Question

我有一个在测试和应用程序开发期间工作正常的应用程序，但是当我在外部系统中构建和安装应用程序时，它可以工作，然后在创建新窗口时抛出异常。这是表单的构造函数代码和Load事件

 public VoucherForm(int transactionId)
        {

            InitializeComponent();

            _voucherTransactionId = transactionId;
            _settingService = new SettingService();
            _transactionService = new TransactionService();
            _voucherController = new PaymentVoucherController();

        }

 private void VoucherForm_Load(object sender, EventArgs e)
        {
            _panelWidth = voucherPanel.Width;

            _paymentVoucher = PaymentVoucherController.GetPaymentVoucher;

            if (_paymentVoucher == null)
            {
                var voucher = _voucherController
                    .ReloadVoucher(_voucherTransactionId);

                if (voucher == null)
                {
                    const string msg = "Cannot display voucher.";
                MessageBox.Show(msg, Resources.ActionNotSuccessful,
                    MessageBoxButtons.OK, MessageBoxIcon.Error);

                this.Close();
                }
                _paymentVoucher = voucher;
            }

            LoadVoucherTitles();

            //Load payment voucher
            LoadPaymentVoucher();
        }

这是抛出异常并关闭时的堆栈跟踪。

The process was terminated due to an unhandled exception.
Exception Info: System.IO.DirectoryNotFoundException
Stack:
   at System.IO.__Error.WinIOError(Int32, System.String)
   at System.IO.FileStream.Init(System.String, System.IO.FileMode, System.IO.FileAccess, Int32, Boolean, System.IO.FileShare, Int32, System.IO.FileOptions, SECURITY_ATTRIBUTES, System.String, Boolean, Boolean, Boolean)
   at System.IO.FileStream..ctor(System.String, System.IO.FileMode, System.IO.FileAccess, System.IO.FileShare, Int32)
   at PPSMB.UI.Common.ExceptionHandler.Handle(System.Exception)
   at PPSMB.UI.MainForm.Application_ThreadException(System.Object, System.Threading.ThreadExceptionEventArgs)
   at System.Windows.Forms.Application+ThreadContext.OnThreadException(System.Exception)
   at System.Windows.Forms.Control.WndProcException(System.Exception)
   at System.Windows.Forms.Control+ControlNativeWindow.OnThreadException(System.Exception)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr, Int32, IntPtr, IntPtr)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG ByRef)
   at System.Windows.Forms.Application+ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr, Int32, Int32)
   at System.Windows.Forms.Application+ThreadContext.RunMessageLoopInner(Int32, System.Windows.Forms.ApplicationContext)
   at System.Windows.Forms.Application+ThreadContext.RunMessageLoop(Int32, System.Windows.Forms.ApplicationContext)
   at System.Windows.Forms.Application.Run(System.Windows.Forms.Form)
   at PPSMB.UI.Program.Main()

在时间限制下，我们将非常感谢您对这些例外原因的任何帮助。

修改

这是句柄方法

public static void Handle(Exception exception)
        {
            var documentsPath = Environment
                .GetFolderPath(Environment.SpecialFolder.ApplicationData);

            var exceptionString = exception.ToString();

            documentsPath = Path.Combine(documentsPath, "Ppsmb");

            if (!Directory.Exists(documentsPath))
            {
                Directory.CreateDirectory(documentsPath);
            }
            var fileName = Path.GetRandomFileName();
            var erorPath = Path.Combine(documentsPath, "{0}_error.txt", fileName);

            erorPath = Path.Combine(documentsPath, erorPath);

            FileStream stream = null;
            if (!File.Exists(erorPath))
            {
                stream = File.Create(erorPath);
            }
            else
            {
                stream = File.OpenWrite(documentsPath);
            }

            using (var strStream = new StreamWriter(stream))
            {
                strStream.WriteLine(exceptionString);
                strStream.Flush();
                strStream.Close();
                stream.Close();
            }
        }

此方法由

调用

 private static void Application_ThreadException(object sender, ThreadExceptionEventArgs args)
        {
            const string exceptionMsg = "An error has occured!, " +
                                        "please close the application and " +
                                        "restart it again.";

            Exception exception = args.Exception;
            ExceptionHandler.Handle(exception);

            DialogResult dialogResult = MessageBox.Show(exceptionMsg, "ERROR!",
                MessageBoxButtons.OK, MessageBoxIcon.Error);

            if (dialogResult == DialogResult.OK)
            {
                Application.Exit();
            }
        }

Answer 1

我对这两行代码感到好奇：

var erorPath = Path.Combine(documentsPath, "{0}_error.txt", fileName);
erorPath = Path.Combine(documentsPath, erorPath);

我认为这会导致您的错误，正如Matthew指出的那样，隐藏了另一个错误。

尝试将这两行改为此单词：

var erorPath = Path.Combine(documentsPath, string.Format("{0}_error.txt", filename));

Answer 2

您正在尝试创建文档文件夹（如果该文件夹不存在）。以管理员身份运行您的应用。

Answer 3

请检查您的文件夹/目录权限。如果没有为所有用户提供所有必要的读取，写入等权限。

如何在安装在客户端计算机

3 个答案: