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Q190111: FIX: In Grid, 2nd Character Overwrites 1st If Old Value Is NULL

Article: Q190111
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0,3.0b,5.0,5.0a
Operating System(s): 
Keyword(s): 
Last Modified: 11-DEC-1999

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0, 5.0a 
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SYMPTOMS
========

Typing numeric data greater than one digit in length into a grid's textbox where
the original value of the column's ControlSource is NULL and the column.Sparse =
.F., causes the second character to overwrite the first character.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. We are researching this bug and will post new
information here in the Microsoft Knowledge Base as it becomes available. This
bug is fixed in Visual FoxPro 6.0.

MORE INFORMATION
================

Steps to Reproduce Behavior
---------------------------

1. Run the following code from a program (.prg) file:

        PUBLIC oform1
        CREA TABLE nulltest (f1 N(10,2) NULL)
        FOR lni = 1 TO 5
           INSERT INTO nulltest VALUES (.NULL.)
        ENDFOR
        USE nulltest

        oform1=CREATEOBJECT("form1")
        oform1.SHOW
        RETURN

        DEFINE CLASS form1 AS FORM

           TOP = 0
           LEFT = 0
           HEIGHT = 268
           WIDTH = 378
           CAPTION = "Form1"
           NAME = "Form1"

           ADD OBJECT grd1 AS GRID WITH ;
              COLUMNCOUNT = 1, ;
              LEFT = 33, ;
              RECORDSOURCE = "nulltest", ;
              RECORDSOURCETYPE = 1, ;
              TOP = 28, ;
              NAME = "grd1", ;
              Column1.SPARSE = .F., ;
              Column1.NAME = "Column1"
        ENDDEFINE

2. Type in 25, then press the DOWN ARROW key.

RESULTS: The 2 appears, then is overwritten by the 5, and the text box value is
5.00 after you press the DOWN ARROW key. This does not happen if the grid Sparse
property is .T. rather than .F., or if the field value is not NULL.
(c) Microsoft Corporation 1998, All Rights Reserved.
Contributions by Jim Saunders, Microsoft Corporation


Additional query words: kbDSupport KBDSE kbVFp500abug kbVFp300bbug kbVFp600fix kbXBase

======================================================================
Keywords          :  
Technology        : kbVFPsearch kbAudDeveloper kbVFP300 kbVFP300b kbVFP500 kbVFP500a
Version           : WINDOWS:3.0,3.0b,5.0,5.0a
Issue type        : kbbug
Solution Type     : kbfix

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