c＃在DataGridView中使用ComboBox修改Mysql中的单元格

Question

我是新手，我需要详细的答复，对不起我的英语不好。。。我会尽力向自己解释一下。.我在Mysql中有2个表

 table1:  id_ticket , ticket_description, ticket_status(id_status)         
 table2 :    id_statu , status_name

在我的应用程序中，我使用table1内的所有信息来填充DataGridView，还添加了一个comboBox列，组合框显示table2中的“ status_name”，我想使用comboBox中包含的信息来修改ticket_status，我该怎么办那？

这是我的代码：

public void CreateAssignedToMe(string ConnString)
    {
        string assignedTo = textBoxUid.Text;
        string query = "SELECT * FROM reports WHERE ticket_assignee='"+assignedTo+"' AND ticket_resolution < 3;";

        AssignToMe = new AssignedToMe();
        AssignToMe.ConnString = ConnString;
        DataGridView dgvReports = AssignToMe.dataGridViewAssignedToMe;

        try
        {
            MySqlConnection conn = new MySqlConnection(ConnString);
            conn.Open();
            MySqlDataAdapter daUsers = new MySqlDataAdapter(query,ConnString);
            DataSet dsUsers = new DataSet();
            daUsers.Fill(dsUsers,"report");
            dgvReports.DataSource = dsUsers;
            dgvReports.DataMember = "report";
            dgvReports.AllowUserToAddRows = false;
            dgvReports.AllowUserToDeleteRows = false;
            dgvReports.Columns["ticket_departmentResponsive"].Visible = false;
            dgvReports.Columns["ticket_assignee"].Visible = false;


                string queryStatus = "SELECT * FROM status";
                MySqlDataAdapter daStatus = new MySqlDataAdapter(queryStatus, ConnString);                  
                DataSet dsStatus = new DataSet();
                MySqlCommandBuilder builder = new MySqlCommandBuilder(daStatus);
                daStatus.Fill(dsStatus, "Resolution");

                daStatus.UpdateCommand = builder.GetUpdateCommand();

                DataGridViewComboBoxColumn cbbox = new DataGridViewComboBoxColumn();
                BindingSource StatusBindingSource = new BindingSource();
                StatusBindingSource.DataSource = dsStatus;
                StatusBindingSource.DataMember = "Resolution";
                cbbox.HeaderText = "Resolution";
                cbbox.DropDownWidth = 90;
                cbbox.DataSource = StatusBindingSource;
                cbbox.DisplayMember = "status_name";
                dgvReports.Columns.Add(cbbox);



            AssignToMe.ShowDialog();

        }
        catch(MySqlException ex)
        {
            MessageBox.Show(ex.Message.ToString());
        }

}

我无法发布图片:(

Answer 1

您必须添加DataGridView.CellValueChanged Event 。 更改任何单元格值时，将执行分配给该事件的功能。

// adding event handler (somewhere after dgvReports initialization)
dgvReports.CellValueChanged += new DataGridViewCellEventHandler(dgvReports_CellValueChanged);

// function that handles event
private void dgvReports_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
    // `e` argument will contain e.RowIndex and e.ColumnIndex properties
    // they may be used to determine which particular cell was changed

}

在事件处理程序中，您应该检查更改了哪些列/单元格（行和单元格索引应通过DataGridViewCellEventArgs e参数传递给处理CellValueChanged事件的方法）。

检查之后-您应该“进行更新”。