/// <summary>
/// 这个类提供了一些实用的方法来转换XML和对象。
/// </summary>
public sealed class XmlConvertor
{
private XmlConvertor()
{
}

/// <summary>
/// 将XML字符串转换到指定的对象。
/// </summary>
/// <param name="xml">XML字符串。</param>
/// <param name="type">对象的类型。</param>
/// <returns>从XML字符串反序列化的对象。</returns>
public static object XmlToObject(string xml, Type type)
{
if (null == xml)
{
throw new ArgumentNullException("xml");
}
if (null == type)
{
throw new ArgumentNullException("type");
}

object obj = null;
XmlSerializer serializer = new XmlSerializer(type);
StringReader strReader = new StringReader(xml);
XmlReader reader = new XmlTextReader(strReader);

try
{
obj = serializer.Deserialize(reader);
}
catch (InvalidOperationException ie)
{
throw new InvalidOperationException("Can not convert xml to object", ie);
}
finally
{
reader.Close();
}
return obj;
}

/// <summary>
/// 转换为XML字符串的对象。
/// </summary>
/// <param name="obj">要序列化的对象</param>
/// <param name="toBeIndented"><c>true</c> 如果想要的XML字符串的目的，否则 <c>false</c>.</param>
/// <returns>XML字符串。</returns>
public static string ObjectToXml(object obj, bool toBeIndented)
{
if (null == obj)
{
throw new ArgumentNullException("obj");
}
UTF8Encoding encoding = new UTF8Encoding(false);
XmlSerializer serializer = new XmlSerializer(obj.GetType());
MemoryStream stream = new MemoryStream();
XmlTextWriter writer = new XmlTextWriter(stream, encoding);
writer.Formatting = (toBeIndented ? Formatting.Indented : Formatting.None);

try
{
serializer.Serialize(writer, obj);
}
catch (InvalidOperationException)
{
throw new InvalidOperationException("Can not convert object to xml.");
}
finally
{
writer.Close();
}

string xml = encoding.GetString(stream.ToArray());
return xml;
}
}