GUIDFromString Function

GUIDFromString(stringexpression)

The GUIDFromString function has the following argument.

Remarks

The Microsoft Jet database engine stores GUIDs as arrays of type Byte. However, Microsoft Access can't return Byte data from a control on a form or report. In order to return the value of a GUID from a control, you must convert it to a string. To convert a GUID to a string, use the StringFromGUID function. To convert a string to a GUID, use the GUIDFromString function.

Example

The following example uses the GUIDFromString function to convert a string to a GUID. The string is a GUID stored in string form in a replicated Employees table. The field, s_GUID, is a hidden field added to every replicated table in a replicated database.

Sub CheckGUIDType()

    Dim dbsConn As ADODB.Connection
    Dim rstEmployees As ADODB.Recordset

    ' Make a connection to the current database.
    Set dbsConn = Application.CurrentProject.Connection
    Set rstEmployees = New ADODB.Recordset
    rstEmployees.Open "Employees", dbsConn, , , adCmdTable

    ' Print the GUID to the immediate window.
    Debug.Print rst!s_GUID
    Debug.Print TypeName(rst!s_GUID)
    Debug.Print TypeName(GuidFromString(rst!s_GUID))

    Set rstEmployees = Nothing
    Set dbsConn = Nothing

End Sub