DataboundGrid PushButton Cell & Visual Studio 2003

[Administrator]

Hi I have a simple form on which I have placed a DGB. Using the designer I have made one of these columns a "pushbutton". When I close the form I am editing then go back into it. I get a build error appear on the VS task list saying: "Object reference not set to an instance of an object.". If I remove the pushbutton column from my grid the error disappears. From my code I dont see what I have done wrong as all I used was the designer. I attach the source code for the form in question. Mark markdev_8449.zip

[Administrator]

Update:

I think I have found the problem. I didnt specify a mapping name for the column. The reason I didnt specify one is becuase I just wanted a column with a button in it that uses a value from one of the other columns, so I didnt see a reason to enter a mapping name.

Just out of interest is there a way around this behaviour?

Mark

[Administrator]

Bah scratch that last post. It seems that the error went away after I had edited the grid control using the designer then when I closed and re-opened the form back it came.

Mark

[Administrator]

This appears to be a bug.

If you open up the designer generated code and comment out (or remove) this line

Me.col_reprint.StyleInfo.Text = ""

the problem will go away (until the next time you touch this GridBoundColumn in the designer.)

This is been entered into our Open Issues database as #497. In a day or so, it should be exposed in our Opens Issues area of our website so you can track it.

[Administrator]

Ok, well at least im not going mad.

Just as an aside did you ever get that grid resize problem on mdi forms sorted out. As I keep putting my grids on panels to make them size correctly. Just I cant see it on the open issues page.

Mark

[Administrator]

Can you refresh my memory about this problem? Were we able to reproduce it here is a sample? This is one of the requirements of adding a problem to our open issue database.

[Administrator]

Yes you sent me a sample that showed the problem. Basically you stick a grid on a mdi child form resize it about a bit then minimize and maximise and the grid flys off the edge of the form.

I cant find the thread at the moment. You need a better search facilty. :P

Mark

[Administrator]

No, this has not been fixed.

I think you can work around it by putting a Panel where you have the grid, and then adding the grid to the Panel with grid.DockStyle = fill.