Question

需要你的眼睛。

void testSave()
    {
        fileName = curMonth.Text + curYear.Text + ".csv";
        if (!File.Exists(path+fileName))
        {
            File.Create(path + fileName);
        }
        else if (File.Exists(path + fileName))
        {
         try
           {
               lines = curDate.Text + "," + myDesc.Text + "," + myAmount.Text;
                File.AppendAllText(path + fileName, lines + Environment.NewLine);
                TextWriter tw = new StreamWriter(path + fileName, true);
                tw.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }             
    }

错误如下：

该进程无法访问文件'C：\ Users ... \ File.csv'，因为它正由另一个进程使用。

我可以参考的任何建议或解决方案？谢谢

Answer 1

File.Create(path + fileName);未关闭，因此您无法重新开启。

如果需要，请删除else关键字。

void testSave()
{
    fileName = curMonth.Text + curYear.Text + ".csv";
    if (!File.Exists(path+fileName))
    {
        try
        {
            File.Create(path + fileName).Close();
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }

    try
    {
       lines = curDate.Text + "," + myDesc.Text + "," + myAmount.Text;
        File.AppendAllText(path + fileName, lines + Environment.NewLine);
        TextWriter tw = new StreamWriter(path + fileName, true);
        tw.Close();
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

保存文件错误

1 个答案: