Bug in RadioButton type checking fixed

unknow321 · Jul 23, 2019 · e7342a5 · e7342a5
1 parent 4cb6ffd
commit e7342a5
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/DotVVM.Framework/Controls/RadioButton.cs b/src/DotVVM.Framework/Controls/RadioButton.cs
@@ -109,7 +109,7 @@ protected virtual void RenderCheckedAttribute(IHtmlWriter writer)
         public static IEnumerable<ControlUsageError> ValidateUsage(ResolvedControl control)
         {
             var itemType = control.GetValue(CheckedItemProperty)?.GetResultType();
-            var nonNullItemType = itemType.IsNullable()
+            var nonNullItemType = itemType?.IsNullable() == true
                 ? itemType.GetGenericArguments()[0]
                 : itemType;
             var valueType = control.GetValue(CheckedValueProperty)?.GetResultType();