TreeView event ContextMenuOpening not executing with ContextMenuStrip

[Andrea]

Hello, if execute the attached code, the ContextMenuOpening event is not raised with ContextMenuStrip

how can I edit the contextmenu depending on the node? Can't use ContextMenu nor RadContextMenu for the purpose.

Maybe can I capture the mouse position before the contextmenu gets opened and find the tree node in some ways?

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApplication4
{
    public class Form1 : Form
    {
        private IContainer components;
        private ContextMenuStrip contextMenuStrip1;
        private ToolStripMenuItem aToolStripMenuItem;
        private Telerik.WinControls.UI.RadTreeView radTreeView1;

        public Form1()
        {
            this.components = new System.ComponentModel.Container();
            this.radTreeView1 = new Telerik.WinControls.UI.RadTreeView();
            this.contextMenuStrip1 = new System.Windows.Forms.ContextMenuStrip(this.components);
            this.aToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();

            ((System.ComponentModel.ISupportInitialize) (this.radTreeView1)).BeginInit();
            this.contextMenuStrip1.SuspendLayout();
            this.SuspendLayout();

            this.radTreeView1.Location = new System.Drawing.Point(16, 12);
            this.radTreeView1.Size = new System.Drawing.Size(251, 152);
            this.radTreeView1.ContextMenuOpening += new Telerik.WinControls.UI.TreeViewContextMenuOpeningEventHandler(this.radTreeView1_ContextMenuOpening);

            this.contextMenuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.aToolStripMenuItem});
            this.contextMenuStrip1.Name = "contextMenuStrip1";

            this.aToolStripMenuItem.Name = "aToolStripMenuItem";
            this.aToolStripMenuItem.Text = "A";
            this.aToolStripMenuItem.Click += new System.EventHandler(this.aToolStripMenuItem_Click);
            //
            // Form1
            //
            this.ClientSize = new System.Drawing.Size(284, 261);
            this.Controls.Add(this.radTreeView1);
            ((System.ComponentModel.ISupportInitialize) (this.radTreeView1)).EndInit();
            this.contextMenuStrip1.ResumeLayout(false);
            this.ResumeLayout(false);

            radTreeView1.ContextMenuStrip = this.contextMenuStrip1;
        }


        string context = "radTreeView1_ContextMenuOpening WAS NOT executed";
        private void radTreeView1_ContextMenuOpening(object sender, Telerik.WinControls.UI.TreeViewContextMenuOpeningEventArgs e)
        {
            context = "radTreeView1_ContextMenuOpening WAS executed";
        }

        private void aToolStripMenuItem_Click(object sender, EventArgs e)
        {
            MessageBox.Show(this, context);
        }
    }
}

[Hristo]

Hi Andrea,

Thank you for writing.

Since you are using the System.Windows.Forms.ContextMenuStrip class you need to handle its Opening event. Please see my code snippet below: 

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();

        this.radTreeView1.ContextMenuStrip = this.contextMenuStrip1;
        this.radTreeView1.ContextMenuStrip.Opening += ContextMenuStrip_Opening;
    }

    private void ContextMenuStrip_Opening(object sender, CancelEventArgs e)
    {
        //...
    }
}

The ContextMenuOpening event is defined in the RadTreeView class and if want to handle it you need to use a RadContextMenu. Please check the following documentation article: http://docs.telerik.com/devtools/winforms/treeview/context-menus/default-context-menu.

I hope this helps. Should you have further questions please do not hesitate to write back.

Regards,
Hristo Merdjanov
Telerik by Progress

[Andrea]

Thanks a lot

For future memory the complete snippet:

RadTreeNode contextNode = null;

 

private void ContextMenuStrip1_Opening(object sender, CancelEventArgs e)

{           

   Point loc = Cursor.Position;           

   RadTreeView t = ((ContextMenuStrip)sender).SourceControl as RadTreeView);

   contextNode = t?.GetNodeAt(t.PointToClient(loc));

 

   //customize context menu, enable disable items etc ..


}

 

Best Regards

Andrea

[Hristo]

Hi Andrea,

Thank you for sharing your code with the community. I am glad that it is working well in your project.

Please let me know if you need further assistance.

Regards,
Hristo Merdjanov
Telerik by Progress

[Christ]

Thank you both, this was what I was searching for today...

 

/Christ