Proposed fix for microsoft#2780. (microsoft#2786)

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luis12614 · Oct 20, 2017 · 247a411 · 247a411
1 parent 135224c
commit 247a411
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/CSharp/Samples/AnnotatedSandwichBot/AnnotatedSandwich.cs b/CSharp/Samples/AnnotatedSandwichBot/AnnotatedSandwich.cs
@@ -117,7 +117,7 @@ public static IForm<SandwichOrder> BuildForm()
                         .Field(nameof(Toppings),
                             validate: async (state, value) =>
                             {
-                                var values = ((List<object>)value).OfType<ToppingOptions>();
+                                var values = ((List<object>)value)?.OfType<ToppingOptions>();
                                 var result = new ValidateResult { IsValid = true, Value = values };
                                 if (values != null && values.Contains(ToppingOptions.Everything))
                                 {
@@ -288,7 +288,7 @@ public static IForm<SandwichOrder> BuildLocalizedForm()
                         .Field(nameof(Toppings),
                             validate: async (state, value) =>
                             {
-                                var values = ((List<object>)value).OfType<ToppingOptions>();
+                                var values = ((List<object>)value)?.OfType<ToppingOptions>();
                                 var result = new ValidateResult { IsValid = true, Value = values };
                                 if (values != null && values.Contains(ToppingOptions.Everything))
                                 {