/// <summary>
/// Gets the Value Registry representing the setting provided.
/// </summary>
/// <param name="settingName">The name of the setting already registered (case sensitive).</param>
/// <returns>The IValueRegistry object representing the setting provided.</returns>
/// <exception cref="ValueRegistryNotFoundException">If the provided setting name is not found to be registered.</exception>
public IValueRegistry GetSettingRegistry(string settingName)
{
if (string.IsNullOrWhiteSpace(settingName))
{
throw new ArgumentNullException(nameof(settingName), $"Cannot get the {nameof(ValueRegistry)} of a NULL or whitespace setting name.");
}
IValueRegistry registry = _values.FirstOrDefault(val => val?.Name == settingName) as ValueRegistry;
if (registry == default(ValueRegistry))
{
throw new ValueRegistryNotFoundException($"{nameof(ValueRegistry)} for Setting Name \"{settingName}\" could not be found.");
}
return(registry);
}
private static void ValidateSettingHasValueOrIsNotRequired(string settingName, IValueRegistry registry)
{
if (!ApplicationSettings.HasValue(settingName) && (registry?.Required ?? ValueRegistry.DEFAULT_REQUIRED))
{
throw new ConfigurationErrorsException($"No value for setting \"{settingName}\" is provided in the Configuration and this setting is marked as required.");
}
}
private static bool TryGetValueAsType(string settingName, IValueRegistry registry, out dynamic value)
{
value = null;
if (registry?.ValueType == null)
{
return(false);
}
try
{
// NOTE: C# 7.0+ feature of pattern matching (Visual Studio 2017+ required)
switch (registry.ValueType)
{
case Type _ when registry.ValueType == typeof(string):
value = ApplicationSettings.AsString(settingName);
break;
case Type _ when registry.ValueType == typeof(char):
value = ApplicationSettings.AsChar(settingName);
break;
case Type _ when registry.ValueType == typeof(bool):
value = ApplicationSettings.AsBool(settingName);
break;
case Type _ when registry.ValueType == typeof(byte):
value = ApplicationSettings.AsByte(settingName);
break;
case Type _ when registry.ValueType == typeof(sbyte):
value = ApplicationSettings.AsSByte(settingName);
break;
case Type _ when registry.ValueType == typeof(decimal):
value = ApplicationSettings.AsDecimal(settingName);
break;
case Type _ when registry.ValueType == typeof(double):
value = ApplicationSettings.AsDouble(settingName);
break;
case Type _ when registry.ValueType == typeof(float):
value = ApplicationSettings.AsFloat(settingName);
break;
case Type _ when registry.ValueType == typeof(int):
value = ApplicationSettings.AsInt(settingName);
break;
case Type _ when registry.ValueType == typeof(uint):
value = ApplicationSettings.AsUInt(settingName);
break;
case Type _ when registry.ValueType == typeof(long):
value = ApplicationSettings.AsLong(settingName);
break;
case Type _ when registry.ValueType == typeof(ulong):
value = ApplicationSettings.AsULong(settingName);
break;
case Type _ when registry.ValueType == typeof(short):
value = ApplicationSettings.AsShort(settingName);
break;
case Type _ when registry.ValueType == typeof(ushort):
value = ApplicationSettings.AsUShort(settingName);
break;
default:
if (registry.CustomTypeCastFunction == null)
{
throw new InvalidCastException($"Failed to retrieve \"{settingName}\" as Type \"{registry.ValueType.FullName}\".");
}
value = registry.CustomTypeCastFunction(ApplicationSettings.AsString(settingName));
break;
}
return(true);
}
catch (InvalidCastException)
{
throw;
}
catch (Exception)
{
return(false);
}
}
