How to set a null value to a value type?
A value type, by definition, can not be null : it necessarily a value.
However, there is a generic type Nullable
?View Code CSHARP
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// integer not nullable
int monInt1 = 42 ;
// integer nullable
nullable < int > monInt2 = null ;
// integer nullable, scoring short
int? monInt3 = null ;
// Conversion implicit in int to nullable <int>
monInt2 = monInt1 ;
// Copy of an int to a Nullable <int>
if (monInt2.HasValue)
{
// No implicit conversion from int to nullable <int>, use the Value property
monInt1 = monInt2.Value;
} |
Please indicate the source reference, the original address:
www.mydeveloperblog.com/dotnet/c-sharp/how-to-set-a-null-value-to-a-value-type/
2011-12-05 by liuyunsx | Categories: C# | Tags: c#, dotnet, null, type |
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