Gets a value that indicates whether the column contains non-existent or missing values.
Namespace: System.Extensions.DataAssembly: System.Extensions (in System.Extensions.dll) Version: 0.0.0.5 (0.0.0.5)
Syntax
C# |
---|
public static bool IsDBNull(
this IDataRecord reader,
string name
) |
Visual Basic |
---|
<ExtensionAttribute>
Public Shared Function IsDBNull (
reader As IDataRecord,
name As String
) As Boolean |
Visual C++ |
---|
public:
[ExtensionAttribute]
static bool IsDBNull(
IDataRecord^ reader,
String^ name
) |
F# |
---|
static member IsDBNull :
reader : IDataRecord *
name : string -> bool
|
Return Value
Type:
BooleanTrue if the specified column value is equivalent to
DBNull; otherwise false.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type
IDataRecord. When you use instance method syntax to call this method, omit the first parameter. For more information, see
Extension Methods (Visual Basic) or
Extension Methods (C# Programming Guide).
See Also