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OleDbDataReader.IsDBNull Method

.NET Framework 2.0

Gets a value that indicates whether the column contains nonexistent or missing values.

Namespace: System.Data.OleDb
Assembly: System.Data (in system.data.dll)

public override bool IsDBNull (
	int ordinal
)

public boolean IsDBNull (
	int ordinal
)

JScript

public override function IsDBNull (
	ordinal : int
) : boolean

Parameters

ordinal: The zero-based column ordinal.

Return Value

true if the specified column value is equivalent to DBNull; otherwise, false.

Remarks

Call this method to look for null column values before calling the typed get methods (for example, GetByte, GetChar, and so on) to avoid raising an error.

Platforms

Windows 98, Windows 2000 SP4, Windows Millennium Edition, 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.

Version Information

.NET Framework

Supported in: 2.0, 1.1, 1.0

Reference

OleDbDataReader Class
OleDbDataReader Members
System.Data.OleDb Namespace

Other Resources

Working with DataReaders

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