如何序列化和反序列化词典<;字符串,对象>;在WinRT中(C#和XAML中的Metro应用程序)?
这几天来我一直在努力解决这个愚蠢的问题,这让我头痛不已。如果有人有一个有效的例子,我会非常高兴,因为到目前为止我发现的那些例子都不起作用:( 我可以序列化基本类型,但不能序列化对象。对于DataContractAttribute等,我非常困惑。我得到的错误是: {“Type”序列化ListWinrt.DataModel.LocalStorage+Cat的数据 合同名称 'LocalStorage.Cat:http://schemas.datacontract.org/2004/07/SerializeListWinRT.DataModel' 不期望。请考虑使用DATACONTracTracever或添加任何 已知类型列表中静态未知的类型-例如, 通过使用KnownTypeAttribute属性或将其添加到 传递给DataContractSerializer的已知类型列表。“}如何序列化和反序列化词典<;字符串,对象>;在WinRT中(C#和XAML中的Metro应用程序)?,c#,windows-runtime,C#,Windows Runtime,这几天来我一直在努力解决这个愚蠢的问题,这让我头痛不已。如果有人有一个有效的例子,我会非常高兴,因为到目前为止我发现的那些例子都不起作用:( 我可以序列化基本类型,但不能序列化对象。对于DataContractAttribute等,我非常困惑。我得到的错误是: {“Type”序列化ListWinrt.DataModel.LocalStorage+Cat的数据 合同名称 'LocalStorage.Cat:http://schemas.datacontract.org/2004/07/Serial
使用系统;
使用System.Collections.Generic;
使用System.Linq;
使用系统文本;
使用System.Threading.Tasks;
使用Windows.Storage;
使用System.IO;
使用System.Runtime.Serialization;
使用Windows.Storage.Streams;
命名空间序列化ListWinrt.DataModel
{
类本地存储
{
[DataContractAttribute]
公猫
{
[DataMember()]
公共字符串名称{get;set;}
}
静态专用字典_data=new Dictionary();
private const string filename=“items.xml”;
静态公共字典数据
{
获取{return_data;}
}
静态公共T GetItem(字符串键)
{
T结果=默认值(T);
如果(_data.ContainsKey(键))
{
结果=(T)u数据[键];
}
返回结果;
}
静态公共bool ContainsItem(字符串键)
{
返回_data.ContainsKey(键);
}
静态异步公共任务保存()
{
等待Windows.System.Threading.ThreadPool.RunAsync((发送方)=>
{
LocalStorage.SaveAsync().Wait();
},Windows.System.Threading.worktempriority.Normal);
}
静态异步公共任务还原()
{
等待Windows.System.Threading.ThreadPool.RunAsync((发送方)=>
{
LocalStorage.RestoreAsync().Wait();
},Windows.System.Threading.worktempriority.Normal);
}
静态异步专用任务SaveAsync()
{
_data.Add(“cat”,新的cat{Name=“Myname is”});
_data.Add(“dog”,新的Cat{Name=“Myname is”});
StorageFile sessionFile=await ApplicationData.Current.LocalFolder.CreateFileAsync(文件名,CreationCollisionOption.ReplaceExisting);
irandomaccesstream sessionRandomAccess=wait sessionFile.OpenAsync(FileAccessMode.ReadWrite);
IOOutputStream sessionOutputStream=sessionRandomAccess.GetOutputStreamAt(0);
DataContractSerializer sessionSerializer=新的DataContractSerializer(typeof(Dictionary));
sessionSerializer.WriteObject(sessionOutputStream.AsStreamForWrite(),_数据);
等待sessionOutputStream.FlushAsync();
}
静态异步专用任务RestoreAsync()
{
StorageFile sessionFile=await ApplicationData.Current.LocalFolder.CreateFileAsync(文件名,CreationCollisionOption.OpenIfExists);
if(sessionFile==null)
{
返回;
}
IIInputStream sessionInputStream=等待sessionFile.OpenReadAsync();
DataContractSerializer sessionSerializer=新的DataContractSerializer(typeof(Dictionary));
_数据=(字典)sessionSerializer.ReadObject(sessionInputStream.AsStreamForRead());
}
}
}
我是如何解决问题的:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Windows.Storage;
using System.IO;
using System.Runtime.Serialization;
using Windows.Storage.Streams;
namespace SerializeListWinRT.DataModel
{
class LocalStorage
{
[KnownType(typeof(SerializeListWinRT.Cat))]
[DataContractAttribute]
public class Cat
{
[DataMember()]
