Triggering a checkbox value changed event in DataGridView

Question

I have a grid view that has a check box column, and I want to trigger a drawing event as soon as the value of the cell is toggled. I tried the ValueChaged and the CellEndEdi

Answer 1

I found a simple solution.

Just change the cell focus after click on cell.

private void DGV_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
    if (e.ColumnIndex == "Here checkbox column id or name") {
        DGV.Item(e.ColumnIndex, e.RowIndex + 1).Selected = true;
        //Here your code

    }
}

Don't forget to check if the column of your (ckeckbox + 1) index exist.

Answer 2

I use the CellContentClick event, which makes sure the user clicked the checkbox. It DOES fire multiple times even if the user stays in the same cell. The one issue is that the Value does not get updated, and always returns "false" for unchecked. The trick is to use the .EditedFormattedValue property of the cell instead of the Value property. The EditedFormattedValue will track with the check mark and is what one wishes the Value had in it when the CellContentClick is fired.

No need for a timer, no need for any fancy stuff, just use CellContentClick event and inspect the EditedFormattedValue to tell what state the checkbox is going into / just went into. If EditedFormattedValue = true, the checkbox is getting checked.

Answer 3

A colleague of mine recommends trapping the CurrentCellDirtyStateChanged event. See http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.currentcelldirtystatechanged.aspx.