我正在尝试保存 ObservableCollection
在 Windows Phone (Windows.Storage) 中使用新方法。我有以下类,它是我要保存的可观察集合的基础:
[DataContract]
class SettingsModel : INotifyPropertyChanged
{
public SettingsModel()
{ }
[DataMember]
private string _TargetIP {get; set;}
public string TargetIP
{
get
{
return _TargetIP;
}
set
{
_TargetIP = value;
NotifyPropertyChanged("TargetIP");
}
}
[DataMember]
private string _TargetADS { get; set; }
public string TargetADS
{
get
{
return _TargetADS;
}
set
{
_TargetADS = value;
NotifyPropertyChanged("TargetADS");
}
}
[DataMember]
private string _ClientIP { get; set; }
public string ClientIP
{
get
{
return _ClientIP;
}
set
{
_ClientIP = value;
NotifyPropertyChanged("ClientIP");
}
}
[DataMember]
private string _ClientADS { get; set; }
public string ClientADS
{
get
{
return _ClientADS;
}
set
{
_ClientADS = value;
NotifyPropertyChanged("ClientADS");
}
}
#region Notify property changed
public event PropertyChangedEventHandler PropertyChanged;
private void NotifyPropertyChanged(string propertyName)
{
if (this.PropertyChanged != null)
{
this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
#endregion
}
}
我保存可观察集合的代码是这样的:
public static async void SaveCollection<T>(string FileName, string FileExtension, ObservableCollection<T> Col) where T : class
{
// place file extension
FileName = FileName + "." + FileExtension;
// creating the file and replace the current file if the file allready exists
var file = await Windows.Storage.ApplicationData.Current.LocalFolder.CreateFileAsync
(FileName,
Windows.Storage.CreationCollisionOption.ReplaceExisting);
// openup a new stream to the file (write)
using (var Stream = await file.OpenStreamForWriteAsync())
{
// serialize the observable collection to a writable type
var DataSerializer = new DataContractSerializer(typeof(ObservableCollection<T>),
new Type[] { typeof(T) });
// write data
DataSerializer.WriteObject(Stream, Col);
}
}
静态的呼唤 SaveCollection<t>
方法:
StorageHandler.SaveCollection<SettingsModel>("TestData", "txt", Data);
其中Data是基于settingsModel
的集合.该调用在 SaveCollection
的最后一行给我一个错误方法。 dataserializer的错误:
An exception of type 'System.Security.SecurityException' occurred in System.Runtime.Serialization.ni.dll but was not handled in user code
Additional information: The collection data contract type 'System.Collections.ObjectModel.ObservableCollection`1[[WP_ADS.Model.SettingsModel, WP_ADS, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]' cannot be deserialized because it does not have a public parameterless constructor. Adding a public parameterless constructor will fix this error. Alternatively, you can make it internal, and use the InternalsVisibleToAttribute attribute on your assembly in order to enable serialization of internal members - see documentation for more details. Be aware that doing so has certain security implications.
知道如何解决这个问题吗?
(如错误所示,我已经尝试添加无参数构造函数,使构造函数成为内部构造函数,但都无济于事)。
最佳答案
不要忘记将您的类(class)设置为公开。
关于c# - WP8 上的 Windows.Storage 给我反序列化异常,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22779658/