/// <summary>
/// Gets a string from an instance of <c>T</c>.
/// </summary>
/// <typeparam name = "T"></typeparam>
/// <param name = "value">The value.</param>
/// <returns>
/// <c>T</c> as a string.
/// </returns>
/// <remarks>
/// If you are using a custom or special type, you should make sure that
/// there is a <see cref = "TypeConverter" /> registered for it.
/// </remarks>
internal static string GetStringFromT <T>(T value)
{
if (ReferenceEquals(value, default(T)))
{
return(string.Empty);
}
Type typeOfT = typeof(T);
string stringValue;
TypeConverter converter = TypeDescriptor.GetConverter(typeOfT);
// verify that we can eventually round-trip the object.
if (converter.CanConvertTo(StringType) &&
converter.CanConvertFrom(StringType))
{
stringValue = converter.ConvertTo(value, StringType) as string;
}
else
{
if (IsStringArray <T>())
{
var stringArrayConverter = new StringArrayConverter();
stringValue = stringArrayConverter.ConvertTo(value, StringType) as string;
}
else if (IsByteArray <T>())
{
var stringArrayConverter = new ByteArrayConverter();
stringValue = stringArrayConverter.ConvertTo(value, StringType) as string;
}
else
{
TypeConverter stringConverter = TypeDescriptor.GetConverter(StringType);
if (stringConverter.CanConvertTo(typeOfT) &&
stringConverter.CanConvertFrom(typeOfT))
{
stringValue = stringConverter.ConvertTo(value, StringType) as string;
}
else
{
if (typeOfT == typeof(object))
{
stringValue = value.ToString();
}
else
{
string message = string.Format(Strings.Culture,
Strings.CannotRoundTripType0,
value.GetType());
throw new InvalidOperationException(message);
}
}
}
}
return(stringValue);
}
/// <summary>
/// Gets an instance of T from string.
/// </summary>
/// <typeparam name = "T">
/// </typeparam>
/// <param name = "value">The value to convert.</param>
/// <returns>
/// <paramref name = "value" /> as an instance of <c>T</c> or an exception if
/// the conversion is not possible.
/// </returns>
internal static T GetTFromString <T>(string value)
{
Type typeOfT = typeof(T);
try
{
if (IsBool <T>())
{
// Need to use aliasing to get around this.
return(ConvertToBool <T>(value));
}
if (IsStringArray <T>())
{
var stringArrayConverter = new StringArrayConverter();
return((T)stringArrayConverter.ConvertFrom(value));
}
if (IsByteArray <T>())
{
var byteArrayConverter = new ByteArrayConverter();
return((T)byteArrayConverter.ConvertFrom(value));
}
TypeConverter converter = TypeDescriptor.GetConverter(typeOfT);
if (converter.CanConvertFrom(StringType))
{
return((T)converter.ConvertFrom(value));
}
throw new InvalidOperationException(string.Format(Strings.Culture,
Strings.NoTypeConverterForRestore0,
typeOfT.Name));
}
catch (Exception ex)
{
string message = string.Format(Strings.Culture, Strings.FailedToConvert0T1, value, typeOfT.Name);
throw new Exception(message, ex);
}
}
