no fun for ya all (#2835)

src/Discord.Net.Core/Entities/Interactions/MessageComponents/ComponentBuilder.cs

@@ -1363,6 +1363,16 @@ namespace Discord
         /// <returns>The newly built <see cref="SelectMenuOption"/>.</returns>
         public SelectMenuOption Build()
         {
+            if (string.IsNullOrWhiteSpace(Label))
+                throw new ArgumentNullException(nameof(Label), "Option must have a label.");
+
+            Preconditions.AtMost(Label.Length, MaxSelectLabelLength, nameof(Label), $"Label length must be less or equal to {MaxSelectLabelLength}.");
+
+            if (string.IsNullOrWhiteSpace(Value))
+                throw new ArgumentNullException(nameof(Value), "Option must have a value.");
+
+            Preconditions.AtMost(Value.Length, MaxSelectValueLength, nameof(Value), $"Value length must be less or equal to {MaxSelectValueLength}.");
+
             return new SelectMenuOption(Label, Value, Description, Emote, IsDefault);
         }
     }