Question

我在选项卡控件中创建一个自定义控件，通过拖动所选选项卡上的文件，每个选项卡上都包含一个flowLayoutPanel。我有一个上下文菜单来重命名和删除标签页，但我也希望能够删除当我右键单击它并选择“删除”时创建的按钮...我找不到删除所选按钮的方法。

这就是我必须创建的按钮：

  public void Form1_DragDrop(object sender, DragEventArgs e)
    {
        string[] fileList = e.Data.GetData(DataFormats.FileDrop) as string[];

        foreach (string s in fileList)
        {
            var button = new Button();
            path_app = String.Format("{0}", s);
            string filename = path_app;
            file_name = Path.GetFileName(path_app);

          Icon icon = System.Drawing.Icon.ExtractAssociatedIcon(filename);
          Bitmap bmp = icon.ToBitmap();
          CustomControl custom_btn = new CustomControl(button, new Label { Text = file_name });
          button.Tag = path_app;
          button.BackgroundImage = bmp;
          button.BackgroundImageLayout = ImageLayout.Stretch;
          FlowLayoutPanel selectedFLP = (FlowLayoutPanel)tabControl1.SelectedTab.Controls[0];
          selectedFLP.Controls.Add(custom_btn);
          button.Click += new EventHandler(button_Click);

            ContextMenu cm2 = new ContextMenu();
            cm2.MenuItems.Add("Remove", new EventHandler(rmv_btn_click));
            custom_btn.ContextMenu = cm2;
        }
    }

    private void rmv_btn_click(object sender, System.EventArgs e)
    {
        foreach (Control X in fl_panel.Controls)
        {
            fl_panel.Controls.Remove(X);
        }
    }

如何在rmv_btn_click事件中获取我右键单击它作为发件人的按钮，以了解要删除的按钮？

Answer 1

如果我理解你的意思，你需要使用这样的东西。

private void rmv_btn_click(object sender, System.EventArgs e)
{
  fl_panel.Controls.Remove(sender as Button);
}

Answer 2

private void rmv_btn_click（object sender，System.EventArgs e） {

        Button btn = new Button();
        Label lbl = new Label();
        CustomControl cst_btn = new CustomControl(btn, lbl);
        cst_btn = sender as CustomControl;
        DialogResult dialogResult = MessageBox.Show("Are you sure that you want to remove this object?", "Remove object", MessageBoxButtons.YesNo);
        if (dialogResult == DialogResult.Yes)
        {
            cst_btn.Dispose();
        }
        else if (dialogResult == DialogResult.No)
        {
            //do nothing
        }


    }

    public EventHandler handlerGetter(CustomControl button)
    {
        return (object sender, EventArgs e) =>
        {
            rmv_btn_click(button, e);
        };
    }

上下文菜单删除所选按钮

2 个答案: