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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 ()
DataTable GetSchemaTable ()
function GetSchemaTable () : DataTable

Return Value

A DataTable that describes the column metadata.

Exception typeCondition

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 and System.Data.SqlClient.SqlResultSet.GetSchemaTable.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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