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StringFromGUID Function

The StringFromGUID function converts a GUID, which is an array of type Byte, to a string.

The StringFromGUID 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 back to a GUID, use the GUIDFromString function.

For example, you may need to refer to a field that contains a GUID when using database replication. To return the value of a control on a form bound to a field that contains a GUID, use the StringFromGUID function to convert the GUID to a string.

Note that in order to bind a control to the s_GUID field of a replicated table, you must select the System objects check box on the View tab of the Options dialog box (Tools menu).

Example

The following example returns the value of the s_GUID control on an Employees form in string form and assigns it to a string variable. The s_GUID control is bound to the s_GUID field, one of the system fields added to each replicated table in a replicated database.

Public Sub StringValueOfGUID()

    Dim ctl As Control
    Dim strGUID As String

    ' Get the GUID.
    Set ctl = Forms!Employees!s_GUID
    Debug.Print TypeName(ctl.Value)

    ' Convert the GUID to a string.
    strGUID = StringFromGUID(ctl.Value)
    Debug.Print TypeName(strGUID)

End Sub