How to view,insert,update,delete gridview in c# 4 tier architecture

Insert, Update, Search and Delete (CRUD operation) using ASP.Net and MySQL

If your using Database table bind the GridView's DataSource to Table

GridView1.DataSource = table;

If you need to add it manually.use below code

this.GridView1.Rows.Add();
this.GridView1.Rows[rowIndex].Cells[columnIndex].Value = " ";
this.GridView1.Rows[rowIndex].Cells[columnIndex].Value = " ";

For Updating and Refreching the Gid.:

GridView1.update();
GridView1.refresh();