Verifies that the specified object is nulla null reference (Nothing in Visual Basic). The assertion fails if it is not nulla null reference (Nothing in Visual Basic).
Namespace:  Microsoft.VisualStudio.TestTools.UnitTesting
Assembly:  Microsoft.VisualStudio.QualityTools.UnitTestFramework (in Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll)
Syntax
'Declaration
Public Shared Sub IsNull ( _
    value As Object _
)
public static void IsNull(
    Object value
)
public:
static void IsNull(
    Object^ value
)
static member IsNull : 
        value:Object -> unit
public static function IsNull(
    value : Object
)
Parameters
- value 
 Type: Object- The object to verify is nulla null reference (Nothing in Visual Basic). 
Exceptions
| Exception | Condition | 
|---|---|
| AssertFailedException | value is not nulla null reference (Nothing in Visual Basic). | 
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.
See Also
Reference
Microsoft.VisualStudio.TestTools.UnitTesting Namespace