Question

在我的程序中，我通过右键单击动态生成标签 - ＆gt;表格中的新内容：

private Point MouseDownLocation;
private List<Label> labelList=new List<Label>();

private void mainContextMenu_Opening(object sender, CancelEventArgs e)
{
  MouseDownLocation = PointToClient(MousePosition);
}

private void valueToolStripMenuItem_Click(object sender, EventArgs e)
{
  Label label = new Label();
  label.Location = MouseDownLocation;
  label.AutoSize = true;
  label.ContextMenuStrip = valueContextMenu;
  label.Text = "test";
  this.Controls.Add(label);
  labelList.Add(label);
}

接下来，我将valueContextMenu与Button Delete一起使用，我希望能够右键单击这样生成的标签，然后删除。

private void deleteToolStripMenuItem_Click(object sender, EventArgs e)
{
}

问题是，在这个函数（被调用）中，没有办法检索调用菜单的标签，因为sender是contextmenu ..

Answer 1

尝试检查ContextMenuStrip的SourceControl属性：

private void deleteToolStripMenuItem_Click(object sender, EventArgs e) {
  Control c = ((ContextMenuStrip)((ToolStripMenuItem)sender).Owner).SourceControl;
  if (c != null) {
    // do something...
  }
}

找出调用contextmenu的以编程方式生成的对象

1 个答案: