How to Delete and Retrieve Data in C# and SQL Server 2005


deleteandretrieveSQLOPIThis time, I will teach you how to delete and retrieve the data in and SQL server 2005. Deleting records are not advisable to a system, however, in developing a system, you have to put a “delete” method so that, it will be easy for you to remove whatever data that you have saved in the database for the input testing.


So, let’s get started:


  • Create a database and name it “testdb”.
  • Open Microsoft Visual Studio 2008 and create new Windows Form Application.
  • Do the Form as follows.


  • Go to the Solution Explorer, click the “View Code”  to display the code editor.


  • Declare all the classes and variable that are needed.

Note: Put using System.Data.SqlClient; above the namespace to access sql server library.

  • Go back to the design view, double-click the Form and do the following codes for the connection between C# and SQL server.
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  • Create a method for retrieving the records in the database to the DataGridView.

  • Go back to the design view, double-click a button and do the following codes for deleting the records in the SQL database.





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