try putting ur localhost's IP address i.e., 127.0.0.1. This worked for me, and shud work for u also if u r also using IIS server. :) parshu

here a code example how i do it my apps : Dim cnO As New OleDbConnection("ConnectionString") Dim param As New OleDbParameter("@CategoryID", 5) Dim retval As Integer cnO.Open() Dim cmd As New OleDbCommand("Select CategoryID from Categories Where CategoryID=@CategoryID", cnO) cmd.Parameters.Add(param) retval = cmd.ExecuteScalar cnO.Close() i'm using Northwind db for example sake, substitute that with ur table. parshu

yup, that the solution to ur problem. Since u already have found ur answer i am not going to say anything on that, but i'll tell why u got this error at the first place. That's bcs u installed ur IIS after u installed ur .net, right ?? Parshu

does this sql statement help u in any way : Select CustomerCode, OrderDate, ProductId, Quantity From [Order] a Inner Join OrderDetails b On a.OrderID = b.OrderID Where a.CustomerCode = 55 Try not using Keywords for Table/Column names (like Order). Parshu

use sender object to identify ur object. in this case sender is ur button, just simply check it's id, like this : Response.Write(sender.id) and u'll know who's calling it. Parshu