Hi, I have an application that consists of multiple combo boxes, list boxes, etc. Most of the combo boxes are bound to a datasource. What I wanted to do was add one row to each combo box with the value of "_None" so that if the user had selected an entry and then did not want the entry, there was an easy solution - select the "_None" entry. However, when I tried to add this row to a control having a datasource I get the following error message:
"Cannot modify the Items Collection when the DataSource property is set. System.Windows.Forms"
I would appreciate any help with this - but, I don't want to have to store the "_None" value in the actual table that the datasource uses.
Thanks in advance!
Tim
Adding a row to a control bound to a datasource
Brenden
Thanks, I appreciate the information!
Tim
santosh k singh
You need to add "_None" to your datasources first, then rebind the datasources and the combobox again.
Justin Niemetscheck
I don't think you can. Unless you modify the datasources first before binding.
Are you going to update the datasource back to database
anayconsultancy
Thanks for the reply. No, I don't want to update the database. I should have been a little more detailed in my explanation. Here is what I wanted to do:
Use the .Items.Add("_None") method of the combo box to add the "_None" entry to the combo box. Actually, I should use the .Items.Insert method to add it as the first row of the combo box. Anyway, when I try to do the .Items.Add method on a combo box that is bound to a datasource, I get the error message I listed in my original posting.
Hope this clarifies what I am trying to do, and I do appreciate your response!
Take care,
Tim