SqlCeDataReader.GetGuid Method

Article
10/22/2009

Gets the value of the specified column as a globally unique identifier (GUID).

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

Syntax

'Declaration
Public Overrides Function GetGuid ( _
    ordinal As Integer _
) As Guid

public override Guid GetGuid (
    int ordinal
)

public:
virtual Guid GetGuid (
    int ordinal
) override

public Guid GetGuid (
    int ordinal
)

public override function GetGuid (
    ordinal : int
) : Guid

Parameters

ordinal
The zero-based column ordinal.

Return Value

The value of the specified column.

Exceptions

Exception type	Condition
InvalidCastException	The specified cast is not valid.
SqlNullValueException	The value is null.
InvalidOperationException	The operation is not valid. The SqlCeDataReader may be positioned after the last row in the result set.

Remarks

No conversions are performed; therefore, the data retrieved must already be a globally unique identifier.

Call IsDBNull to check for null values before calling this method.

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.

Platforms

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