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将datagridview1中的行添加到datagridview2

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我有一个来自两个datagridviews . 我需要从数据库获取数据到datagridview1(使用Select * from database ...)然后我想使用Selected Rows将数据从datagriwview添加到datagridview2 .

首先我想解决这个问题以获得Selected Row的ID,当我在datagridview中选择它在datagridview2中显示时,但是当我选择另一行时,它在datagridview中更新,它不会添加为新行 . 我尝试了几种方法,但没有解决这个问题,有没有人帮我解决这个问题?谢谢

private void dataGridView1_CellDoubleClick_1(object sender, DataGridViewCellEventArgs e)
    {


        int id = Convert.ToInt32

  (dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells["id"].Value);//3

        try
        {

            MySqlConnection conn = new MySqlConnection(connection);
            MySqlCommand command = start.CreateCommand();
            command.CommandText = "SELECT id, muayine_adi, sabit_qiymet FROM tibbi_xidmetler  WHERE id = '" + id.ToString() + "'";

            conn.Open();
            MySqlDataAdapter oxu = new MySqlDataAdapter(command);
            DataTable dt = new DataTable();

                oxu.Fill(dt);
                dataGridView2.DataSource = dt;


        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }

3 回答

  • 0

    解释非常简单:每次双击datagridview1的单元格时,都会用新的数据表替换旧的数据表 . 如果你想追加结果,你可以这样做:

    MySqlConnection conn = new MySqlConnection(connection);
    MySqlCommand command = start.CreateCommand();
    command.CommandText = "SELECT id, muayine_adi, sabit_qiymet FROM tibbi_xidmetler  WHERE id = '" + id.ToString() + "'";
    conn.Open();
    MySqlDataAdapter oxu = new MySqlDataAdapter(command);
    DataTable dt = new DataTable();
    oxu.Fill(dt);
    if(dataGridView2.DataSource != null) {
        DataTable pr = dataGridView2.DataSource as DataTable;
        pr.Merge(dt);
        dataGridView2.DataSource = pr;
    }
    else
        dataGridView2.DataSource = dt;
    
  • 0

    由于您拥有datagridview1中的所有信息,因此您应该将所选行的内容复制到datagridrow2的新行中 .

    DataGridView基于包含DataTables的DataSet . DataTable包含行 . 您不能将一行从一个表移到另一个表 . 相反,您必须创建一个新行并插入到DataGridView2的DataTable中

  • 0
    private void dataGridView1_CellDoubleClick_1(object sender, DataGridViewCellEventArgs e)
            {
    
                    if (dataGridView1.CurrentRow.Cells["Id"].Value != null)
                    {
                        int Id = Convert.ToInt32(dataGridView1.CurrentRow.Cells["Id"].Value);
    
                        MySqlConnection start = new MySqlConnection(baglanti);
                        MySqlCommand command = start.CreateCommand();
                        command.CommandText = "SELECT id, muayine_adi, sabit_qiymet FROM tibbi_xidmetler  WHERE id = '" + Id + "'";
                        start.Open();
                        MySqlDataAdapter oxu = new MySqlDataAdapter(command);
                        DataTable dt = new DataTable();
                        oxu.Fill(dt);
                        if (dt != null && dt.Rows.Count > 0)
                        {
                            int idx = dataGridView2.Rows.Count - 1;
                            dataGridView2.Rows.Add(dt.Rows.Count);
                            for (int i = 0; i <= dt.Rows.Count - 1; i++)
                            {
                                int rVal = (idx + i) + 1;
                                dataGridView2.Rows[rVal].Cells["id"].Value = dt.Rows[i]["id"].ToString();
                                dataGridView2.Rows[rVal].Cells["muayine_adi"].Value = dt.Rows[i]["muayine_adi"].ToString();
                                dataGridView2.Rows[rVal].Cells["sabit_qiymet"].Value = dt.Rows[i]["sabit_qiymet"].ToString();
                            }
    
                        }
                        start.Close();
                    }
            }
    

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