c# - 收到错误 'The process cannot access the file because it is being used by another process.'

Question

我收到一个错误:

The process cannot access the file 'E:\testing\check1.txt' because it is being used by another process.

这是我的代码:

private void timer2_Tick(object sender, EventArgs e)
{
    StreamWriter sw1 = new StreamWriter("E:\\testing\\check1.txt");
    sw1.Flush();
    if (dt[playback_iterator].iden == this.event_id)
    {

        foreach (Type type in asm1.GetTypes())
        {
            if (type.IsSubclassOf(typeof(System.Windows.Forms.Form)))
            {
                System.Windows.Forms.Form f = (System.Windows.Forms.Form)Activator.CreateInstance(type);
                foreach (Control ctrl in f.Controls)
                {
                    if (ctrl.Handle.ToInt32() == dt[playback_iterator].hndl)
                    {
                        if (ctrl.BackColor.R == this.r_comp && ctrl.BackColor.G == this.g_comp && ctrl.BackColor.G == this.g_comp)
                        {
                            sw1.WriteLine("verification point was set and the test passed");
                            /*success ob = new success();
                            ob.Show();*/
                        }
                        else
                        {
                            sw1.WriteLine("verification point test failed");
                        }

                    }
                }

            }
            sw1.Close();

            if (dt[playback_iterator].hndl == -1 && dt[playback_iterator].x == -1 && dt[playback_iterator].y == -1)
            {
                timer2.Enabled = false;
            }
            MoveMouse(dt[playback_iterator].hndl, dt[playback_iterator].x, dt[playback_iterator].y);
            if (dt[playback_iterator].click_detect.Equals("yes"))
            {
                ClickMouse(MonkeyButtons.btcLeft, dt[playback_iterator].x, dt[playback_iterator].y, 0, 0);
            }
            if (dt[playback_iterator].word != "")
            {
                ++count;
                StringBuilder wd = new StringBuilder(dt[playback_iterator].word);
                SetForegroundWindow(dt[playback_iterator].hndl);
                SendKeys.Send(dt[playback_iterator].word);
            }
            playback_iterator++;

        }
    }
}

Answer 1

您可以使用 using block 并写入文本文件

using (StreamWriter sw1 = new StreamWriter("E:\\testing\\check1.txt"))
{
    if (condition)
    {
        foreach (Type type in asm1.GetTypes())
        {
            if (contition)
            {
                sw1.WriteLine("verification point was set and the test passed");
            }
        }
    }