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DataTableReader.FieldCount Property

Returns the number of columns in the current row.

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

public override int FieldCount { get; }

Property Value

Type: System.Int32
When not positioned in a valid result set, 0; otherwise the number of columns in the current row.

Implements

IDataRecord.FieldCount

ExceptionCondition
InvalidOperationException

An attempt was made to retrieve the field count in a closed DataTableReader.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0

.NET Compact Framework

Supported in: 3.5, 2.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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