通過C＃DataGridView刪除數據庫行？

Question

在.NET 3.5 winforms應用程序中，我有一個DataGridView組件，它使用TableAdapter來連接MySQL數據庫。

我可以通過向BindingSource_AddingNew事件添加代碼來添加新記錄。

private void someBindingSource_AddingNew(object sender, AddingNewEventArgs e) 
{ 
    DataRow ThisDataRow = ((DataRowView)((BindingSource)sender).Current).Row; 
    if (ThisDataRow.RowState == DataRowState.Added) 
    { 
     someTableAdapter.Insert(ThisDataRow.ItemArray[1].ToString()); 
    } 
} 

我可以通過向BindingSource_CurrentItemChanged事件添加代碼來更新記錄。

private void someBindingSource_CurrentItemChanged(object sender, EventArgs e) 
{ 
    DataRow ThisDataRow = ((DataRowView)((BindingSource)sender).Current).Row; 
    if (ThisDataRow.RowState == DataRowState.Modified) 
    { 
     someTableAdapter.Update(ThisDataRow); 
    } 
} 

如何處理刪除事件？

**更新1 **

爲了應對加入一個按鈕刪除事件（你需要按下按鈕，前選擇行）：

private void btnDelete_Click(object sender, EventArgs e) 
    { 
     Int32 selectedRowCount = dataGridView1.Rows.GetRowCount(DataGridViewElementStates.Selected); 
     if (selectedRowCount > 0) 
     { 
      for (int i = 0; i < selectedRowCount; i++) 
      { 
        //delete from database 
        someTableAdapter.Delete(Convert.ToUInt16(dataGridView1.Rows[dataGridView1.SelectedRows[i].Index].Cells[0].Value)); 
        //refresh datagridview 
        this.dataGridView1.Rows.RemoveAt(this.dataGridView1.SelectedRows[i].Index); 

      } 
     } 

Answer 1

您正在尋找DataGridView.UserDeletingRow事件。

private void DataGridView1_UserDeletingRow(object sender, DataGridViewRowCancelEventArgs e) 
{ 
    // It is a cancellable event, you could cancel the delete on certain conditions. 
    e.Cancel = true; 

}