+#if NET_2_0
+ if (Page != null)
+ Page.ClientScript.RegisterForEventValidation (this.UniqueID);
+
+ if (CausesValidation && Page != null && Page.AreValidatorsUplevel (ValidationGroup)) {
+ ClientScriptManager csm = Page.ClientScript;
+ Attributes ["onclick"] += csm.GetClientValidationEvent (ValidationGroup);
+ }
+#else