Inserting a data into dataset by using C#.net

 SqlConnection conn = null;
 SqlDataReader rdr = null;

 // create and open a connection object
 conn = new
     SqlConnection(@"Server=MDT765\MDT765;DataBase=TST;user=user;password=user@123;Integrated Security=SSPI");
 conn.Open();

string myConnection = conn.ConnectionString.ToString();//"Data Source=MDT765;Initial Catalog=TST;User Id=user;Password=user@123;";
 SqlDataAdapter sqlcom0 = new SqlDataAdapter("SELECT * FROM Employee", myConnection);
 DataSet ds0 = new DataSet();
 sqlcom0.Fill(ds0);
 dataGridView1.DataSource = ds0.Tables[0].DefaultView;
 dataGridView1.Databind()
 dataGridView1.Refresh();