It is because.first u are seting the data source and then u might be setting the dispaly member and value member.... u can do like this cmbClassId.DisplayMember = dataSet.Tables[Constants.CLASSES].Columns["ClassName"].ToString(); cmbClassId.ValueMember = dataSet.Tables[Constants.CLASSES].Columns["ClassID"].ToString(); cmbClassId.DataSource = dataSet.Tables[Constants.CLASSES]; This will cause event to occure only once. dipak

It appears to be in your code behind somewhere as it can't load the "type". The aspx page is obviously trying to get the dll. is it a namespace thing or different class naming. should be namespace CodyASPNETTest { public class WebForm1 : System.Web.UI.Page { etc. etc. or You have published the dll to the bin folder? Hope this helps Steve He who laughs last thinks slowest.

Just kill/start the process! Look under services for WWW's commandline. Hey leppie! Your "proof" seems brilliant and absurd at the same time. - Vikram Punathambekar 28 Apr '03