如何實現可以保存在“用戶設置”中的類？

Question

我有以下課程-

[Serializable]
public class SoundViewModel : INotifyPropertyChanged {

    public event PropertyChangedEventHandler PropertyChanged;

    public string Name { get; private set; }

    public SoundViewModel( string Name ) { this.Name = Name; }

    private FileInfo
        _RingIn = new FileInfo( "Sounds/RingIn.wav" ),
        _Correct = new FileInfo( "Sounds/Correct.wav" ),
        _Incorrect = new FileInfo( "Sounds/Incorrect.wav" ),
        _TimeOver = new FileInfo( "Sounds/TimeOver.wav" );

    public FileInfo RingIn {
        get { return this._RingIn; }
        set {
            this._RingIn = value;
            this.OnPropertyChanged( "RingIn" );
        }
    }

    public FileInfo Correct {
        get { return this._Correct; }
        set {
            this._Correct = value;
            this.OnPropertyChanged( "Correct" );
        }
    }

    public FileInfo Incorrect {
        get { return this._Incorrect; }
        set {
            this._Incorrect = value;
            this.OnPropertyChanged( "Incorrect" );
        }
    }

    public FileInfo TimeOver {
        get { return this._TimeOver; }
        set {
            this._TimeOver = value;
            this.OnPropertyChanged( "TimeOver" );
        }
    }

    private void OnPropertyChanged( string p ) {
        if ( this.PropertyChanged != null )
            this.PropertyChanged( this, new PropertyChangedEventArgs( p ) );
    }
}

我需要將此類保存到應用程序的“用戶設置”中，這就是為什么（請不要說“為什么不在用戶設置中為該類中的每個文件單獨創建一個FileInfo條目？”）：我需要保留51此類的單個條目（一個作為默認值，另外50個；每個玩家一個，並且我沒有在“設置”中輸入204個條目）。

我對如何制作一個可以序列化的類進行了快速搜索，我遇到的MSDN文章說

The easiest way to make a class serializable is to mark it with the Serializable attribute

顯然，這不是可以通過“簡便方法”完成的工作。

這是我在“用戶設置”類中擁有的該條目（以及這些條目的相應列表）的代碼-

XML-

<Setting Name="DefaultSounds" Type="EQLControls.Controls.SoundViewModel" Scope="User">
  <Value Profile="(Default)" />
</Setting>
<Setting Name="PlayerSounds" Type="System.Collections.ObjectModel.ObservableCollection&lt;EQLControls.Controls.SoundViewModel&gt;" Scope="User">
  <Value Profile="(Default)" />
</Setting>

C＃ -

[global::System.Configuration.UserScopedSettingAttribute()]
[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
public global::EQLControls.Controls.SoundViewModel DefaultSounds {
    get {
        return ((global::EQLControls.Controls.SoundViewModel)(this["DefaultSounds"]));
        }
    set {
        this["DefaultSounds"] = value;
    }
}

[global::System.Configuration.UserScopedSettingAttribute()]
[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
public global::System.Collections.ObjectModel.ObservableCollection<EQLControls.Controls.SoundViewModel> PlayerSounds {
    get {
        return ((global::System.Collections.ObjectModel.ObservableCollection<EQLControls.Controls.SoundViewModel>)(this["PlayerSounds"]));
    }
    set {
        this["PlayerSounds"] = value;
    }
}

如有必要，我可以提供更多詳細信息。

如何實現SoundViewModel類，以便在我調用Settings.Default.Save()保存設置？

另外-我發現的一個提示是，當我嘗試保存時，這就是我在“用戶設置”文件中看到的內容：

<EQLControls.Properties.Settings>
    <setting name="DefaultSounds" serializeAs="Xml">
        <value />
    </setting>
    <setting name="PlayerSounds" serializeAs="Xml">
        <value />
    </setting>
</EQLControls.Properties.Settings>

編輯

建議使用文件名而不是FileInfo對象。 我嘗試了一下，但是沒有用-（我將屬性保留為FileInfo並將其文件名存儲在變量中，作為第一步，接下來我將嘗試同時對這兩個字符串進行相同操作）。

public class SoundViewModel : INotifyPropertyChanged {

    public event PropertyChangedEventHandler PropertyChanged;

    public string Name { get; private set; }

    public SoundViewModel( string Name ) { this.Name = Name; }

    private string
        _RingIn = "Sounds/RingIn.wav",
        _Correct = "Sounds/Correct.wav",
        _Incorrect = "Sounds/Incorrect.wav",
        _TimeOver = "Sounds/TimeOver.wav";

    public FileInfo RingIn {
        get { return new FileInfo(this._RingIn ?? "Sounds/RingIn.wav"); }
        set {
            this._RingIn = value.FullName;
            this.OnPropertyChanged( "RingIn" );
        }
    }

    public FileInfo Correct {
        get { return new FileInfo(this._Correct ?? "Sounds/Correct.wav"); }
        set {
            this._Correct = value.FullName;
            this.OnPropertyChanged( "Correct" );
        }
    }

    public FileInfo Incorrect {
        get { return new FileInfo(this._Incorrect ?? "Sounds/Incorrect.wav"); }
        set {
            this._Incorrect = value.FullName;
            this.OnPropertyChanged( "Incorrect" );
        }
    }

    public FileInfo TimeOver {
        get { return new FileInfo(this._TimeOver ?? "Sounds/TimeOver.wav"); }
        set {
            this._TimeOver = value.FullName;
            this.OnPropertyChanged( "TimeOver" );
        }
    }

    private void OnPropertyChanged( string p ) {
        if ( this.PropertyChanged != null )
            this.PropertyChanged( this, new PropertyChangedEventArgs( p ) );
    }
}

編輯2

我刪除了FileInfo屬性，並替換為字符串：

public class SoundViewModel : INotifyPropertyChanged {

    public event PropertyChangedEventHandler PropertyChanged;

    public string Name { get; private set; }

    public SoundViewModel( string Name ) { this.Name = Name; }

    private string
        _RingIn = "Sounds/RingIn.wav",
        _Correct = "Sounds/Correct.wav",
        _Incorrect = "Sounds/Incorrect.wav",
        _TimeOver = "Sounds/TimeOver.wav";

    public string RingIn {
        get { return this._RingIn; }
        set {
            this._RingIn = value;
            this.OnPropertyChanged( "RingIn" );
        }
    }

    public string Correct {
        get { return this._Correct; }
        set {
            this._Correct = value;
            this.OnPropertyChanged( "Correct" );
        }
    }

    public string Incorrect {
        get { return this._Incorrect; }
        set {
            this._Incorrect = value;
            this.OnPropertyChanged( "Incorrect" );
        }
    }

    public string TimeOver {
        get { return this._TimeOver; }
        set {
            this._TimeOver = value;
            this.OnPropertyChanged( "TimeOver" );
        }
    }

    private void OnPropertyChanged( string p ) {
        if ( this.PropertyChanged != null )
            this.PropertyChanged( this, new PropertyChangedEventArgs( p ) );
    }
}

仍然沒有愛，保存的user.config文件是貧乏的。

<EQLControls.Properties.Settings>
    <setting name="PlayerSounds" serializeAs="Xml">
        <value />
    </setting>
</EQLControls.Properties.Settings>

Answer 1

SoundViewModel需要反序列化的無參數構造函數。 僅公共屬性將被序列化。 您可以使用[XmlIgnore]跳過屬性。

您也不能在用戶設置中保存通用類型（在您的情況下為Observable<T> ）。 雖然有一個簡單的解決方法，但我經常使用字典來解決。

[Serializable]
public class MySerializableCollection : List<SoundViewModel>{}