Registry / configurationSettings / XML参数似乎仍然非常活跃。随着技术的进步,我已经全部使用了它们,但是我最喜欢的是基于Threed的系统与Isolated Storage相结合。
以下示例允许将名为属性的对象存储到隔离存储中的文件中。如:
AppSettings.Save(myobject, "Prop1,Prop2", "myFile.jsn");
可以使用以下方法恢复属性:
AppSettings.Load(myobject, "myFile.jsn");
这只是一个示例,并不代表最佳实践。
internal static class AppSettings
{
internal static void Save(object src, string targ, string fileName)
{
Dictionary<string, object> items = new Dictionary<string, object>();
Type type = src.GetType();
string[] paramList = targ.Split(new char[] { ',' });
foreach (string paramName in paramList)
items.Add(paramName, type.GetProperty(paramName.Trim()).GetValue(src, null));
try
{
// GetUserStoreForApplication doesn't work - can't identify.
// application unless published by ClickOnce or Silverlight
IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForAssembly();
using (IsolatedStorageFileStream stream = new IsolatedStorageFileStream(fileName, FileMode.Create, storage))
using (StreamWriter writer = new StreamWriter(stream))
{
writer.Write((new JavaScriptSerializer()).Serialize(items));
}
}
catch (Exception) { } // If fails - just don't use preferences
}
internal static void Load(object tar, string fileName)
{
Dictionary<string, object> items = new Dictionary<string, object>();
Type type = tar.GetType();
try
{
// GetUserStoreForApplication doesn't work - can't identify
// application unless published by ClickOnce or Silverlight
IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForAssembly();
using (IsolatedStorageFileStream stream = new IsolatedStorageFileStream(fileName, FileMode.Open, storage))
using (StreamReader reader = new StreamReader(stream))
{
items = (new JavaScriptSerializer()).Deserialize<Dictionary<string, object>>(reader.ReadToEnd());
}
}
catch (Exception) { return; } // If fails - just don't use preferences.
foreach (KeyValuePair<string, object> obj in items)
{
try
{
tar.GetType().GetProperty(obj.Key).SetValue(tar, obj.Value, null);
}
catch (Exception) { }
}
}
}