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DataTableReader.GetProviderSpecificFieldType Method

Gets the type of the specified column in provider-specific format.

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

public override Type GetProviderSpecificFieldType (
	int ordinal
public Type GetProviderSpecificFieldType (
	int ordinal
public override function GetProviderSpecificFieldType (
	ordinal : int
) : Type
Not applicable.



The zero-based column ordinal.

Return Value

The Type that is the data type of the object.

Exception typeCondition


The index passed was outside the range of 0 to FieldCount - 1.


An attempt was made to read or access a column in a closed DataTableReader.

Because the DataTableReader always returns the type stored within the underlying DataColumn, the value returned by calling the GetProviderSpecificFieldType method always returns the same type as the type stored within the DataTable. When you work with the DataTableReader class, calling the GetProviderSpecificFieldType method returns the same type as calling the GetType method.

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0