置CheckBox作为BoolColumn列标题的代码.
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// CheckBox which is defined as boolColumn header
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private CheckBox chkSelectAll = null;
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/// <summary>
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/// Add a checkBox into dataGrid as dataColumn's header,for checking all rows.
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/// </summary>
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private void AddHeaderForSelectAll()
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{
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if (dtTemp == null || dtTemp.Rows.Count <= 0)
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{
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return ;
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}
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// if checkBox object exists, return
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if (chkSelectAll != null)
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{
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return ;
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}
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chkSelectAll = new CheckBox();
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chkSelectAll.Location = new Point(dataGrid1.GetCellBounds(0, 0).X , dataGrid1.GetCellBounds(0, 0).Y - dataGrid1.PreferredRowHeight);
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chkSelectAll.Size = new Size(dcSelected.Width - 4 , dataGrid1.PreferredRowHeight - 2);
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chkSelectAll.Text = "Select all";
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chkSelectAll.Visible = true;
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chkSelectAll.BackColor = SystemColors.Control;
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chkSelectAll.CheckedChanged += new EventHandler(chkSelectAll_CheckedChanged);
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this.dataGrid1.Controls.Add(chkSelectAll);
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}
***这里需要把dcSelected修改为全局变量,不然在AddHeaderForSelectAll方法里面是无法访问的.![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedBlockEnd.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedBlockEnd.gif)
2.为CheckBox列标题添加事件,以实现全选行..
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/// <summary>
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///
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void chkSelectAll_CheckedChanged(object sender, EventArgs e)
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{
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if (chkSelectAll.Checked)
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{
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SelectAllRows(true);
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}
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else
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{
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SelectAllRows(false);
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}
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}
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/// <summary>
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/// Check all rows or not
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/// </summary>
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/// <param name="bSelect"></param>
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private void SelectAllRows(bool bSelect)
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{
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if (this.dtTemp != null && this.dtTemp.Rows.Count > 0)
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{
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foreach(DataRow dr in dtTemp.Rows)
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{
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dr["IsSelected"] = bSelect;
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}
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}
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dtTemp.AcceptChanges();
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}
![](/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedBlockEnd.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/ExpandedBlockEnd.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedBlockEnd.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedBlockEnd.gif)
调用的时候只要在填充数据之后执行此方法即可:
3.调用例子
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this.dataGrid1.DataSource = dtTemp.DefaultView;
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AddHeaderForSelectAll();
![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
这种实现很牵强,总感觉很不妥,希望各位看到的朋友,不吝笔墨留言指点赐教,多谢。