DTSUsageType Enumeration
Indicates how an IDTSInputColumn90 object is used by a component.
命名空间: Microsoft.SqlServer.Dts.Pipeline.Wrapper
程序集: Microsoft.SqlServer.DTSPipelineWrap (in microsoft.sqlserver.dtspipelinewrap.dll)
语法
声明
Public Enumeration DTSUsageType
public enum DTSUsageType
public enum class DTSUsageType
public enum DTSUsageType
public enum DTSUsageType
Members
| Member name | Description |
|---|---|
| UT_IGNORED | The column is ignored by the component. |
| UT_READONLY | The component will read the values of an input column, but will not modify them. |
| UT_READWRITE | The component will read and write to the column data. |
备注
This enumeration contains values that indicate how a component will use an IDTSInputColumn90 object.
Components validate that each column in their IDTSInputColumnCollection90 has its UsageType property set correctly.
For example, if a component needs read/write permission to an input column and the column's UsageType property is set to UT_READONLY, it should post a DTS_E_CANTSETUSAGETYPE message and return a failure result from Validate.
平台
开发平台
有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。
目标平台
有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。