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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)

'Declaration
Function GetSchemaTable As DataTable

Return Value

Type: System.Data.DataTable
A DataTable that describes the column metadata.

ExceptionCondition
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

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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