OleDbEnumerator::GetEnumerator Method (Type^)
Uses a specific OLE DB enumerator to return an OleDbDataReader that contains information about the currently installed OLE DB providers, without requiring an instance of the OleDbEnumerator class.
Assembly: System.Data (in System.Data.dll)
Parameters
- type
-
Type:
System::Type^
A Type.
Return Value
Type: System.Data.OleDb::OleDbDataReader^Returns an OleDbDataReader that contains information about the requested OLE DB providers, using the specified OLE DB enumerator.
| Exception | Condition |
|---|---|
| InvalidCastException | The provider does not support ISourcesRowset. |
| OleDbException | An exception has occurred in the underlying provider. |
The reader that is returned by this method contains the following columns, all of which contain strings:
Column ordinal | Column | Description |
|---|---|---|
0 | SOURCES_NAME | The invariant name of the native OLE DB data source or enumerator. |
1 | SOURCES_PARSENAME | A human-readable name that can be converted to a moniker by using the native COM interface IParseDisplayName. Corresponds to the SOURCES_PARSENAME column returned by the native OLE DB sources rowset. |
2 | SOURCES_DESCRIPTION | Description of the native OLE DB data source. Corresponds to the SOURCES_DESCRIPTION column returned by the native OLE DB sources rowset. |
3 | SOURCES_TYPE | One of the following enumeration members: Binder (0), DataSource_MDP (1), DataSource_TDP (2), Enumerator (3). These correspond to the values returned in the SOURCES_TYPE column of the native OLE DB sources rowset. |
4 | SOURCES_ISPARENT | Applicable to enumerators only. If true, indicates that the entry applies to the same enumerator on which GetSourcesRowset was called, implying that it is also included in the sub-enumeration. Corresponds to the SOURCES_ISPARENT column of the native OLE DB sources rowset |
OLE DB provides several enumerator components, including MSDAENUM, MSDASQL Enumerator, SQLNCLI Enumerator, SQLOLEDB Enumerator, and others. For more information about the enumerator components and how to use them, see the OLE DB Programmer's Reference.
Available since 2.0