protected void btninsert_Click(object sender, EventArgs e) { string str = "Data Source=desktop-tb3r1mj;Initial Catalog=nibl;Integrated Security=True"; connectdb.Class1 db = new connectdb.Class1(str); if (db.connect() == true) { string sql = "insert into niblbranch(sol,branch) values(3,'BIRGUNJ')"; db.Insert(sql); } else { Response.Write("Not able to connect to database!"); } }