PC Forms: Err Msg: "Invalid Column Value" Using Grid Control

• Microsoft Electronic Forms Designer, version 1.0, running with Microsoft Mail for PC Networks, version 3.0 or 3.2

SYMPTOMS

When you read a message that was created using a custom form created with version 1.0 of the Microsoft Electronic Forms Designer, you may receive one of the following error messages:

   Invalid Column Value

   Invalid Row Value

CAUSE

This problem can occur if the custom form contains a grid control that is empty or has only one row of data.

RESOLUTION

When the data in a custom form is unpackaged, the MEF ReadTaggedControls function expects a token at the end of the grid data string. When the grid has 0 or 1 rows, it is not there. To resolve this problem, you can update the code for the WriteTaggedControls and ReadTaggedControls functions by performing the following steps:

1. Open your E-Form project in Visual Basic.

2. In the Project window, select EFORM.BAS.

3. In the Procedures drop-down list box, select WriteTaggedControls.

4. Scroll to the section commented Grid Control.

5. Add the following code below the line:

   gridClip = Format$(ctrl.Rows) & Chr$(9) & Format$(ctrl.Cols) & Chr$(9) &ctrl.Clip

   If Right$(gridClip, 1) <> Chr$(13) Then

        gridClip = gridClip & Chr$(13)
   

   End If

   The line that follows the new code is:

   MEFWriteText package, Tag, gridClip

6. From the Procedures drop-down list box, select ReadTaggedControls.

7. Scroll to the section commented Grid Control.

8. Add the following code below the line:

   gridClip = MEFReadText(package, Tag, "")

   If Right$(gridClip, 1) <> Chr$(13) Then

        gridClip = gridClip & Chr$(13)
   

   End If

   The lines that follow the new code are:

   ctrl.Rows = Val(MEFGetToken(gridClip, Chr$(9))) ctrl.Cols = Val(MEFGetToken(gridClip, Chr$(9)))