Question

当我的Wpf应用程序启动时，我在Settings.Designer.cs中收到BindingFailureException

[global::System.Configuration.UserScopedSettingAttribute()]
    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
    public global::System.Collections.Specialized.StringCollection Projects {
        get {
            return ((global::System.Collections.Specialized.StringCollection)(this["Projects"]));
        }
        set {
            this["Projects"] = value;
        }
    }

使用以下消息：

The assembly with display name 'System.XmlSerializers' failed to load in the 'LoadFrom' binding context of the AppDomain with ID 1. The cause of the failure was: System.IO.FileNotFoundException: Could not load file or assembly 'System.XmlSerializers, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. The system cannot find the file specified.

在我的MainWindow代码背后，我在window_loaded上执行以下操作：

try
        {
          if (Properties.Settings.Default.Projects==null)
            Properties.Settings.Default.Projects=new StringCollection( );
        var removalList = new List<string>( );
        foreach (string project in Properties.Settings.Default.Projects)
        {
            if (System.IO.File.Exists(project))
                OpenProject(project);
            else
            {
                removalList.Add(project);
            }

        }
        foreach (string missingProject in removalList) //so that we are not removing an item while iterating
        {
            Properties.Settings.Default.Projects.Remove(missingProject);
        }
            }
        catch (Exception ex)
        {
            Debug.WriteLine(ex.ToString( ));
        }

同样在window_closing

try
            {
                //TODO: save prompt
                Properties.Settings.Default.Save( );
            }
            catch (Exception ex)
            {

                Debug.WriteLine(ex.ToString( ));
            }

这也引发了同样的异常。为什么我会在访问Properties.Settings时遇到异常？

Answer 1

在我的经历中，这种例外并不是那么不寻常。什么不寻常的是，在您的情况下（显然）未处理异常。通常，（根据我的经验），异常会被其他机制静默捕获和处理。

你有可能在VS调试器中使用'抛出异常时中断'来运行它吗？该设置在Debug - ＆gt;下。例外......顺便说一句。

WPF Properties.Settings在启动和关闭时抛出异常

1 个答案: