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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.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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