GetGuid Method

Gets the value of the specified column as a System.Guid (globally-unique identifier) object.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++

'Declaration
 
Public Overrides NotOverridable Function GetGuid( _
   ByVal i As Integer _
) As Guid

public override Guid GetGuid( 
   int i
)

public function GetGuid( 
    i: Integer
): Guid; override;

public override function GetGuid( 
   i : int
) : Guid;

public: Guid GetGuid( 
   int i
) override

Parameters

i: The zero-based column ordinal position.

Return Value

The value of the column as a System.Guid object.

Exceptions

Exception	Description
System.InvalidCastException	The underlying SQL data type cannot be converted to System.Guid.
System.InvalidOperationException	The MimerDataReader is not positioned on a row.
System.IndexOutOfRangeException	The column ordinal is outside the valid range.

Remarks

Supported SQL data types for the conversion are: BUILTIN.UUID, BINARY(16) or a VARBINARY of length 16.

The actual byte order of a Windows GUID and a UUID is slightly different due to byte order of the different fields. For example: 11223344-5566-7788-99aa-bbccddeeff00 is converted to 44332211-6655-8877-99aa-bbccddeeff00 according to byte order changes between UUID and GUID. This is handled transparently by this routine.

Use the IsDBNull method to check for database null value before calling this method.

Requirements

.NET Framework
Version 2.0 or later

Reference

MimerDataReader Class
MimerDataReader Members