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OleDbDataReader.IsDBNull Method

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
)
public override function IsDBNull (
	ordinal : int
) : boolean
Not applicable.

Parameters

ordinal

The zero-based column ordinal.

Return Value

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

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.

Windows 98, Windows Server 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 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, 1.1, 1.0

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