序列化和反序列化在C＃ [英] serialization and Deserialization in c#

问题描述

我面临的一个问题，而这样做的序列化和放大器;反序列化使用C＃。基本上我使用的DataContractSerializer序列化对象

I am facing a problem while doing serialization & deserialization using c#. Basically i am using DataContractSerializer to serialize an object.

下面是我的序列化代码：

Here is my serialization code:

 var serializer = new DataContractSerializer(typeof(ProjectSetup));
     string xmlString;
     using (var sw = new StringWriter())
         {
             using (var writer = new XmlTextWriter(sw))
                 {
                  writer.Formatting = Formatting.Indented;
                  serializer.WriteObject(writer, DALProjectSetup);
                  writer.Flush();
                  xmlString = sw.ToString();
                 }
          }                
      System.Web.HttpContext.Current.Session["ProjectSetup"] = xmlString;

这是正常工作，但现在我需要帮助如何反序列化上面。

This is working correctly but now I need help on how to deserialize the above.

推荐答案

瓦伦丁的回答显示了如何反序列化

Valentin's answer shows you how to deserialize.

回复您的评论：

我收到此错误：一开始只是类型的集合System.Collections.Hashtable'返回空值。输入流中包含如果实例为null，它不能添加采集项目。

i am getting this error: The get-only collection of type 'System.Collections.Hashtable' returned a null value. The input stream contains collection items which cannot be added if the instance is null.

（注意的HashTable 通常将是值得避免，太）

(note HashTable would generally be worth avoiding, too)

这是因为的DataContractSerializer 的不运行一个构造器的，所以如果你有：

That is because DataContractSerializer does not run a constructor, so if you have:

private readonly HashTable myData = new HashTable();
[DataMember]
public HashTable MyData { get { return myData; } }

或

private readonly HashTable myData;
[DataMember]
public HashTable MyData { get { return myData; } }
public MyType() {
    myData = new HashTable();
}

然后 myData的将总是空反序列化。有几个思路：

then myData will always be null for deserialization. A few ideas:

首先，尝试加入私人集;例如：

First, try adding a private set; for example:

[DataMember]
public HashTable MyData { get; private set; }
public MyType() {
    MyData = new HashTable();
}

否则，你可以使用之前，反序列化回调：

Otherwise, you could use a before-deserialization callback:

[OnDeserializing]
void OnSerializing(StreamingContext ctx) {
    myData = new HashTable();
}
private HashTable myData = new HashTable();
[DataMember]
public HashTable MyData { get { return myData; } }

或者：使物业更加智能化：

Or: make the property more intelligent:

private HashTable myData;
[DataMember]
public HashTable MyData { get { return myData ?? (myData = new HashTable()); } }

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