DOCUMENT:Q181857 27-FEB-1998 [vbwin] TITLE :PRB: RDO Run-time Error '40060': Incorrect Type for Parameter PRODUCT :Microsoft Visual Basic for Windows PROD/VER:WINNT:5.0 WIN95:5.0 OPER/SYS:Win95 winnt KEYWORDS:VBKBRDOResultSet ====================================================================== --------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual Basic Enterprise Edition for Windows, version 5.0 --------------------------------------------------------------------- SYMPTOMS ======== When assigning the value of a field from one Resultset to another (such as, rs2!FieldX = rs1!FieldY), you may get the following error: Run-time error '40060' Incorrect type for parameter CAUSE ===== FieldY has a NULL value. RESOLUTION ========== To resolve this problem, do one of the following: - Use the following assignment expression: rs2!FieldX = rs1!FieldY.Value - Assign the value of the field to a Variant variable as an intermediate step: MyVariant = rs1!FieldY rs2!FieldX = MyVariant STATUS ====== Microsoft is researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available. MORE INFORMATION ================ Steps to Reproduce Behavior --------------------------- 1. Use ISQL/W or another tool to create a table using the following SQL statement: CREATE TABLE dbo.TestNull ( ID int NOT NULL , F1 varchar (10) NULL , CONSTRAINT PK_TestAddNew_1__15 PRIMARY KEY CLUSTERED ( ID ) ) 2. Add a record, leaving F1 with a NULL value. You may do this in ISQL/W or VISDATA in Visual Basic. 3. In Visual Basic 5.0, create a new project. 4. Reference Microsoft Remote Data Objects 2.0. 5. Add a command button (Command1) and the following code: Private Sub Command1_Click() Dim cn As rdoConnection, rs1 As rdoResultset, rs2 As rdoResultset rdoEngine.rdoDefaultCursorDriver = rdUseServer Set cn = rdoEngine(0).OpenConnection("", rdDriverNoPrompt, False, _ "Driver={SQL Server};Server=moonbase;uid=sa;pwd=;database=pubs") Set rs1 = cn.OpenResultset("SELECT * FROM TestNull", _ rdOpenKeyset, rdConcurValues, rdExecDirect) rs1.MoveLast Set rs2 = cn.OpenResultset("SELECT * FROM TestNull", _ rdOpenKeyset, rdConcurValues, rdExecDirect) rs2.Edit rs2!F1 = rs1!F1 rs2.Update rs1.Close rs2.Close cn.Close End Sub 6. Run the project and click the command button and the error message will appear. 7. Change the line: rs2!F1 = rs1!F1 to: rs2!F1 = rs1!F1.Value 8. Run the project again, and the error will not appear. (c) Microsoft Corporation 1998, All Rights Reserved. Contributions by Malcolm Stewart, Microsoft Corporation ====================================================================== Keywords : VBKBRDOResultSet Version : WINNT:5.0 WIN95:5.0 Platform : Win95 winnt Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1998.