MySQL / C＃提交DataGridView單元格編輯是否更改？

Question

我有一個包含5個dataGridViews的Form，並且需要能夠在單擊單元格時將對視圖所做的更改保存到View，類似於在Excel中的工作方式。

這是我的連接信息： public static MySqlConnection db = new MySqlConnection(); public string jobnumber = ""; public string str = "SERVER=192.168.1.149; DATABASE=starflitesystems; UID=iuapp; " + "Password=iuapp"; public static MySqlConnection db = new MySqlConnection(); public string jobnumber = ""; public string str = "SERVER=192.168.1.149; DATABASE=starflitesystems; UID=iuapp; " + "Password=iuapp";

我的表格公開代碼：

public frmPricingTemplate_Start(string s)
{
    InitializeComponent();

    createTempTable();

    setDGVQueries();

    hidePanels(pnlBasePackage);
    btnReset(btnBasePackage);

    this.WindowState                = FormWindowState.Maximized;

    jobnumber                       = s;
    txtJobNumber.Text               = s;
    comboBox1.Visible               = false;
    comboBox2.Visible               = false;
    dataGridRefresh();

    dg2.AutoSizeColumnsMode         = DataGridViewAutoSizeColumnsMode.Fill;
    dg3.AutoSizeColumnsMode         = DataGridViewAutoSizeColumnsMode.Fill;
    dg4.AutoSizeColumnsMode         = DataGridViewAutoSizeColumnsMode.Fill;
    dg5.AutoSizeColumnsMode         = DataGridViewAutoSizeColumnsMode.Fill;
}

我的數據庫查詢：

public void setDGVQueries()
{
    /* Strings for dataGridViews */
    selectDGV1 = "SELECT `Group`, Material, `Sub-Material` " +
                                            "FROM temporary_table " +
                                            "WHERE tab='" + activeTab + "';";

    selectDGV2 = "SELECT Quantity as `Quantity`, Cost as `Cost` " +
                                            "FROM temporary_table " +
                                            "WHERE tab='" + activeTab + "';";

    selectDGV3 = "SELECT Quantity2 as `Quantity`, Cost2 as `Cost` " +
                                            "FROM temporary_table " +
                                            "WHERE tab='" + activeTab + "';";

    selectDGV4 = "SELECT Quantity3 as `Quantity`, Cost3 as `Cost` " +
                                            "FROM temporary_table " +
                                            "WHERE tab='" + activeTab + "';";

    selectDGV5 = "SELECT Quantity as `Quantity`, Cost as `Cost` " +
                                            "FROM temporary_table " +
                                            "WHERE tab='" + activeTab + "';";
}

我的數據庫刷新功能：

public void dataGridRefresh()
{
    /* Define all dataTables for the dataGridViews */
    MySqlDataAdapter return1 = new MySqlDataAdapter(selectDGV1, str);
    DataTable dt1 = new DataTable("base");
    return1.Fill(dt1);

    MySqlDataAdapter return2 = new MySqlDataAdapter(selectDGV2, str);
    DataTable dt2 = new DataTable("base");
    return2.Fill(dt2);

    MySqlDataAdapter return3 = new MySqlDataAdapter(selectDGV3, str);
    DataTable dt3 = new DataTable("base");
    return3.Fill(dt3);

    MySqlDataAdapter return4 = new MySqlDataAdapter(selectDGV4, str);
    DataTable dt4 = new DataTable("base");
    return4.Fill(dt4);

    MySqlDataAdapter return5 = new MySqlDataAdapter(selectDGV5, str);
    DataTable dt5 = new DataTable("base");
    return5.Fill(dt5);

    /* Set DataSources for all datagridViews */
    dg1.DataSource = dt1;
    dg2.DataSource = dt2;
    dg3.DataSource = dt3;
    dg4.DataSource = dt4;
    dg5.DataSource = dt5;
}

基本上，這會將某些信息加載到我的dataGridViews中，但是現在，在加載數據之后，我需要能夠單擊一個單元格，對其進行編輯，並在焦點離開該單元格后自動將更改提交到表中。

我在網上查找了一些有關它的內容，但是它們似乎都使用了不同的方法來連接數據庫，因此我認為它們不會對我有用。

我的理論是我需要為每個塊使用d（在dg1.SelectedRows中的行r）{}，但是我不確定該怎么做。

任何幫助都將不勝感激。

Answer 1

您可以像這樣使用DataGridView.CellEnd Edit事件：

private void Form_Load(object sender, EventArgs e)
    { 
         myDataDridView.CellEndEdit += new DataGridViewCellEventHandler(myDataDridView_CellEndEdit);
    }

接着：

private void myDataDridView_CellEndEdit(object sender, DataGridViewCellEventArgs e)
    {
         try
         {
              // Your update query here
         }
         catch (Exception ex)
         {
              MessageBox.Show(ex.Message);
         }
    }