GetSchemaTable Method
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IDataReader.GetSchemaTable Method ()

 

Returns a DataTable that describes the column metadata of the IDataReader.

Namespace:   System.Data
Assembly:  System.Data (in System.Data.dll)

DataTable GetSchemaTable()

Return Value

Type: System.Data.DataTable

A DataTable that describes the column metadata.

Exception Condition
InvalidOperationException

The IDataReader is closed.

The implementation of GetSchemaTable method for the .NET Framework Data Provider for OLE DB maps to the OLE DB IColumnsRowset::GetColumnsRowset method, while implementations for other .NET Framework data providers do not use an OLE DB provider layer. The order in which GetSchemaTable returns metadata about each column in a table, and the DataReader columns that are returned, vary depending on which data provider you use. The following table lists data providers and members that implement GetSchemaTable.

Data Provider

Member

.NET Data Provider for ODBC

OdbcDataReader.GetSchemaTable.

.NET Data Provider for OLE DB

OleDbDataReader.GetSchemaTable.

.NET Data Provider for Oracle

OracleDataReader.GetSchemaTable.

.NET Data Provider for SQL Server

SqlDataReader.GetSchemaTable.

.NET Framework
Available since 1.1
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