public String Name { get; set; }
}
static private Dictionary<string, object> _data = new Dictionary<string, object>();
private const string filename = "ngt.xml";
static public Dictionary<string, object> Data
{
get { return _data; }
}
static public T GetItem<T>(string key)
{
T result = default(T);
if (_data.ContainsKey(key))
{
result = (T)_data[key];
}
return result;
}
static public bool ContainsItem(string key)
{
return _data.ContainsKey(key);
}
static async public Task Save<T>()
{
await Windows.System.Threading.ThreadPool.RunAsync((sender) =>
{
LocalStorage.SaveAsync<T>().Wait();
}, Windows.System.Threading.WorkItemPriority.Normal);
}
static async public Task Restore<T>()
{
await Windows.System.Threading.ThreadPool.RunAsync((sender) =>
{
LocalStorage.RestoreAsync<T>().Wait();
}, Windows.System.Threading.WorkItemPriority.Normal);
}
static async private Task SaveAsync<T>()
{
_data.Add("cat", new Cat { Name = "Myname is" });
_data.Add("dog", new Cat { Name = "Myname is" });
StorageFile sessionFile = await ApplicationData.Current.LocalFolder.CreateFileAsync(filename, CreationCollisionOption.ReplaceExisting);
IRandomAccessStream sessionRandomAccess = await sessionFile.OpenAsync(FileAccessMode.ReadWrite);
IOutputStream sessionOutputStream = sessionRandomAccess.GetOutputStreamAt(0);
DataContractSerializer sessionSerializer = new DataContractSerializer(typeof(Dictionary<string, object>), new Type[] { typeof(T) });
sessionSerializer.WriteObject(sessionOutputStream.AsStreamForWrite(), _data);
await sessionOutputStream.FlushAsync();
}
static async private Task RestoreAsync<T>()
{
StorageFile sessionFile = await ApplicationData.Current.LocalFolder.CreateFileAsync(filename, CreationCollisionOption.OpenIfExists);
if (sessionFile == null)
{
return;
}
IInputStream sessionInputStream = await sessionFile.OpenReadAsync();
DataContractSerializer sessionSerializer = new DataContractSerializer(typeof(Dictionary<string, object>), new Type[] { typeof(T) });
_data = (Dictionary<string, object>)sessionSerializer.ReadObject(sessionInputStream.AsStreamForRead());
}
}
使用系统;
使用System.Collections.Generic;
使用System.Linq;
使用系统文本;
使用System.Threading.Tasks;
使用Windows.Storage;
使用System.IO;
使用System.Runtime.Serialization;
使用Windows.Storage.Streams;
命名空间序列化ListWinrt.DataModel
{
类本地存储
{
[KnownType(typeof(SerializeListWinRT.Cat))]
[DataContractAttribute]
公猫
{
[DataMember()]
公共字符串名称{get;set;}
}
静态专用字典_data=new Dictionary();
私有常量字符串filename=“ngt.xml”;
静态公共字典数据
{
获取{return_data;}
}
静态公共T GetItem(字符串键)
{
T结果=默认值(T);
如果(_data.ContainsKey(键))
{
结果=(T)u数据[键];
}
返回结果;
}
静态公共bool ContainsItem(字符串键)
{
返回_data.ContainsKey(键);
}
静态异步公共任务保存()
{
等待Windows.System.Threading.ThreadPool.RunAsync((发送方)=>
{
LocalStorage.SaveAsync().Wait();
},Windows.System.Threading.worktempriority.Normal);
}
静态异步公共任务还原()
{
等待Windows.System.Threading.ThreadPool.RunAsync((发送方)=>
{
LocalStorage.RestoreAsync().Wait();
},Windows.System.Threading.worktempriority.Normal);
}
静态异步专用任务SaveAsync()
{
