我想通过实现 IXmlSerialized 创建自定义 xml 序列化。 我有一个实现 IXmlSerialized 接口(interface)的测试类:
[Serializable]
public class Employee : IXmlSerializable
{
public Employee()
{
Name = "Vyacheslav";
Age = 23;
}
public string Name{get; set;}
public int Age { get; set; }
public System.Xml.Schema.XmlSchema GetSchema()
{
return null;
}
public void ReadXml(XmlReader reader)
{
this.Name = reader["Name"].ToString();
this.Age = Int32.Parse(reader["Age"].ToString());
}
public void WriteXml(XmlWriter writer)
{
XmlWriterSettings settings = new XmlWriterSettings();
settings.OmitXmlDeclaration = true;
settings.ConformanceLevel = ConformanceLevel.Fragment;
XmlWriter newWriter = XmlWriter.Create(writer, settings);
newWriter.WriteAttributeString("Name", this.Name);
newWriter.WriteAttributeString("Age", this.Age.ToString());
}
}
我想要做的是省略 xml 声明。为此,我创建了 XmlWriterSettings 的正确实例并将其作为第二个参数传递以创建新的 XmlWriter。 但是当我调试这段代码时,我看到 newWriter.Settings.OmitXmlDeclaration 设置为 false 并且序列化数据包含标记。我做错了什么?
实际的序列化如下所示:
var me = new Employee();
XmlSerializer serializer = new XmlSerializer(typeof(Employee));
TextWriter writer = new StreamWriter(@"D:\file.txt");
serializer.Serialize(writer, me);
writer.Close();
第二个问题是 - 如果我想序列化在要序列化的字段中具有自定义类型 ContactInfo 的 Employee 类型,我是否也需要在 ContactInfo 上实现 IXmlSerializable?
最佳答案
writer-settings 是最外层 writer 的函数;您应该将其应用于创建文件的代码,即
using(var file = File.Create("file.txt"))
using(var writer = XmlWriter.Create(file, settings))
{
serializer.Serialize(writer, me);
}
此外,您不需要实现IXmlSerialized
。你无法在内在层面做到这一点——已经太晚了。
例如:
using System.IO;
using System.Xml;
using System.Xml.Serialization;
public class Employee
{
[XmlAttribute] public string Name { get; set; }
[XmlAttribute] public int Age { get; set; }
}
class Program
{
static void Main()
{
var settings = new XmlWriterSettings();
settings.OmitXmlDeclaration = true;
var me = new Employee {
Name = "Vyacheslav", Age = 23
};
var serializer = new XmlSerializer(typeof (Employee));
using (var file = File.Create("file.txt"))
using (var writer = XmlWriter.Create(file, settings))
{
serializer.Serialize(writer, me);
}
}
}
如果您不需要额外的命名空间,那么:
var ns = new XmlSerializerNamespaces();
ns.Add("", "");
serializer.Serialize(writer, me, ns);
生成文件:
<Employee Name="Vyacheslav" Age="23" />
关于c# - 在 XmlWriter 中省略 XmlDeclaration 并实现 IXmlSerializable,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/7722961/