public Lazy <bool> GetBool(string key, bool defaultValue)
{
return(new Lazy <bool>(() =>
{
string value = ConfigUtility.GetAppSetting(key);
if (!string.IsNullOrEmpty(value))
{
if (bool.TryParse(value, out bool result))
{
return result;
}
throw new FrameworkException("Invalid '" + key + "' parameter in configuration file: '" + value + "' is not a boolean value. Allowed values are True and False.");
}
else
{
return defaultValue;
}
}));
}
public Lazy <int> GetInt(string key, int defaultValue)
{
return(new Lazy <int>(() =>
{
string value = ConfigUtility.GetAppSetting(key);
if (!string.IsNullOrEmpty(value))
{
if (int.TryParse(value, out int result))
{
return result;
}
throw new FrameworkException("Invalid '" + key + "' parameter in configuration file: '" + value + "' is not an integer value.");
}
else
{
return defaultValue;
}
}));
}
public Lazy <T> GetEnum <T>(string key, T defaultValue) where T : struct
{
return(new Lazy <T>(() =>
{
var value = ConfigUtility.GetAppSetting(key);
if (!string.IsNullOrEmpty(value))
{
if (Enum.TryParse(value, true, out T parsedValue))
{
return parsedValue;
}
else
{
throw new FrameworkException(
$"Invalid '{key}' parameter in configuration file: '{value}' is not a valid value." +
$" Allowed values are: {string.Join(", ", Enum.GetNames(typeof(T)))}.");
}
}
else
{
return defaultValue;
}
}));
}
public Lazy <string> GetString(string key, string defaultValue)
{
return(new Lazy <string>(() => ConfigUtility.GetAppSetting(key) ?? defaultValue));
}
