how to stop saving duplicate entry in SQL server please help. And show the message in C# winform this record already save.
Watch this video. Although it is Access database but will give you idea.http://www.programinurdu.com/2016/01/p10-c-access-database-tutorial-in-urdu.html
Change the text box values according to the combo box selection Value. Like ComboBox Value Select Cd : Auto Get The Price in Textbox. Sir how to create this function in c# winforms Application.