TraceReader.IsNull 方法
Gets a Boolean value that specifies whether value of the data at the specified column position is null.
命名空间： Microsoft.SqlServer.Management.Trace
程序集： Microsoft.SqlServer.ConnectionInfoExtended（在 Microsoft.SqlServer.ConnectionInfoExtended.dll 中）
语法
声明
Public Function IsNull ( _
ordinal As Integer _
) As Boolean
用法
Dim instance As TraceReader
Dim ordinal As Integer
Dim returnValue As Boolean
returnValue = instance.IsNull(ordinal)
public bool IsNull(
int ordinal
)
public:
bool IsNull(
int ordinal
)
member IsNull :
ordinal:int -> bool
public function IsNull(
ordinal : int
) : boolean
参数
- ordinal
类型：System.Int32
An Int32 value that specifies the column position of the data.
返回值
类型：System.Boolean
A Boolean value that specifies whether value of the data at the specified column is null.If True, the value is null.If False, the value is not null.
示例
请参阅
参考
Microsoft.SqlServer.Management.Trace 命名空间