从数据库获取价值并添加它的价值？

Question

我有一个DataGridView，我打电话从phpMyAdmin的价值观和我尝试添加它的价值行，但是当我编辑的细胞1它得到相同的值

 MySqlConnection conn = new MySqlConnection("datasource=localhost;port = 3306;username = root;password = "); 
     MySqlCommand comm = new MySqlCommand("select Fee,Amount from system.other_school_fees ;", conn); 

      MySqlDataAdapter ssda = new MySqlDataAdapter(); 
      ssda.SelectCommand = comm; 
      DataTable ddbdataset = new DataTable(); 
      ssda.Fill(ddbdataset); 
      BindingSource bbsource = new BindingSource(); 

      bbsource.DataSource = ddbdataset; 
      dataGridView2.DataSource = bbsource; 
      ssda.Update(ddbdataset); 
      dataGridView2.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells; 

      int d = 0; 
      for (int b = 0; b < dataGridView2.Rows.Count; b++) 
      { 
       d += Convert.ToInt32(dataGridView2.Rows[b].Cells[1].Value); 
      } 

      lblOSF.Text = d.ToString(); 

Answer 1

解决了！

private int CellSum() 
    { 
       string a = string.Empty; 
      int sum = 0; 
      for (int b = 0; b < dataGridView1.Rows.Count; ++b) 
      { 
       try 
       { 
        int d = 0; 
        d += Convert.ToInt32(dataGridView1.Rows[b].Cells[1].Value); 
        sum += d; 
       } 
       catch 
       { 
        MySqlConnection conn = new MySqlConnection("datasource=localhost;port = 3306;username = root;password = "); 
        MySqlCommand comm = new MySqlCommand("select Miscellaneous_Fee,Amount from system.miscellaneoues;", conn); 

        MySqlDataAdapter ssda = new MySqlDataAdapter(); 
        ssda.SelectCommand = comm; 
        DataTable ddbdataset = new DataTable(); 
        ssda.Fill(ddbdataset); 
        BindingSource bbsource = new BindingSource(); 

        bbsource.DataSource = ddbdataset; 
        dataGridView1.DataSource = bbsource; 
        ssda.Update(ddbdataset); 
        dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells; 

        MessageBox.Show("Incorrect Input"); 
       } 

      } 
      return sum;  

    } 

private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e) 
    { 

     if (e.ColumnIndex == 1) 
      lblMiscellaneous.Text = CellSum().ToString(); 
    }