Identifying a Nullable Type Programmatically in Visual Studio

by demtron on Tuesday, December 16, 2008 05:34 PM

I have occasionally found a need to identify whether the type of a given variable is a nullable type so that I know whether I need to also use the HasValue and Value methods to obtain its contained value.  Here's a farily simple snippet of code to accomplish this.

VB.NET:
If type.IsGenericType AndAlso type.GetGenericTypeDefinition() = GetType(Nullable(Of )) Then
End If
C#:
if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>)) {}

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