Question

我收到此错误未处理的类型＆＃39; System.StackOverflowException＆＃39;发生在mscorlib.dll 我知道你不应该有一个无限循环，但它不是一个无限循环，因为它只是去了它，直到它得到一个尚未制作的文件号。我怎样才能更好地解决这个问题？

private int x = 0;
public string clients = @"F:\Internal Jobs\Therm-Air Files\Program\P-1-2.0\Clients\";
public string tdate = DateTime.Today.ToString("MM-dd-yy");

public void saveloop()
{
    string path = LoadPO.Text.Substring(0, LoadPO.Text.LastIndexOf("\\"));
    string name = Path.GetFileName(path);
    string t = Convert.ToString(x);

    if (!File.Exists(path + @"\" + name + ".xlsx")) // This Line throws error
    {
        oSheet.SaveAs(path + @"\" + name + "-" + t + ".xlsx");
        string prop = /* snipped for space reasons, just string concats */

        string Combine = string.Empty;
        int b = 0;
        int c = cf.cPanel.Controls.Count;
        string[] items = new string[c];
        foreach (WProduct ewp in cf.cPanel.Controls)
        {
            string item = /* snipped for space reasons, just string concats */
            items[b] = item;
            b += 1;
        }
        Combine = prop + "^<";
        foreach (var strings in items)
        {
            Combine += strings + "<";
        }

        File.WriteAllText(path + @"\" + name + ".txt", Combine);
    }
    else
    {
        x += 1;
        saveloop();

    }

Answer 1

上面代码失败的原因是因为你没有在文件名中使用i，所以你可以增加你想要的所有内容而不改变名称。

您需要从执行编写的代码中抽象出文件名的创建。可以把它想象成在功能块中编写代码。

public static string GetFileName(string path, string name)
{
    var fileName = $@"{path}\{name}.xlsx";
    int i = 0;
    while (System.IO.File.Exists(fileName))
    {
        i++;
        fileName = $@"{path}\{name}({i}).xlsx";
    }
    return fileName;
}


public void saveloop()
{
    var fileName = GetFileName(path, name);
    // use fileName from this point on
}

获取System.StackOverflowException＆＃39;错误

1 个答案: