UWP中的c# XML序列化
本文关键字：序列化 XML 中的 UWP | 更新日期: 2023-09-27 18:03:11
我正在尝试将多个列表序列化到一个唯一的xml文件。我的项目是一个UWP，目前它似乎序列化我的3个列表，但文件显示为空。以前一个用户帮助我的部分代码。如何正确序列化它
执行我的代码只需使用:"project();"
我所有的代码:
using Project.Common;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.IO;
using System.Xml.Serialization;
using Windows.Storage;
using System.Threading.Tasks;
namespace Project
{
public class All_Classes
{
public class List1 : BindableBase
{
private int _Property1;
public int Property1
{
get { return _Property1; }
set { SetProperty(ref _Property1, value); }
}
private bool _Property2;
public bool Property2
{
get { return _Property2; }
set { SetProperty(ref _Property2, value); }
}
private bool _Property3;
public bool Property3
{
get { return _Property3; }
set { SetProperty(ref _Property3, value); }
}
}
public class List2 : BindableBase
{
private bool _Property1;
public bool Property1
{
get { return _Property1; }
set { SetProperty(ref _Property1, value); }
}
private bool _Property2;
public bool Property2
{
get { return _Property2; }
set { SetProperty(ref _Property2, value); }
}
}
public class List3 : BindableBase
{
private double _Property1;
public double Property1
{
get { return _Property1; }
set { SetProperty(ref _Property1, value); }
}
private double _Property2;
public double Property2
{
get { return _Property2; }
set { SetProperty(ref _Property2, value); }
}
private double _Property3;
public double Property3
{
get { return _Property3; }
set { SetProperty(ref _Property3, value); }
}
private double _Property4;
public double Property4
{
get { return _Property4; }
set { SetProperty(ref _Property4, value); }
}
}
public class Values_List1 : ObservableCollection<List1>
{
}
public class Values_List2 : ObservableCollection<List2>
{
}
public class Values_List3 : ObservableCollection<List3>
{
}
public static class ApplicationServices
{
public static Values_List1 List1 = new Values_List1();
public static Values_List2 List2 = new Values_List2();
public static Values_List3 List3 = new Values_List3();
static ApplicationServices()
{
}
}
public static void AddNewData()
{
ApplicationServices.List1.Add(new List1()
{
Property1 = 1,
Property2 = true,
Property3 = false,
});
ApplicationServices.List2.Add(new List2()
{
Property1 = false,
Property2 = true,
});
ApplicationServices.List3.Add(new List3()
{
Property1 = 3.564,
Property2 = 0.215,
Property3 = 0.7252,
Property4 = 23.463,
});
}
public static async void SaveObjectToXml<T>(T objectToSave)
{
//<-----------FilePicker------------------>
var savePicker = new Windows.Storage.Pickers.FileSavePicker();
savePicker.SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.DocumentsLibrary;
savePicker.FileTypeChoices.Add("New File", new List<string>() { ".xml" });
savePicker.SuggestedFileName = "New File";
StorageFile newfile = await savePicker.PickSaveFileAsync();
//<-----------FilePicker------------------>
//<----------------Serializacion------------------>
var serializer = new XmlSerializer(typeof(T));
Stream stream = await newfile.OpenStreamForWriteAsync();
using (stream)
{
serializer.Serialize(stream, objectToSave);
}
//<----------------Serializacion------------------>
}
public class myCompoundClass
{
public List1 List1 { get; set; }
public List2 List2 { get; set; }
public List3 List3 { get; set; }
}
public static void project()
{
myCompoundClass new_instance = new myCompoundClass();
AddNewData();
SaveObjectToXml(new_instance);
}
}
}
我想要得到类似的东西:
<?xml version="1.0" encoding="utf-8"?>
<Root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<List1>
<Property1>1</Property1>
<Property2>true</Property2>
<Property3>false</Property3>
<ToAcero>0.1</ToAcero>
</List1>
<List2>
<Property1>true</Property1>
<Property2>true</Property2>
</List2>
<List3>
<Property1>3.564</Property1>
<Property2>0.215</Property2>
<Property3>0.7252</Property3>
<Property4>23.463</Property4>
</List3>
</Root>
您不能在您的myCompoundClass中设置任何属性值List1或List2或List3:
myCompoundClass new_instance = new myCompoundClass();
AddNewData();
// new_instance was not passed to AddNewData and so its properties have their default values of null.
SaveObjectToXml(new_instance);
因此它的所有属性仍然是null。这就是XML文件为空的原因。在序列化之前，您需要将数据从static class ApplicationServices移动到new_instance。
你问，我如何用ApplicationServices填充"new_instance"?您的问题是，您想序列化您的ApplicationServices类，但它是一个静态类，因此不能按原样序列化。我的建议是:
重命名类型。您有
List1之类的类型而不是列表。我的建议如下:public class Values1 : BindableBase // Formerly List1 { // Contents unchanged } public class Values2 : BindableBase // Formerly List2 { // Contents unchanged } public class Values3 : BindableBase // Formerly List3 { // Contents unchanged } public class Values1List : ObservableCollection<Values1> { } public class Values2List : ObservableCollection<Values2> { } public class Values3List : ObservableCollection<Values3> { }你现有的命名约定误导了什么是集合，什么不是集合。
另外，我建议您不要将它们嵌套在
All_Classes类中。这样做只会增加复杂性而不是清晰度。将静态值列表设置为只读:
public static class ApplicationServices { public static readonly Values1List List1 = new Values1List(); public static readonly Values2List List2 = new Values2List(); public static readonly Values3List List3 = new Values3List(); static ApplicationServices() { } }由于不能序列化静态类型，因此引入以下数据传输对象进行序列化:
[XmlRoot("Root")] public class ApplicationServicesDTO { [XmlElement] public Values1List List1 { get { return ApplicationServices.List1; } } [XmlElement] public Values2List List2 { get { return ApplicationServices.List2; } } [XmlElement] public Values3List List3 { get { return ApplicationServices.List3; } } }一些注意事项:
注意
List属性是只能获取的。一般来说，XmlSerializer不会序列化get-only属性，但是当预分配集合时，它会序列化get-only 集合属性。[XmlRoot("Root")]表示该类型应该用一个名为<Root>的根元素序列化。[XmlElement]应用于集合属性，表示该集合应该被序列化为没有外部容器元素的重复元素序列。
现在你可以这样做:
var new_instance = new ApplicationServicesDTO();
你的静态列表将被序列化成你想要的XML格式。
注意，如果您以后想要反序列化您的XML，您可能希望首先清除ApplicationServices中预先存在的列表。有关解释，请参阅使用代码默认值的集合属性的XML反序列化。