_data.Add(“cat”,新的cat{Name=“Myname is”});
_data.Add(“dog”,新的Cat{Name=“Myname is”});
StorageFile sessionFile=await ApplicationData.Current.LocalFolder.CreateFileAsync(文件名,CreationCollisionOption.ReplaceExisting);
irandomaccesstream sessionRandomAccess=wait sessionFile.OpenAsync(FileAccessMode.ReadWrite);
IOOutputStream sessionOutputStream=sessionRandomAccess.GetOutputStreamAt(0);
DataContractSerializer sessionSerializer=新的DataContractSerializer(typeof(Dictionary),新类型[]{typeof(T)});
sessionSerializer.WriteObject(sessionOutputStream.AsStreamForWri
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Windows.Storage;
using System.IO;
using System.Runtime.Serialization;
using Windows.Storage.Streams;
namespace SerializeListWinRT.DataModel
{
class LocalStorage
{
[KnownType(typeof(SerializeListWinRT.Cat))]
[DataContractAttribute]
public class Cat
{
[DataMember()]
public String Name { get; set; }
}
static private Dictionary<string, object> _data = new Dictionary<string, object>();
private const string filename = "ngt.xml";
static public Dictionary<string, object> Data
{
get { return _data; }
}
static public T GetItem<T>(string key)
{
T result = default(T);
if (_data.ContainsKey(key))
{
result = (T)_data[key];
}
return result;
}
static public bool ContainsItem(string key)
{
return _data.ContainsKey(key);
}
static async public Task Save<T>()
{
await Windows.System.Threading.ThreadPool.RunAsync((sender) =>
{
LocalStorage.SaveAsync<T>().Wait();
}, Windows.System.Threading.WorkItemPriority.Normal);
}
static async public Task Restore<T>()
{
await Windows.System.Threading.ThreadPool.RunAsync((sender) =>
{
LocalStorage.RestoreAsync<T>().Wait();
}, Windows.System.Threading.WorkItemPriority.Normal);
}
static async private Task SaveAsync<T>()
{
_data.Add("cat", new Cat { Name = "Myname is" });
_data.Add("dog", new Cat { Name = "Myname is" });
StorageFile sessionFile = await ApplicationData.Current.LocalFolder.CreateFileAsync(filename, CreationCollisionOption.ReplaceExisting);
IRandomAccessStream sessionRandomAccess = await sessionFile.OpenAsync(FileAccessMode.ReadWrite);
IOutputStream sessionOutputStream = sessionRandomAccess.GetOutputStreamAt(0);
DataContractSerializer sessionSerializer = new DataContractSerializer(typeof(Dictionary<string, object>), new Type[] { typeof(T) });
sessionSerializer.WriteObject(sessionOutputStream.AsStreamForWrite(), _data);
await sessionOutputStream.FlushAsync();
}
static async private Task RestoreAsync<T>()
{
StorageFile sessionFile = await ApplicationData.Current.LocalFolder.CreateFileAsync(filename, CreationCollisionOption.OpenIfExists);
if (sessionFile == null)
{
return;
}
IInputStream sessionInputStream = await sessionFile.OpenReadAsync();
DataContractSerializer sessionSerializer = new DataContractSerializer(typeof(Dictionary<string, object>), new Type[] { typeof(T) });
_data = (Dictionary<string, object>)sessionSerializer.ReadObject(sessionInputStream.AsStreamForRead());
}
}
[KnownType(typeof(SerializeListWinRT.Cat))]