如何創建在ms訪問GUID自動編號programaticaly

Question

我想創建guid自動編號字段programaticaly，但我不能。請幫幫我。 我正在使用c＃。

Answer 1

爲了使您的GUID字段的自動增量，使用GenGUID（）因爲它是默認值。

這適用於使用ADO的Access。也許類似的聲明將在C＃中的工作：

CurrentProject.Connection.Execute "CREATE TABLE hede (Id Guid DEFAULT GenGUID())" 

Answer 2

你知道如何針對Jet或ACE連接運行sql嗎？

CREATE TABLE Literal (LinkID GUID) 

INSERT INTO Literal (LinkID) VALUES ({guid {11223344-1122-1122-1122-AABBCCDDEEFF}}) 

Answer 3

這可能會有所幫助：

http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q180841

此外，使用DAO：

What is the MS Access SQL syntax to create a field of type Hyperlink?

Answer 4

如果它的C＃，然後

string myguid = Guid.NewGuid.ToString; 

如果它的訪問則

Private Declare Function CreateGuid Lib "OLE32.DLL" (pGuid As GUID) As Long 
Private Declare Function StringFromGUID2 Lib "OLE32.DLL" (pGuid As GUID, ByVal PointerToString As Long, ByVal MaxLength As Long) As Long 

Private Type GUID 
    Guid1   As Long 
    Guid2   As Integer 
    Guid3   As Integer 
    Guid4(0 To 7) As Byte 
End Type 

Public Function CreateGUIDKey() As String 
    Const GUID_OK As Long = 0  
    Const GUID_LENGTH As Long = 38 

    Dim udtGUID As GUID 
    Dim FormattedGUID As String 
    Dim Result As Long 

    Result = CreateGuid(udtGUID) 

    If Result = GUID_OK Then 
     FormattedGUID = String$(GUID_LENGTH, 0) 
     StringFromGUID2 udtGUID, StrPtr(FormattedGUID), GUID_LENGTH + 1 
    Else 
     FormattedGUID = "" 
    End If 

    CreateGUIDKey = FormattedGUID 

End Function