   private void button1_Click(object sender, EventArgs e)
      {
         String strSql;
         strSql = "Select * from stTable";
         SqlDataAdapter da = new SqlDataAdapter(strSql, userControl11.connection);
         DataSet ds= new DataSet();
         da.Fill(ds, "stTable");
         DataGridView1.DataBindings.Add(new Binding("DataSource", ds, "stTable"));
         button1.Enabled = false;
      }
