private T ConvertValue <T>(string str)
{
Type type = typeof(T);
if (type == typeof(string))
{
return((T)(object)str);
}
else if (type == typeof(decimal))
{
return((T)(object)convertToDecimal(str));
}
else if (typeof(Enum).IsAssignableFrom(type))
{
return((T)MwsUtil.GetEnumValue(type, str));
}
else if (typeof(IConvertible).IsAssignableFrom(type))
{
return((T)Convert.ChangeType(str, type, CultureInfo.InvariantCulture));
}
else if (Nullable.GetUnderlyingType(type) != null)
{
return(convertNullableType <T>(str));
}
else
{
throw new InvalidDataException("Unsupported type for conversion from string: " + type.FullName);
}
}
private T ConvertValue <T>(string str)
{
Type type = typeof(T);
if (type == typeof(string))
{
return((T)(object)str);
}
else if (typeof(Enum).IsAssignableFrom(type))
{
return((T)MwsUtil.GetEnumValue(type, str));
}
else if (typeof(IConvertible).IsAssignableFrom(type))
{
return((T)Convert.ChangeType(str, type, CultureInfo.InvariantCulture));
}
else if (Nullable.GetUnderlyingType(type) != null)
{
// Nullable types don't pass through Convert correctly
if (String.IsNullOrEmpty(str))
{
return(default(T));
}
else
{
// First, get the type that is nullable
Type valueType = Nullable.GetUnderlyingType(type);
// Recurse using the actual value type: ConvertValue<valueType> (must use reflection since we are generic)
MethodInfo recursiveMethod = this.GetType().GetMethod("ConvertValue", BindingFlags.NonPublic | BindingFlags.Instance);
var value = recursiveMethod.MakeGenericMethod(valueType).Invoke(this, new object[] { str });
// Return a new Nullable<valueType> (which is T) using the value we converted
return((T)Activator.CreateInstance(type, new object[] { value }));
}
}
else
{
throw new InvalidDataException("Unsupported type for conversion from string: " + type.FullName);
}
}
