Databound form understanding problem (how to set foreign keys automatically to new foreign entries)?


I have a typical windows form (not a grid) and like to populate a
foreign key automatically on a newly created entry.
I have solved this by filling the new foreign data when the id field
gets changed, has a valid key value and the foreign
field is empty.

But it takes very long time until I get the id of the newly created
TableX from dataContext.
Also the form gets refreshed and does not again display the lastly
created TableX entry.

        public void Fill()

        private void idTextBox_TextChanged(object sender, EventArgs e)
            if (tableyComboBox.SelectedIndex < 0 &&
int.Parse(idTextBox.Text) < 0)
                MyDataContext dataContext = new MyDataContext();
                TableY Y = new TableY();
                Y.Name = "New default entry";

                TableX X = dataContext.TableX.Where(a => ==
                X.TableY= Y;




What's wrong?


5/5/2010 12:36:33 PM
dotnet.languages.csharp 1931 articles. 0 followers. Follow

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