private object Parse(Type type, object value)
{
object result = null;
bool isNullable = !type.IsValueType;
Type t = Nullable.GetUnderlyingType(type);
if (t == null)
{
t = type;
isNullable = true;
}
if (value == null)
{
return(isNullable ? null : Activator.CreateInstance(type));
}
var str = value as string;
if (str != null)
{
if (t == typeof(IDbRef))
{
if (DbRef.CheckIsRef(str))
{
result = DbRef.FromString(str);
}
else
{
throw new Exception("Invalid DBRef: " + str);
}
}
else if (type == typeof(string))
{
result = str;
}
else if (t == typeof(Guid))
{
result = Guid.Parse(str);
}
else if (t == typeof(DateTime))
{
result = DateTime.Parse(str);
}
else if (t == typeof(Int32))
{
result = Int32.Parse(str);
}
else if (t == typeof(Decimal))
{
decimal dec;
if (!Decimal.TryParse(str, out dec))
{
dec = Decimal.Parse(str, CultureInfo.InvariantCulture);
}
result = dec;
}
else if (t == typeof(Boolean))
{
result = Boolean.Parse(str);
}
}
else if (t.IsInterface && value != null && value.GetType().GetInterfaces().Contains(t))
{
result = value;
}
else
{
try
{
result = Convert.ChangeType(value, t);
}
catch (FormatException)
{
result = Convert.ChangeType(value, t, CultureInfo.InvariantCulture);
}
}
return(result);
}