我试图将自定义类保存到用户设置,但没有太大的成功。如何使用ApplicationSettingsBase将自定义类保存到用户设置?
我创建了一个测试项目在Visual Studio 2010与目标框架=” .NET框架4" 。主窗体有两个文本框用于显示和编辑普通测试字符串和我的自定义类中的“标题”字段;连同两个按钮来加载和保存设置。
最后,我添加了两个设置“TestString”(一个纯字符串值)和TestData(MyDataClass类型 - 我在项目的Properties.Settings选项卡中通过从Type下拉列表中选择“Browse ...”在“选定类型”框中手动输入“MyUserSettingsTest.MyDataClass”,因为它最初并不出现在可用类型列表中,但随后会出现)。
在启动应用程序并单击LoadSettings时,事件处理程序将加载plain字符串和MyData,或者,如果失败,则创建一个MyDataClass的新实例。然后,我可以在窗体上编辑纯字符串和测试数据Title,然后单击SaveSettings。如果我然后重新编辑这些值,请再次单击LoadSettings,最后保存的值将按预期恢复为这两个值。到现在为止还挺好。
的问题是,在退出程序,重新启动它的纯测试字符串恢复正常,但MyData的对象不是!显然,代码是坚持MyData的内存好,但没有永久存储?
主要形式的代码是:
using System;
using System.Windows.Forms;
namespace MyUserSettingsTest
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public MyDataClass MyData {get;set;}
private void loadSettingsButton_Click(object sender, EventArgs e)
{
this.myTextBox.Text = Properties.Settings.Default.TestString;
this.MyData = Properties.Settings.Default.TestData;
if (this.MyData == null)
{
this.MyData = new MyDataClass() { ID = 1, Title = "Default New Title" };
}
this.myDataTitleTextBox.Text = this.MyData.Title;
}
private void saveSettingsButton_Click(object sender, EventArgs e)
{
this.MyData.Title = this.myDataTitleTextBox.Text;
Properties.Settings.Default.TestString = this.myTextBox.Text;
Properties.Settings.Default.TestData = this.MyData;
Properties.Settings.Default.Save();
}
}
}
我的测试数据类代码:
using System.Configuration;
namespace MyUserSettingsTest
{
public class MyDataClass : ApplicationSettingsBase
{
public MyDataClass()
{
}
private int _id;
private string _title;
[UserScopedSetting()]
[SettingsSerializeAs(SettingsSerializeAs.Xml)]
public int ID
{
get { return _id; }
set { _id = value; }
}
[UserScopedSetting()]
[SettingsSerializeAs(SettingsSerializeAs.Xml)]
public string Title
{
get { return _title; }
set { _title = value; }
}
}
}
我不知道,如果它是的帮助,但自动生成的app.config文件(包含TestString但NOT TestData !!?的设置)为:
<?xml version="1.0"?>
<configuration>
<configSections>
<sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<section name="MyUserSettingsTest.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false"/>
</sectionGroup>
</configSections>
<userSettings>
<MyUserSettingsTest.Properties.Settings>
<setting name="TestString" serializeAs="String">
<value/>
</setting>
</MyUserSettingsTest.Properties.Settings>
</userSettings>
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>
自动生成Settings.Designer.cs文件是:
//------------------------------------------------------------------------------
// <auto-generated>
// This code was generated by a tool.
// Runtime Version:4.0.30319.269
//
// Changes to this file may cause incorrect behavior and will be lost if
// the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------
namespace MyUserSettingsTest.Properties {
[global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
[global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "10.0.0.0")]
internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
public static Settings Default {
get {
return defaultInstance;
}
}
[global::System.Configuration.UserScopedSettingAttribute()]
[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
[global::System.Configuration.DefaultSettingValueAttribute("")]
public string TestString {
get {
return ((string)(this["TestString"]));
}
set {
this["TestString"] = value;
}
}
[global::System.Configuration.UserScopedSettingAttribute()]
[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
public global::MyUserSettingsTest.MyDataClass TestData {
get {
return ((global::MyUserSettingsTest.MyDataClass)(this["TestData"]));
}
set {
this["TestData"] = value;
}
}
}
}
请谁能告诉我,我做错了什么或者我需要做的就是我的自定义类来坚持正确的用户设置什么额外的费用。
它比试图重新定义车轮要简单得多。只要列表很短,它应该没问题:)这绝对适合我,所以谢谢你,这么简单! –