我有一个数组,其索引映射回Enum
值。我想使用C#Xml序列化库来序列化这个数组。但是,我希望每个Xml节点都能说出它所代表的Enum类型的名称。我怎么能这样做?
示例:
public class NumberOfEmployees
{
public enum EmployeeType { Lawyer, Doctor, Engineer };
public int[] NumEmployees { get; set; }
// Constructor initializes array to size of "EmployeeType"
public NumberOfEmployees()
{
int size = Enum.GetValues(typeof(EmployeeType)).Length;
this.NumEmployees = new int[size];
}
}
Main()
{
NumberOfEmployees numEmployees = new NumberOfEmployees();
// Add doctors, lawyers, engineers, etc...
// numEmployees.NumEmployees[(int)NumberOfEmployees.Lawyer] = 3;
// numEmployees.NumEmployees[(int)NumberOfEmployees.Doctor] = 2;
// numEmployees.NumEmployees[(int)NumberOfEmployees.Engineer] = 1;
// Serialize to "file"
FileStream fs = new FileStream(file, FileMode.OpenOrCreate);
XmlSerializer xml = new XmlSerializer(typeof(NumberOfEmployees));
xml.Serialize(fs, numEmployees);
fs.Close();
}
最终结果是xml看起来像这样:
<NumEmployees>
<int>3</int>
<int>2</int>
<int>1</int>
</NumEmployees>
但我想要的是:
<NumEmployees>
<Lawyer>3</Lawyer>
<Doctor>2</Doctor>
<Engineer>1</Engineer>
</NumEmployees>
我不能单独存储每个数字 - 它必须是一个数组。
感谢。
答案 0 :(得分:4)
您可以使用XmlSerializer实现IXmlSerializable接口以完全自定义序列化。类似于以下内容:
public class NumberOfEmployees : IXmlSerializable
{
public int[] NumEmployees { get; set; }
// Constructor initializes array to size of "EmployeeType"
public NumberOfEmployees()
{
int size = Enum.GetValues(typeof(EmployeeType)).Length;
this.NumEmployees = new int[size];
}
public XmlSchema GetSchema()
{
return null;
}
public void ReadXml(XmlReader reader)
{
reader.ReadStartElement();
NumEmployees[(int)EmployeeType.Lawyer] = int.Parse(reader.ReadElementString("Lawyer"));
NumEmployees[(int)EmployeeType.Doctor] = int.Parse(reader.ReadElementString("Doctor"));
NumEmployees[(int)EmployeeType.Engineer] = int.Parse(reader.ReadElementString("Engineer"));
reader.ReadEndElement();
}
public void WriteXml(XmlWriter writer)
{
writer.WriteElementString("Lawyer", NumEmployees[(int)EmployeeType.Lawyer].ToString());
writer.WriteElementString("Doctor", NumEmployees[(int)EmployeeType.Doctor].ToString());
writer.WriteElementString("Engineer", NumEmployees[(int)EmployeeType.Engineer].ToString());
}
}
完成所有操作后,仍然使用XmlSerializer
似乎毫无意义,因为您的类正在处理序列化的所有工作。但是,如果NumberOfEmployees
是更大的XML结构(我认为是)的一部分,那么它仍然有意义。
另请注意,代码不会进行任何验证,因为这是一个简单的示例。因此,当序列化类时,所有三个数组元素都将存在,并且在反序列化时,预计所有三个XML元素都将存在。
IXmlSerializable
界面的更多信息可在此处获取:
http://msdn.microsoft.com/en-us/library/system.xml.serialization.ixmlserializable.aspx