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.NET Forum / Windows Forms / WinForm General / August 2006DataGridViewCheckBoxColumn
What would prevent a DataGridViewCheckBoxColumn control in a DataGridView from being bound to its data in the Datasource table? What is the type of the data in the DataColumn?  SignatureHTH, Kevin Spencer Microsoft MVP Chicken Salad Surgery Who is Mighty Abbott? A twin-turret scalawag. > What would prevent a DataGridViewCheckBoxColumn control in a DataGridView > from being bound to its data in the Datasource table? Thanks for the response. The Data type is Boolean. I've check the DataPropertyName and they both match. The CurrentCellChangedValue event fires and the underlying datatable changes also, but that is my only hint that some has changed, is that the ChangedValue event fires. The CurrentCellIsDirty value never changes for the DataGridView. Do you have any clues as to what causes this behavior in a winform? > What is the type of the data in the DataColumn? > > > What would prevent a DataGridViewCheckBoxColumn control in a DataGridView > > from being bound to its data in the Datasource table? I just checked this out with an app I have written, and the IsCurrentCellDirty property does change. When are you checking it? When you click a DatGridViewCheckBoxCell, there are several events that fire, depending on the circumstances. First, if another cell had the focus, the CellEndEdit event fires. At this point, the CurrentCell is not the DataGridViewCheckBoxCell. After it is checked, the CellValidating event fires. At this point, the IsCurrentCellDirty property is still false, even though the CheckBox value is changed. It is when the CellEndEdit event fires that the actual underlying value is changed, and the IsCurrentCellDirty property is true. SignatureHTH, Kevin Spencer Microsoft MVP Chicken Salad Surgery Expect the unaccepted. > Thanks for the response. > The Data type is Boolean. I've check the DataPropertyName and they both [quoted text clipped - 11 lines] >> > DataGridView >> > from being bound to its data in the Datasource table? Thanks for the response Kevin, First I'm checking the IsCurrentCellDirty property during the CellValueChanged event fires. My CellBeginEdit and CellEndEdit events never fire. I have to change the value of the cell programmatically during the CellClicked event, because the check box control won't do it for me automatically. The only other event that does fire is the CellFormatting and the CellEnter. Thanks for you help. > I just checked this out with an app I have written, and the > IsCurrentCellDirty property does change. When are you checking it? When you [quoted text clipped - 22 lines] > >> > DataGridView > >> > from being bound to its data in the Datasource table? Well, I'm stumped. Assuming that your DataGridView is bound to a DataTable via a BindingSource, which is the scenario I'm working with, it should fire all of those events (at different times). And you should not have to change the value of the cell programmatically. SignatureHTH, Kevin Spencer Microsoft MVP Chicken Salad Surgery Expect the unaccepted. > Thanks for the response Kevin, > First I'm checking the IsCurrentCellDirty property during the [quoted text clipped - 38 lines] >> >> > DataGridView >> >> > from being bound to its data in the Datasource table? Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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