We are using this code in a contextMenuStrip to set marked rows or mark all rows.

Dim dgRow As DataGridViewRow

For Each dgRow In dgv.Rows

dgRow.Cells(0).Value = True

Next

The first cell in each row is a checkboxcell.

When we first enter the grid if we invoke this code the first row is not checked until we move off the row.

also if we debug and break here the value is true the checkbox is just not checked.

help please

What are we missing?

Thank you so much for your response. We found that using 'dgv.EndEdit()' after the 'Next' resolved the problem.

Hi , i think you must set value of checkbox to True by yourself instead of depend on the value that it has now .

You will face this problem if you need to let user check this comboBox and then you take this selected checkBox index , you will find that the CheckBox is checked on Grid , and it's value in runtime is False , and this value will be True if and only if you leave the cell . so you will need to change it's value by yourself in Cell Click Event or CellConentClick event .

I hope this will helpyou .

Thank you so much for your response. We found that using 'dgv.EndEdit()' after the 'Next' resolved the problem.