配置文件功能完善

System.Application.SteamTools.Client.Desktop/Serialization/ApplicationSettingsProvider.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Configuration;
+using System.Linq;
+
+namespace System.Application.Serialization
+{
+	public class ApplicationSettingsProvider : ApplicationSettingsBase, ISerializationProvider
+	{
+		public static ISerializationProvider Default { get; } = new ApplicationSettingsProvider(typeof(ApplicationSettingsProvider).FullName + "." + nameof(Default));
+
+		public bool IsLoaded { get; private set; }
+
+		// UserScopedSettings 除非至少有一个，否则似乎不会读取LocalFileSettingsProvider
+		// ReSharper disable once InconsistentNaming
+		// ReSharper disable once UnassignedGetOnlyAutoProperty
+		[UserScopedSetting, EditorBrowsable(EditorBrowsableState.Never)]
+		public object __Infrastructure { get; }
+
+		public ApplicationSettingsProvider() { }
+
+		public ApplicationSettingsProvider(string settingsKey) : base(settingsKey) { }
+
+		public void SetValue<T>(string key, T value)
+		{
+			this.AddProperty(key, typeof(T));
+			this[key] = value;
+		}
+
+		public bool TryGetValue<T>(string key, out T value)
+		{
+			this.AddProperty(key, typeof(T));
+
+			try
+			{
+				value = (T)this[key];
+				return true;
+			}
+			catch
+			{
+				value = default(T);
+				return false;
+			}
+		}
+
+		public bool RemoveValue(string key)
+		{
+			return this.RemoveProperry(key);
+		}
+
+		private void AddProperty(string key, Type type)
+		{
+			if (this.Properties.OfType<SettingsProperty>().All(x => x.Name != key))
+			{
+				var property = new SettingsProperty(key)
+				{
+					PropertyType = type,
+					Provider = this.Providers.OfType<SettingsProvider>().FirstOrDefault(),
+					SerializeAs = SettingsSerializeAs.Xml,
+				};
+				property.Attributes.Add(typeof(UserScopedSettingAttribute), new UserScopedSettingAttribute());
+
+				this.Properties.Add(property);
+				this.Reload();
+			}
+		}
+
+		private bool RemoveProperry(string key)
+		{
+			if (this.Properties.OfType<SettingsProperty>().All(x => x.Name != key))
+			{
+				return false;
+			}
+
+			this.Properties.Remove(key);
+			this.Reload();
+
+			return true;
+		}
+
+		void ISerializationProvider.Load()
+		{
+			this.Reload();
+			this.IsLoaded = true;
+		}
+
+		event EventHandler ISerializationProvider.Reloaded
+		{
+			add { }
+			remove { }
+		}
+	}
+}