右键单击TreeNode以选择不起作用

Question

I am trying to fix a problem where if a user right clicks on a selection, it will not select/highlight it, and if, for example. "delete", is selected, it deletes the previous selection that was clicked on. I have read many posts about using the mouse_down event, but nothing I have tried has seemed to work for me. Here is the current code:

private void treelocations_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
    if (e.Button == System.Windows.Forms.MouseButtons.Right)
    {
        Point pos = new Point();
        pos.X = e.X;
        pos.Y = e.Y;
        mnulocation.Show(this.treelocations, pos);
    }
}

I simply would like to be able to right click on any selection in the list and have it highlight/select that record.

Answer 1

You will need to change the selected node upon firing the mouse down event.

Take a look at: Selected Node Property

Or your could take a look at: NodeMouseClick event.

    private void treeView1_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
    {
        if (e.Button == System.Windows.Forms.MouseButtons.Right)
        {
            treeView1.Nodes.Remove(e.Node);
        }
    }

Answer 2

You can add in the other case statement as needed but this should help you get what you need

 private void treelocations_MouseClick(object sender, MouseEventArgs e)
 {
      switch(e.Button)
      {
          case MouseButtons.Right:
          {
              Point pos = new Point();
              pos.X = e.X;
              pos.Y = e.Y;
              treeView1.Focus();
              MessageBox.Show(treelocations.SelectedNode.Text);
              break;
           }
      }
 }