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各位老师，我遇到一个问题。我要把一个ArrayList类存入xml文件,ArrayList内的元素是一个自定的类skeletonData。这个类的定义如下： public class skeletonData { public string name { get; set; } //private bool isSystem; public ArrayList rightPositionArray;//用于存放joint数据 public ArrayList leftPositionArray; public bool flag; public int level; public int correspond; } 然后我编了一个用来做存储和读取操作的类代码如下： public class kinect_database { public ArrayList skeletonArrayPresent; public skeletonData skeletonPresent; public kinect_database()//构造函数 { skeletonArrayPresent = new ArrayList(); skeletonPresent = new skeletonData(); } public ArrayList read()//从文件读取所有动作，返回包含所有动作的arraylist. { System.Xml.Serialization.XmlSerializer reader = new System.Xml.Serialization.XmlSerializer(typeof(ArrayList)); System.IO.StreamReader file = new System.IO.StreamReader(@"c:\temp\SerializationOverview.xml"); skeletonArrayPresent = (ArrayList)reader.Deserialize(file); file.Close(); return skeletonArrayPresent; } public bool save()//将当前SkeletonArray保存至文件。 { skeletonArrayPresent.Add(skeletonPresent); System.Xml.Serialization.XmlSerializer writer = new System.Xml.Serialization.XmlSerializer(typeof(ArrayList)); System.IO.StreamWriter file = new System.IO.StreamWriter(@"c:\temp\SerializationOverview.xml"); writer.Serialize(file, skeletonArrayPresent); file.Close(); return true; } } 下面是控制台程序的main方法： class Program { static void Main(string[] args) { kinect_database ki = new kinect_database(); skeletonData skele1 = new skeletonData(); ArrayList d = new ArrayList(); ki.skeletonPresent.name = "test";//将ki实例中的skeletonPresent中的name设一个值 ki.save();//存储 ki.read();//读取 skele1 = ki.skeletonArrayPresent[0]; Console.WriteLine("值:{0}",skele1.name); } } 出错提示是： Unhandled Exception: System.InvalidOperationException: There was an error genera ting the XML document. ---> System.InvalidOperationException: The type ConsoleAp plication1.skeletonData was not expected. Use the XmlInclude or SoapInclude attr ibute to specify types that are not known statically. at System.Xml.Serialization.XmlSerializationWriter.WriteTypedPrimitive(String name, String ns, Object o, Boolean xsiType) at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriterArrayL ist.Write1_Object(String n, String ns, Object o, Boolean isNullable, Boolean nee dType) at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriterArrayL ist.Write2_ArrayOfAnyType(Object o) --- End of inner exception stack trace --- at System.Xml.Serialization.XmlSerializer.Serialize(XmlWriter xmlWriter, Obje ct o, XmlSerializerNamespaces namespaces, String encodingStyle, String id) at System.Xml.Serialization.XmlSerializer.Serialize(TextWriter textWriter, Ob ject o, XmlSerializerNamespaces namespaces) at System.Xml.Serialization.XmlSerializer.Serialize(TextWriter textWriter, Ob ject o) at ConsoleApplication1.kinect_database.save() in C:\Documents and Settings\Ad ministrator\my documents\visual studio 2010\Projects\ConsoleApplication1\Console Application1\Program.cs:line 62 at ConsoleApplication1.Program.Main(String[] args) in C:\Documents and Settin gs\Administrator\my documents\visual studio 2010\Projects\ConsoleApplication1\Co nsoleApplication1\Program.cs:line 159 请按任意键继续. . . 上面提示中的62行是save()方法中的writer.Serialize(file, skeletonArrayPresent);行。 159行是main方法中的 “ki.save();//存储” 行。但是将save()方法中xml要序列化的类型改为skeletonData，即： public bool save()//将当前SkeletonArray保存至文件。 { System.Xml.Serialization.XmlSerializer writer = new System.Xml.Serialization.XmlSerializer(typeof(skeletonData));//这里修改了 System.IO.StreamWriter file = new System.IO.StreamWriter(@"c:\temp\SerializationOverview.xml"); writer.Serialize(file, skeletonPresent);//这里修改了 file.Close(); return true; } 就是不存ArrayList类型而存自定义的skeletonData类型的话，一切正常。我的问题是是不是XML的序列化不能存储ArrayList类？如果不能存储ArrayList类的话，用什么方法可以把ArrayList类存入一个文件，并且读出的时候可以直接读出？谢谢各位了如果还有没说清楚的我接着描述清楚的附上源文件附件(2.6KB) Program.cs

请教如何将ArrayList类的实例用XML的serialize方法存入xml文件