Better way to find control in ASP.NET

Question

I have a complex asp.net form,having even 50 to 60 fields in one form like there is Multiview, inside MultiView I have a GridView, and inside GridV

Answer 1

All the highlighted solutions are using recursion (which is performance costly). Here is cleaner way without recursion:

public T GetControlByType(Control root, Func predicate = null) where T : Control 
{
    if (root == null) {
        throw new ArgumentNullException("root");
    }

    var stack = new Stack(new Control[] { root });

    while (stack.Count > 0) {
        var control = stack.Pop();
        T match = control as T;

        if (match != null && (predicate == null || predicate(match))) {
            return match;
        }

        foreach (Control childControl in control.Controls) {
           stack.Push(childControl);
        }
    }

    return default(T);
}