How to disable context menu form OpenFileDialog，how to disable delete menu CommonOpenFileDialog.Or OpenFileDialog in c#

To disable the context menu in OpenFileDialog or CommonOpenFileDialog in C#, you can use the following approach:

1. Disable the context menu in OpenFileDialog: The OpenFileDialog class in C# does not provide a direct way to disable the context menu. However, you can achieve this by subclassing the OpenFileDialog class and overriding the WndProc method to handle the WM_CONTEXTMENU message. Here's an example:

using System;
using System.Windows.Forms;

public class CustomOpenFileDialog : OpenFileDialog
{
    protected override void WndProc(ref Message m)
    {
        const int WM_CONTEXTMENU = 0x007B;

        if (m.Msg == WM_CONTEXTMENU)
        {
            // Disable the context menu by not calling the base class implementation
            return;
        }

        base.WndProc(ref m);
    }
}

In your code, replace the usage of OpenFileDialog with CustomOpenFileDialog to disable the context menu.

1. Disable the delete menu in CommonOpenFileDialog: The CommonOpenFileDialog class is part of the Windows API Code Pack, which provides a managed wrapper around the native Windows Common File Dialogs. To disable the delete menu in CommonOpenFileDialog, you can set the AllowPropertyEditing property to false. Here's an example:

using Microsoft.WindowsAPICodePack.Dialogs;

CommonOpenFileDialog dialog = new CommonOpenFileDialog();
dialog.AllowPropertyEditing = false;

By setting AllowPropertyEditing to false, the delete menu option will be disabled in the CommonOpenFileDialog.

Please note that the above solutions are specific to disabling the context menu and delete menu in OpenFileDialog and CommonOpenFileDialog respectively. They do not cover other aspects of the mentioned technologies or concepts.