Question

how to give same property to all textboxes present in the same form.

      foreach (var textbox in this.Controls.OfType<TextBox>())
        {
            textbox.ContextMenu = new ContextMenu();
        }

The above code works only if the textboxes are not in nested format.

In my project I have multiple tabpages in tabcontrol. so i cant implement the above code. but i can implement the below code:

      foreach (TextBox textbox in this.Controls.OfType<TabControl>().SelectMany(tc => tc.Controls.OfType<TabPage>().SelectMany(page => page.Controls.OfType<TextBox>())))
        {
            textbox.ContextMenu = new ContextMenu();
        }
        foreach (var textbox in this.tabCarInsurance.Controls.OfType<TextBox>())
        {
            textbox.ContextMenu = new ContextMenu();
        }
        foreach (var textbox in this.tabHomeLoans.Controls.OfType<TextBox>())
        {
            textbox.ContextMenu = new ContextMenu();
        }
        foreach (var textbox in this.tabRetirement.Controls.OfType<TextBox>())
        {
            textbox.ContextMenu = new ContextMenu();
        }

Here I am implementing for each tabControl. which still i dont like (because I have more tab pages to take care of). Is there anyway to reduce the above code.

I tried the below code: (not working)

       foreach (var textbox in this.Controls.OfType<TabControl>().OfType<TextBox>())
        {
            textbox.ContextMenu = new ContextMenu();
        }

I got the above code knowledge from my previous question.

Please Help

Thanks in Advance.

Answer 1

 private void SetProperty(Control ctr)
    {
        foreach(Control control in ctr.Controls)
        {
            if (control is TextBox)
            {
                control.ContextMenu = new ContextMenu();               
            }
            else
            {
                if (control.HasChildren)
                {
                    SetProperty(control);
                }                    
            }
        }
    }