C# Properties.Settings 属性不设置任何值

Question

我想在“MyProject.Properties.Settings.Default.Property”中更改值，但给我错误和这个错误；

Severity Code Description Project File Line Suppression State Error CS0200 Property or indexer 'Settings.Version' cannot be assigned to -- it is read only

我该如何解决这个问题？或者我可以尝试哪种不同的方法？

21.03.2017 编辑 - 我用这种方法解决了问题

Properties.Settings.Default["Version"] = File.GetLastWriteTime(mainDllPath).ToString("ddMMyyyyhhmmss");
Properties.Settings.Default.Save();

Answer 1

来自 Microsoft :

Settings that are application-scoped are read-only, and can only be changed at design time or by altering the .config file in between application sessions. Settings that are user-scoped, however, can be written at run time just as you would change any property value. The new value persists for the duration of the application session. You can persist the changes to the settings between application sessions by calling the Save method.

How To: Write and Persist User Settings at Run Time with C#:

Access the setting and assign it a new value as shown in this example:

Properties.Settings.Default.myColor = Color.AliceBlue;

If you want to persist the changes to the settings between application sessions, call the Save method as shown in this example:

Properties.Settings.Default.Save();

User settings are saved in a file within a subfolder of the user’s local hidden application data folder.

You can find more about using settings in c# here .