[c# winform] devexpress treeList right-click menu adds button

[c# winform] devexpress treeList right-click menu adds button

This article provides two methods that do not require manual addition of edit controls.

Method 1: Create a new right-click menu and add the “Execute Selection” button, and suppress the TreeList’s own menu
Result display:

Code:

private void Form1_Load(object sender, EventArgs e  )
 {
   CreateBarButtonItem();
 }

 private void  span> CreateBarButtonItem() {

   // Create a right button  Menu
   ContextMenuStrip contextMenuStrip = new ContextMenuStrip();
   // Add"  Execute Select menu item
   ToolStripMenuItem execSelectedItem = new ToolStripMenuItem("Execute selection");
   execSelectedItem.Click += ExecSelectedItem_Click; ;
   contextMenuStrip.Items.Add(execSelectedItem);
   // Associated right-click  Menu and TreeList control
   treeList1.PopupMenuShowing += TreeList1_PopupMenuShowing;
 }

  private void  span> TreeList1_PopupMenuShowing(object sender, PopupMenuShowingEventArgs  e)
  {
      // Disable auto  With right-click menu
      e.Allow = false;
  }

 private void  span> ExecSelectedItem_Click(object sender, EventArgs  e)
 {
   //Process "  Execute selection" event logic
 } 

Method 2: Add the “Execute Selection” button to the TreeList’s own menu

Result display:

Right-click on an empty node

Right-click the node and retain the built-in menu function

Right-click the column title and retain the built-in menu function‍

Code:

private void Form1_Load(object sender, EventArgs e  )
 {
   treeList1.PopupMenuShowing += TreeList1_PopupMenuShowing;//Customized right-click display menu
 }

 private void  span> TreeList1_PopupMenuShowing(object sender, PopupMenuShowingEventArgs  e)
 {
   // Get the right button  Menu
   if (e.Menu is  span>TreeListMenu menu)
   {
     // Added from  Define button
     DXMenuItem execSelectedItem = new DXMenuItem("Execute selection");
     execSelectedItem.Click += ExecSelectedItem_Click;
     // Will be  Define the button to be inserted at the end of the menu
  menu.Items.Add(execSelectedItem);
   }
 }

 private void  span> ExecSelectedItem_Click(object sender, EventArgs  e)
 {
   //Process "  Execute selection" event logic
 }