Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/class/System.Web.DynamicData/Test/Common/MiscExtensions.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Web;
+using System.Web.UI;
+
+namespace MonoTests.Common
+{
+	public static class MiscExtensions
+	{
+		public static TChild FindChild <TChild> (this Control parent) where TChild: class
+		{
+			return FindChild <TChild> (parent, null);
+		}
+
+		public static TChild FindChild<TChild> (this Control parent, string id) where TChild: class
+		{
+			if (parent == null)
+				return null;
+			
+			foreach (Control child in parent.Controls) {
+				if (child == null)
+					continue;
+
+				if (typeof (TChild).IsAssignableFrom (child.GetType ())) {
+					if (String.IsNullOrEmpty (id))
+						return child as TChild;
+					if (String.Compare (child.ID, id, StringComparison.OrdinalIgnoreCase) == 0)
+						return child as TChild;
+				}
+
+				TChild ret = child.FindChild<TChild> (id);
+				if (ret != null)
+					return ret;
+			}
+
+			return null;
+		}
+	}
+}