我的NetDataContractSerializer似乎很混乱:XML的结尾出现了两次:
<?xml version="1.0" encoding="utf-8"?>
<Project xmlns:i="http://www.w3.org/2001/XMLSchema-instance" z:Id="1"
[...]
<d2p1:anyType i:nil="true" />
</d2p1:_items>
<d2p1:_size>2</d2p1:_size>
<d2p1:_version>2</d2p1:_version>
</d2p1:items>
</ProjectParts>
<ProjectPath z:Id="31">D:\t10\</ProjectPath>
</Project>ze>
<d2p1:_version>3</d2p1:_version>
</d2p1:items>
<d2p1:_monitor xmlns:d7p1="http://schemas.datacontract.org/2004/07/System.Collections.ObjectModel" z:Id="33">
<d7p1:_busyCount>0</d7p1:_busyCount>
</d2p1:_monitor>
</Elements>
<Project z:Ref="1" i:nil="true" xmlns="http://schemas.datacontract.org/2004/07/Modules.WorkspaceManager.Types" />
</d2p1:anyType>
<d2p1:anyType i:nil="true" />
<d2p1:anyType i:nil="true" />
</d2p1:_items>
<d2p1:_size>2</d2p1:_size>
<d2p1:_version>2</d2p1:_version>
</d2p1:items>
</ProjectParts>
<ProjectPath z:Id="34">D:\t10\</ProjectPath>
</Project>
正如你所看到的,有一些严重的口吃。它偶尔发生,我无法重现错误。有任何想法吗?可能是因为在写入文件时在VS中打开了文件吗?
我像这样序列化我的对象:
private void SerializeToFile(object objectToSerialize)
{
Stream stream = null;
try
{
stream = File.Open(_fileName, FileMode.OpenOrCreate, FileAccess.Write);
using (var writer = XmlWriter.Create(stream, new XmlWriterSettings { Indent = true }))
{
NetDataContractSerializer serializer = new NetDataContractSerializer();
serializer.WriteObject(writer, objectToSerialize);
}
}
finally
{
if (stream != null) stream.Close();
}
}
序列化的类看起来像这样:
[DataContract(IsReference = true)]
public class Project : IProject
{
[DataMember] public string ProjectPath { get; set; }
[DataMember] public string ProjectName { get; set; }
[DataMember] public Collection<IProjectPart> ProjectParts { get; set; }
public T GetPart<T>() where T : IProjectPart
{
return ProjectParts.OfType<T>().First();
}
public void RegisterPart<T>(T part) where T : IProjectPart
{
if (ProjectParts.Any(p => p.GetType().IsInstanceOfType(part))) throw new InvalidOperationException("Part already registered.");
ProjectParts.Add(part);
part.Project = this;
}
public void Load()
{
foreach (var projectPart in ProjectParts)
{
projectPart.Load();
}
}
public void Unload()
{
foreach (var projectPart in ProjectParts)
{
projectPart.Unload();
}
}
public void Save()
{
foreach (var projectPart in ProjectParts)
{
projectPart.Save();
}
}
public Project()
{
ProjectParts = new Collection<IProjectPart>();
}
}
谢谢!
答案 0 :(得分:1)
问题很简单 - 当您反复对序列进行序列化时,可以使用不同大小的IProjectPart
集合进行序列化。 File.Open
方法不会清除先前内容中的文件,因此请执行以下步骤:
i)使用两个IProjectPart
实例序列化对象 - 假设它需要10行xml文件
ii)使用集合中的一个IProjectPart
实例再次序列化对象 - 这次需要8行xml文件
iii)第9行和第10行将填充旧的xml数据,因为它们在序列化尝试之间未被清除 - 因此存在一些重复的垃圾状xml数据。
亲自尝试一下,您将看到这些多个标签的确切生成方式。
注意:8行和10行是我实现的近似值
注意2:我建议对序列化方法中的流使用using
语句(对于所有IDisposable对象):
private void SerializeToFile(object objectToSerialize)
{
using(var stream = File.Open(_fileName, FileMode.OpenOrCreate, FileAccess.Write))
{
using (var writer = XmlWriter.Create(stream, new XmlWriterSettings { Indent = true }))
{
NetDataContractSerializer serializer = new NetDataContractSerializer();
serializer.WriteObject(writer, objectToSerialize);
}
}
}