Enum.Parse fails to cast string

Question

I'm trying to load some AppSettings into an object. The settings look like this:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <add key="Logging_default_path" value="C:\Temp" />
    <add key="Logging_max_file_size" value="10485760" />
    <add key="Logging_levels" value="Error,Warning,Info"/>
    <add key="Logging_filename" value="RobinsonLog" />
  </appSettings>
</configuration>

The Logging_levels represents several enum values that are allowed by the settings. I'm trying to load these into my object by using the following code:

Level = (LogLevel)Enum.Parse(typeof(LogLevel), settings["Logging_levels"]);

But this is not working and I'm only getting LogLevel.Info returned, not the value of Loglevel.Error | LogLevel.Warning | LogLevel.Info. The enum is defined as followed:

[Flags]
public enum LogLevel
{
    Error = 0x0,
    Warning = 0x1,
    Info = 0x2,
    Debug = 0x3,
    Performance = 0x4
}

Am I wrong by defining the values in hex? or did I miss something else?

Answer 1

Your enum values are going to cause problems.

The values of a Flags enum must be powers of two, and you shouldn't use 0 for any value other than some kind of empty/none/nothing indicator.

Does this make any difference?

[Flags]
public enum LogLevel
{
    None        =  0
    Error       =  1,
    Warning     =  2,
    Info        =  4,
    Debug       =  8,
    Performance = 16
}