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IDataRecord.IsDBNull Method

Return whether the specified field is set to null.

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

bool IsDBNull(
	int i
)

Parameters

i
Type: System.Int32

The index of the field to find.

Return Value

Type: System.Boolean
true if the specified field is set to null; otherwise, false.

ExceptionCondition
IndexOutOfRangeException

The index passed was outside the range of 0 through FieldCount.

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

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, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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