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OdbcDataReader.IsDBNull Method

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

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

public override bool IsDBNull(
	int i
)

Parameters

i
Type: System.Int32

The zero-based column ordinal.

Return Value

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

Implements

IDataRecord.IsDBNull(Int32)

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

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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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