我在tabControl内创建了一些自定义控件(按钮),该标签控件在运行时通过在其中拖动文件来包含FLP。当我右键单击按钮并从上下文菜单中选择“删除”时,我想删除按钮。我的问题是如何知道我右键单击要删除的按钮?
我如何创建按钮:
public void tabControl1_DragDrop(object sender, DragEventArgs e)
{
string[] fileList = e.Data.GetData(DataFormats.FileDrop) as string[];
foreach (string s in fileList)
{
var button = new Button();
CustomControl custom_btn = new CustomControl(button, new Label { Text = file_name, BackColor = Color.Red });
button.Tag = path_app;
FlowLayoutPanel selectedFLP = (FlowLayoutPanel)tabControl1.SelectedTab.Controls[0];
selectedFLP.Controls.Add(custom_btn);
ContextMenu cm2 = new ContextMenu();
cm2.MenuItems.Add("Remove", new EventHandler(rmv_btn_click));
custom_btn.ContextMenu = cm2;
}
}
我尝试删除按钮,但没有删除我选择的按钮。
private void rmv_btn_click(object sender, System.EventArgs tab)
{
//flp_panel.Controls.Remove(sender as Button); - not working because the sender is actually the button "remove" from the context menu..
foreach (Control X in flp_panel.Controls)
{
flp_panel.Controls.Remove(X);
}
}
您可以先声明一个方法:
private EventHandler handlerGetter( Button button )
{
return ( object sender, EventArgs e ) =>
{
flp_panel.Controls.Remove(button);
};
}
然后将现有代码修改为:
cm2.MenuItems.Add("Remove", handlerGetter(custom_btn));
完毕。
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