give same property to all textbox controls

Question

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

      foreach (var textbox in this.Controls.OfType())
        {
            t         


        

Answer 1

Try:

private void CtxMenu(Control parent)
{
    foreach (Control child in parent.Controls)
    {
        if (child is TextBox)
        {
            (child as TextBox).ContextMenu = new ContextMenu(); 
        }
}

Answer 2

 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);
                }                    
            }
        }
    }

Answer 3

How about an extension method to do it, called from your tabcontrol container...

public static class ControlExtensions
{
    public static void SetContextMenuOnChildTextBoxes(this Control control)
    {
        if (control is TextBox)
        {
            control.ContextMenu = new ContextMenu();
        }
        if (control.Controls != null)
        {
            foreach (Control controlChild in control.Controls)
            {
                controlChild.SetContextMenuOnChildTextBoxes();
            }
        }
    }
}

This could be put in a common area of code so that it could be called from any parents that wanted this functionality.

Answer 4

Just use the recursion to go through all controls subcollections:

void SetControl(ContextMenu menu, Control control)
{
    if (control is TextBox)
        control.ContextMenu = menu;
    else
    {
        foreach (Control c in control.Controls)
            SetControl(menu, c);
    }
}

It will find all the textboxes and set one and the same context menu to all of them.

You mal call it,say, from form's OnLoad event handler. While it's assumed that you have yourContextMenu defined for the form.

    private void Form1_Load(object sender, EventArgs e)
    {
        SetControl(yourContextMenu, this);
    }