EndCurrentEdit does not push changes into the dataset

27 Jan 2006 5:28 PM

susan

I have a Windows Form written in C# with a non-edit DataGrid showing a
list of records. When the user selects a row in the grid, the full
details of the record display in a panel which contains textboxes and
comboboxes. The underlying datatable that the detail panel is bound to
only ever has one record at a given time.

When the user edits the detail record and then issues a save command by
clicking the save button, all works well. This is because the focus
moves from the current control and current record to the button.

However if the user issues a Save by pressing the F2 key (caught by the
form's ProcessCmdKey), the focus remains in the current control and
current record. Under these circumstances, the EndCurrentEdit will not
push the changes into the dataset.

I tried calling EndCurrentEdit() on each control (in the control leave
event) in the following ways:

control.BindingContext[dataset.Tables[datatablename]].EndCurrentEdit();

   if (control.DataBindings.Count > 0)
   {
      control.DataBindings[0].BindingManagerBase.EndCurrentEdit();
   }

I tried calling EndEdit() on the datatable row
   dataset.Tables[datatablename].Rows[rownumber].EndEdit()

I then implemented a BindingManagerBase as follows:
   bindMgrBase = this.BindingContext [mydataset, datatablename];
and on save called
   bindMgrBase.EndCurrentEdit()

I tried
1) moving programmatically to the next textbox control
2) moving programmatically back to the datagrid
3) moving programmatically to a button

I suspect that the EndCurrentEdit() requires the user to move off the
current record. That is difficult to test as the record detail panel
only ever has one record at a given time.

Is there any way to make this work? Anyone have any ideas for me?
....Susan

30 Jan 2006 9:35 AM

Cor Ligthert [MVP]

Susan,

Did you try to set the endcurrentedit exactly before your updatecommands (of
course including things as haschanges and methods like that).

Normally that is the place that it is needed.

Or do you use it for something else?

Where it is as well needed is as you use expressioncolumns showing the
result on the screen.

I hope this helps,

Cor