BusinessLogicDataReader.IsDBNull 方法
此 API 支援 SQL Server 2012 基礎結構，但無法直接從您的程式碼使用。
Indicates whether the column contains nonexistent or missing values.
命名空間： Microsoft.SqlServer.Replication.BusinessLogicSupport
組件： Microsoft.SqlServer.Replication.BusinessLogicSupport (在 Microsoft.SqlServer.Replication.BusinessLogicSupport.dll 中)
語法
'宣告
Public Function IsDBNull ( _
i As Integer _
) As Boolean
'用途
Dim instance As BusinessLogicDataReader
Dim i As Integer
Dim returnValue As Boolean
returnValue = instance.IsDBNull(i)
public bool IsDBNull(
int i
)
public:
virtual bool IsDBNull(
int i
) sealed
abstract IsDBNull :
i:int -> bool
override IsDBNull :
i:int -> bool
public final function IsDBNull(
i : int
) : boolean
參數
- i
型別：System.Int32
The zero-based column ordinal.
傳回值
型別：System.Boolean
true if the specified column is equivalent to DBNull; otherwise false.