Ok, here's the deal:

A winform containing several textboxes. The textboxes are bound to a dataset through code like this:

txtBookTitle.DataBindings.Add(new Binding("Text", dsBook, dsBook.Tables[0].ToString() + ".Title"));

I change the textbox's contents, then in Save button I have the following:

SqlCommandBuilder cmdBuilder = new SqlCommandBuilder(BookDataAdapter);
BookDataAdapter.UpdateCommand = cmdBuilder.GetUpdateCommand;
BookDataAdapter.Update(dsBook, "Books");

However, nothing happens. dsBook.HasChanges() returns false. Why? What I am missing and where to get this info from? I tried MSDN, but the examples I've found just say DbAdapter.Update(). Well.... i did that and it doesn't update. I have looked into UpdateCommand text, it looks ok. So it has to be something else. What?

Thank you.