IsDBNull Method

DbDataRecord.IsDBNull Method

Used to indicate nonexistent values.

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

public abstract bool IsDBNull(
	int i
)

Parameters

i
Type: System.Int32
The column ordinal.

Return Value

Type: System.Boolean
true if the specified column is equivalent to DBNull; otherwise false.

Implements

IDataRecord.IsDBNull(Int32)

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

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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