context menu to delete selected button

Question

I create a custom control inside a tab control which contains a flowLayoutPanel on every tab by dragging files on the selected tab. I have a context menu to rename and delete tab pages, but i want also to be able to delete a button created when I right click on it and select "remove"... I cannot find a way to delete only the selected button..

This is what I have to create the buttons:

  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);
        }
    }

How do I get the button which I right click on it as sender in the rmv_btn_click event to know which one to delete?

score 0 · Answer 1 · answered Apr 02 '14 at 08:42

0

If I understand what you mean, You need to use something like this.

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

answered Apr 02 '14 at 08:42

Gleb

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I think in this way the sender is the button "Remove" from the context menu.. I need to know which button to delete when I right click on it and select "Remove" from the context menu.. – alex Alex Apr 02 '14 at 09:04
You can try to use TabIndex property, just put it to the EventArgs and use RemoveAt() – Gleb Apr 02 '14 at 09:15
But how the TabIndex is going to help me to know on which button I right click to remove? Can you give me more details about how to use it? – alex Alex Apr 03 '14 at 14:07

score 0 · Accepted Answer · answered May 06 '14 at 08:17

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);
        };
    }

context menu to delete selected button

2 Answers2