Opening a form from a grid event

[Robert J Harder]

Hi,

I am currently trying to invoke a form to load from the current cell validated on a grid. When the Show() method of the form is reached the application stop responding. I have the included some sample code below.

The form is a new instance of the current form.

private void gridQuestions_CurrentCellValidated(object sender, System.EventArgs e)
{
this.hasEdits=true;
GridCurrentCell cc = this.gridQuestions.CurrentCell;
if (gridQuestions[cc.RowIndex,cc.ColIndex].CellType=="ComboBox")
{
GridComboBoxCellRenderer cr = cc.Renderer as GridComboBoxCellRenderer;
if (typeof(dsHouses.QuestionLinkedListValuesRow)==cr.ListBoxPart.SelectedItem.GetType())
{
dsHouses.QuestionLinkedListValuesRow llv= cr.ListBoxPart.SelectedItem as dsHouses.QuestionLinkedListValuesRow;
if (llv!=null&&!llv.IsQuestionLinkedQuestionGroupIdNull())
{
Total_Cost.frmHouseQuestions ch = new frmHouseQuestions(this.objdsHouses,llv.QuestionLinkedQuestionGroupId);
ch.MdiParent=this.MdiParent;
ch.Show();
}
}
}
}

Thanks,

Craig

[Administrator]

Does it help if you call grid.CancelUpdate(); just before calling ch.Show()?

The grid might be in between Begin/EndUpdate calls while this event is raised and because of that Paint messages are ignored which causes some side unwanted effects when showing a dialog. (Something we would have to review again and change in future).

Stefan

[Robert J Harder]

Ok calling CancelUpdate() didn't work, the app stopped responding at this point instead.

I have now hung this off the CurrentCellEditingCompleteEvent. The form now opens as expected.