.net2.0中WebService在序列化xml数据Generic字典类型的问题

最近在公司代码中一个WEBSERVICE看到使用字典类型做为返回类型，如下：

[WebMethod]
publicIDictionary<string,string>UpdateThreadById(RequestThreadreqThread)....

.csharpcode,.csharpcodepre
{
font-size:small;
color:black;
font-family:consolas,"CourierNew",courier,monospace;
background-color:#ffffff;
/*white-space:pre;*/
}
.csharpcodepre{margin:0em;}
.csharpcode.rem{color:#008000;}
.csharpcode.kwrd{color:#0000ff;}
.csharpcode.str{color:#006080;}
.csharpcode.op{color:#0000c0;}
.csharpcode.preproc{color:#cc6633;}
.csharpcode.asp{background-color:#ffff00;}
.csharpcode.html{color:#800000;}
.csharpcode.attr{color:#ff0000;}
.csharpcode.alt
{
background-color:#f4f4f4;
width:100%;
margin:0em;
}
.csharpcode.lnum{color:#606060;}

DEBUG，出现下面的Exception:

CannotserializeinterfaceSystem.Collections.Generic.IDictionary`2[[System.String,mscorlib,Version=4.0.0.0,Culture=neutral,PublicKeyToken=b77a5c561934e089],[System.String,mscorlib,Version=4.0.0.0,Culture=neutral,PublicKeyToken=b77a5c561934e089]].

解决方法如下,增一个类型:

[XmlRoot("dictionary")]

publicclassSerializableDictionary<TKey,TValue>:Dictionary<TKey,TValue>,IXmlSerializable

{

#regionIXmlSerializableMembers

publicSystem.Xml.Schema.XmlSchemaGetSchema()

{

returnnull;

}

publicvoidReadXml(System.Xml.XmlReaderreader)

{

varkeySerializer=newXmlSerializer(typeof(TKey));

varvalueSerializer=newXmlSerializer(typeof(TValue));

boolwasEmpty=reader.IsEmptyElement;

reader.Read();

if(wasEmpty)

return;

while(reader.NodeType!=System.Xml.XmlNodeType.EndElement)

{

reader.ReadStartElement("item");

reader.ReadStartElement("key");

TKeykey=(TKey)keySerializer.Deserialize(reader);

reader.ReadEndElement();

reader.ReadStartElement("value");

TValuevalue=(TValue)valueSerializer.Deserialize(reader);

reader.ReadEndElement();

Add(key,value);

reader.ReadEndElement();

reader.MoveToContent();

}

reader.ReadEndElement();

}

publicvoidWriteXml(System.Xml.XmlWriterwriter)

{

varkeySerializer=newXmlSerializer(typeof(TKey));

varvalueSerializer=newXmlSerializer(typeof(TValue));

foreach(varkeyinthis.Keys)

{

writer.WriteStartElement("item");

writer.WriteStartElement("key");

keySerializer.Serialize(writer,key);

writer.WriteEndElement();

writer.WriteStartElement("value");

TValuevalue=this[key];

valueSerializer.Serialize(writer,value);

writer.WriteEndElement();

writer.WriteEndElement();

}

}

#endregion

}

.csharpcode,.csharpcodepre
{
font-size:small;
color:black;
font-family:consolas,"CourierNew",courier,monospace;
background-color:#ffffff;
/*white-space:pre;*/
}
.csharpcodepre{margin:0em;}
.csharpcode.rem{color:#008000;}
.csharpcode.kwrd{color:#0000ff;}
.csharpcode.str{color:#006080;}
.csharpcode.op{color:#0000c0;}
.csharpcode.preproc{color:#cc6633;}
.csharpcode.asp{background-color:#ffff00;}
.csharpcode.html{color:#800000;}
.csharpcode.attr{color:#ff0000;}
.csharpcode.alt
{
background-color:#f4f4f4;
width:100%;
margin:0em;
}
.csharpcode.lnum{color:#606060;}

好了，用个新的类型替换原来的，就可以了。

希望对您开发有帮助。

作者：PetterLiu
出处：http://www.cnblogs.com/wintersun/
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。
该文章也同时发布在我的独立博客中-PetterLiuBlog。