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dotnet windows forms
group:DataGridViewCheckBoxColumn
dotnet windows forms:
What is the type of the data in the DataColumn?
-- HTH, Kevin Spencer Microsoft MVP Chicken Salad Surgery Who is Mighty Abbott? A twin-turret scalawag. "jsh02_nova@hotmail.com" <jsh02novahotmailcom@discussions.microsoft.com> [quoted text, click to view] wrote in message news:EC435806-31CE-4C8A-8F8D-DA27B2F13E2D@microsoft.com... > 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? [quoted text, click to view] "Kevin Spencer" wrote:
> What is the type of the data in the DataColumn? > > -- > HTH, > > Kevin Spencer > Microsoft MVP > Chicken Salad Surgery > > Who is Mighty Abbott? A twin-turret scalawag. > > "jsh02_nova@hotmail.com" <jsh02novahotmailcom@discussions.microsoft.com> > wrote in message news:EC435806-31CE-4C8A-8F8D-DA27B2F13E2D@microsoft.com... > > 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. -- HTH, Kevin Spencer Microsoft MVP Chicken Salad Surgery Expect the unaccepted. "jsh02_nova@hotmail.com" <jsh02novahotmailcom@discussions.microsoft.com> [quoted text, click to view] wrote in message news:B0955D0D-DB34-4BB0-9B27-03E9C27776DD@microsoft.com... > 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? > > "Kevin Spencer" wrote: > >> What is the type of the data in the DataColumn? >> >> -- >> HTH, >> >> Kevin Spencer >> Microsoft MVP >> Chicken Salad Surgery >> >> Who is Mighty Abbott? A twin-turret scalawag. >> >> "jsh02_nova@hotmail.com" <jsh02novahotmailcom@discussions.microsoft.com> >> wrote in message >> news:EC435806-31CE-4C8A-8F8D-DA27B2F13E2D@microsoft.com... >> > What would prevent a DataGridViewCheckBoxColumn control in a >> > 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. [quoted text, click to view] "Kevin Spencer" wrote:
> 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. > > -- > HTH, > > Kevin Spencer > Microsoft MVP > Chicken Salad Surgery > > Expect the unaccepted. > > "jsh02_nova@hotmail.com" <jsh02novahotmailcom@discussions.microsoft.com> > wrote in message news:B0955D0D-DB34-4BB0-9B27-03E9C27776DD@microsoft.com... > > 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? > > > > "Kevin Spencer" wrote: > > > >> What is the type of the data in the DataColumn? > >> > >> -- > >> HTH, > >> > >> Kevin Spencer > >> Microsoft MVP > >> Chicken Salad Surgery > >> > >> Who is Mighty Abbott? A twin-turret scalawag. > >> > >> "jsh02_nova@hotmail.com" <jsh02novahotmailcom@discussions.microsoft.com> > >> wrote in message > >> news:EC435806-31CE-4C8A-8F8D-DA27B2F13E2D@microsoft.com... > >> > What would prevent a DataGridViewCheckBoxColumn control in a > >> > 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. -- HTH, Kevin Spencer Microsoft MVP Chicken Salad Surgery Expect the unaccepted. "jsh02_nova@hotmail.com" <jsh02novahotmailcom@discussions.microsoft.com> [quoted text, click to view] wrote in message news:4BD121CC-9543-411C-996E-39B6994A1F72@microsoft.com... > 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. > > "Kevin Spencer" wrote: > >> 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. >> >> -- >> HTH, >> >> Kevin Spencer >> Microsoft MVP >> Chicken Salad Surgery >> >> Expect the unaccepted. >> >> "jsh02_nova@hotmail.com" <jsh02novahotmailcom@discussions.microsoft.com> >> wrote in message >> news:B0955D0D-DB34-4BB0-9B27-03E9C27776DD@microsoft.com... >> > 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? >> > >> > "Kevin Spencer" wrote: >> > >> >> What is the type of the data in the DataColumn? >> >> >> >> -- >> >> HTH, >> >> >> >> Kevin Spencer >> >> Microsoft MVP >> >> Chicken Salad Surgery >> >> >> >> Who is Mighty Abbott? A twin-turret scalawag. >> >> >> >> "jsh02_nova@hotmail.com" >> >> <jsh02novahotmailcom@discussions.microsoft.com> >> >> wrote in message >> >> news:EC435806-31CE-4C8A-8F8D-DA27B2F13E2D@microsoft.com... >> >> > What would prevent a DataGridViewCheckBoxColumn control in a >> >> > DataGridView >> >> > from being bound to its data in the Datasource table? >> >> >> >> >> >> >> >> >>
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