I have a web application in ASP.Net (C#) and SQL Server 2005. In the application the end user can enter the customer record. When one end user use the application and enter customer record it works fine. But whenever more then one end user try to enter record at same time then it shows an error. The error message shows the violation of primary key constrain.
NB: The two end user log in to the application with different user id and their records are also different. But they can't enter data at the same time.
Please help me out.