SqlCeDataReader.GetGuid Method

Artikel
03/29/2011

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 nulla 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.

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