Loop through all controls on asp.net webpage

Question

I need to loop through all the controls in my asp.net webpage and do something to the control. In one instance I\'m making a giant string out of the page and emailing it to

Answer 1

I rather like David Finleys linq approach to FindControl http://weblogs.asp.net/dfindley/archive/2007/06/29/linq-the-uber-findcontrol.aspx

public static class PageExtensions
{
    public static IEnumerable All(this ControlCollection controls)
    {
        foreach (Control control in controls)
        {
            foreach (Control grandChild in control.Controls.All())
                yield return grandChild;

            yield return control;
        }
    }
}

Usage:

// get the first empty textbox
TextBox firstEmpty = accountDetails.Controls
    .All()
    .OfType()
    .Where(tb => tb.Text.Trim().Length == 0)
    .FirstOrDefault();

// and focus it
if (firstEmpty != null)
    firstEmpty.Focus();