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刪除SQL數據庫中的行我有刪除SQL數據庫行下一次刪除的問題。 對於一日一次,它的工作正常,但第二次,我得到的錯誤味精(命令參數[1]是無效的)。在VB
我使用datagridview的用於選擇行(單/多),即我想刪除。 這是我的代碼:
Dim response As MsgBoxResult
Dim i As Integer
i = DataGridView1.CurrentRow.Index
If Not Trim(DataGridView1.Item("Group", i).Value.ToString) = "Admin" Then
response = MsgBox("Do you want remove this account ?" & vbNewLine & "Account : " & Trim(DataGridView1.Item("Name", i).Value.ToString), _
MsgBoxStyle.Question + MsgBoxStyle.YesNo, "Delete Data")
If response = MsgBoxResult.Yes Then
If Not MyConnection.State = ConnectionState.Open Then
MyConnection.Open()
End If
cmd.Connection = MyConnection
cmd.CommandText = "DELETE FROM t_User WHERE ID =?"
cmd.Parameters.AddWithValue("@row", 0)
For Each UserRow As DataGridViewRow In DataGridView1.SelectedRows
If Not MyConnection.State = ConnectionState.Open Then
MyConnection.Open()
End If
cmd.Connection = MyConnection
cmd.Parameters("@row").Value = UserRow.Cells("ID").Value
DataGridView1.Rows.Remove(UserRow)
cmd.ExecuteNonQuery()
DeleteColumns()
CreateColumns()
MyConnection.Close()
Next UserRow
Me.BackgroundWorker1.RunWorkerAsync()
End If
End If
請幫助我,你的幫助是極大的讚賞
我試圖擺在那裏,但問題是相同的當我試圖通過行刪除行/ –
儘量不要多行重新設置連接,刪除:cmd.Connection = MyConnection的 – Ezi
還是同樣的問題,當我刪除該行(cmd.Connection = MyConnection的) –