GetGuid Method

Article
09/27/2010

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
'Usage
Dim instance As SqlCeDataReader
Dim ordinal As Integer
Dim returnValue As Guid

returnValue = instance.GetGuid(ordinal)

public override Guid GetGuid(
    int ordinal
)

public:
virtual Guid GetGuid(
    int ordinal
) override

abstract GetGuid : 
        ordinal:int -> Guid 
override GetGuid : 
        ordinal:int -> Guid

public override function GetGuid(
    ordinal : int
) : Guid

Parameters

ordinal
Type: System. . :: . .Int32
The zero-based column ordinal.

Return Value

Type: System. . :: . .Guid
The value of the specified column.

Implements

IDataRecord. . :: . .GetGuid(Int32)

Exceptions

Exception	Condition
InvalidCastException	The specified cast is not valid.
SqlNullValueException	The value is null Nothing nullptr unit a null reference (Nothing in Visual Basic) .
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.