DTSUsageType Enum
Definition
Important
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Indicates how an IDTSInputColumn100 object is used by a component.
public enum class DTSUsageTypepublic enum DTSUsageTypetype DTSUsageType = Public Enum DTSUsageType- Inheritance
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DTSUsageType
Fields
| Name | Value | Description |
|---|---|---|
| UT_READONLY | 0 | The component will read the values of an input column, but will not modify them. |
| UT_READWRITE | 1 | The component will read and write to the column data. |
| UT_IGNORED | 2 | The column is ignored by the component. |
Remarks
This enumeration contains values that indicate how a component will use an IDTSInputColumn100 object.
Components validate that each column in their IDTSInputColumnCollection100 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.