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SharePoint: How to find all controls of a certain type

October 12th, 2011 Admin Leave a comment Go to comments

    A small, but useful method to find recursively all controls of a certain type:

public static List<T> FindControlRecursiveByType<T>(Control root) where T : Control
{
    List<T> res = new List<T>();

    if (root != null)
    {
        Stack<Control> tmpStack = new Stack<Control>();
        tmpStack.Push(root);

        while (tmpStack.Count > 0)
        {
            Control ctrl = tmpStack.Pop();
            if (ctrl is T)
                res.Add(ctrl as T);

            foreach (Control childCtrl in ctrl.Controls)
                tmpStack.Push(childCtrl);
        }
    }

    return res;
}

The sample usage is below:

// return all save buttons on the page
List<SaveButton> saveButtons = FindControlRecursiveByType<SaveButton>(Page);
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