santosh singh santosh singh - 1 month ago 5
ASP.NET (C#) Question

Better way to find control in ASP.NET

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 GridView I have several
CheckBoxes
.

Currently I am using chaining of the
FindControl()
method and retrieving the child ID.

Now, my question is that is there any other way/solution to find the nested control in ASP.NET.

Answer

If you're looking for a specific type of control you could use a recursive loop like this one - http://weblogs.asp.net/eporter/archive/2007/02/24/asp-net-findcontrol-recursive-with-generics.aspx

Here's an example I made that returns all controls of the given type

/// <summary>
/// Finds all controls of type T stores them in FoundControls
/// </summary>
/// <typeparam name="T"></typeparam>
private class ControlFinder<T> where T : Control 
{
    private readonly List<T> _foundControls = new List<T>();
    public IEnumerable<T> FoundControls
    {
        get { return _foundControls; }
    }    

    public void FindChildControlsRecursive(Control control)
    {
        foreach (Control childControl in control.Controls)
        {
            if (childControl.GetType() == typeof(T))
            {
                _foundControls.Add((T)childControl);
            }
            else
            {
                FindChildControlsRecursive(childControl);
            }
        }
    }
}