BUG: Unbinding Grid with SetAll Method Still Displays Data (134707)


The information in this article applies to:

  • Microsoft Visual FoxPro for Windows 3.0
  • Microsoft Visual FoxPro for Windows 3.0b
  • Microsoft Visual FoxPro for Windows 5.0
  • Microsoft Visual FoxPro for Windows 5.0a
  • Microsoft Visual FoxPro for Windows 6.0
This article was previously published under Q134707

SYMPTOMS

After executing the following command to unbind the grid columns from their sources of data, Visual FoxPro still shows data in some of the grid cells when you click the cell:
<form name>.<grid name>.SetAll("ControlSource","","Column")

CAUSE

The text box (the default control) in the grid columns is caching the last value it knew about.

WORKAROUND

In addition to setting the data source to nothing, you need to set the Value property of the text boxes for the grid columns to nothing ("").
<form name>.<grid name>.SetAll("Value","","TextBox")

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

Similar problems are encountered with other controls, such as edit boxes, that are set as the CurrentControl for a grid column.

Steps to Reproduce Problem

NOTE: The following steps assume a working knowledge of the Visual FoxPro Form Designer. See Chapter 9 of the Microsoft Visual FoxPro "Developer's Guide" for more information on working with the Form Designer.
  1. Open the Testdata.dbc database found in the \VFP\Samples\Data directory.
  2. Create a new form.
  3. Add the Customer table from the Testdata database to the DataEnvironment of the form.
  4. Add a grid object by dragging the Grid icon from the Form Controls toolbar and dropping it on the form. Set the Name property of the grid to Grid1.
  5. Set the RecordSource property of the grid to the Customer table.
  6. Save the form as Test.scx, and run it.
  7. In the Command window, issue this command: 
       Test.grid1.SetAll("ControlSource","","Column")
  8. Click any cell in the first column of the grid to have data show up in that cell. Click other cells in the first column. Data should show up in any clicked cell, and the previous cell should appear blank. Data may or may not appear in the other cells of the other columns, depending on which cell was active when the ControlSource was set to blank (""). This behavior is the same, though, no matter which cell is active.
  9. To keep data from showing in any of the cells, issue the following two commands together: 
          Test.grid1.SetAll("ControlSource","","Column")
      Test.grid1.SetAll("Value","","TextBox")
Modification Type:MajorLast Reviewed:5/7/2003
Keywords:kbBug KB134707 kbAudDeveloper
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