I never quite figured it out but it seems to be when the grid is populated in the form load event the problem happens, so I populated the grid from the form shown event instead which works. It's not ideal as it takes a few seconds to do the binding and to display it properly but it's the best I could come up with.

Hi - I already created the form with a Form load event and it didn't work, so I tried it this way instead. It's the same result either way. I have another form that does the same thing - loads a grid from the Form load event (which doesn't work) and reloads from a button click event (which works). Been going on for over a week now, starting to crack me up!

I'm having a really strange issue with the DataGridView control in a VS2008 / .NET 3.5 winforms project. I have a simple form with a grid. In the form constructor I call a function to bind the grind to a DataTable, and then loop through the rows setting the background colour of the last cell to LightGrey and the cell itself to read-only if the column value is true. After the form finishes loading the code didn't work i.e. the cells are not set to...