共用方式為

IDTSInputColumn90.IsValid Property

  • 發行項

Gets a value that indicates whether an input column references an upstream column.

命名空間: Microsoft.SqlServer.Dts.Pipeline.Wrapper
組件: Microsoft.SqlServer.DTSPipelineWrap (in microsoft.sqlserver.dtspipelinewrap.dll)

語法

'宣告
<DispIdAttribute(122)> _
ReadOnly Property IsValid As Boolean

[DispIdAttribute(122)] 
bool IsValid { get; }

[DispIdAttribute(122)] 
property bool IsValid {
    bool get ();
}

/** @property */
/** @attribute DispIdAttribute(122) */ 
boolean get_IsValid ()

DispIdAttribute(122) 
function get IsValid () : boolean

屬性值

true if the IDTSOutputColumn90 object still exists and has the same properties; otherwise, false.

備註

Input columns always reference an output column from an upstream component. The output column of the upstream component is identified by the LineageID property of the input column. An input column is no longer valid if a column upstream from the input column cannot be found that has the same lineage ID as the input column. These types of columns are often referred to as orphans because their origination no longer exists.

執行緒安全性

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

平台

開發平台

如需受支援的平台清單，請參閱＜安裝 SQL Server 2005 的硬體和軟體需求＞。

目標平台

如需受支援的平台清單，請參閱＜安裝 SQL Server 2005 的硬體和軟體需求＞。

請參閱

參考

IDTSInputColumn90 Interface
IDTSInputColumn90 Members
Microsoft.SqlServer.Dts.Pipeline.Wrapper Namespace