SqlCeDataReader.IsDBNull Method

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

Namespace: System.Data.SqlServerCe
Assembly: System.Data.SqlServerCe (in system.data.sqlserverce.dll)


Public Overrides Function IsDBNull ( _
    ordinal As Integer _
) As Boolean
public override bool IsDBNull (
    int ordinal
virtual bool IsDBNull (
    int ordinal
) override
public boolean IsDBNull (
    int ordinal
public override function IsDBNull (
    ordinal : int
) : boolean


  • ordinal
    The zero-based column ordinal.

Return Value

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


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

Thread Safety

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.


Development Platforms

Windows Vista, Windows Mobile 5.0, Windows XP Professional with Service Pack 2 (SP2), Windows Server 2003, Windows Mobile 2003 for Pocket PC, Windows CE 5.0
Version Information
.NET Framework and NET Compact Framework
Supported in 3.5
.NET Framework
Supported in 3.0
.NET Compact Framework and .Net Framework
Supported in 2.0

See Also


SqlCeDataReader Class
SqlCeDataReader Members
System.Data.SqlServerCe Namespace