/// <summary> /// Check if the value of a property on a DTO is not null. /// Allows accessing properties where the implementation type of the DTO is not known. /// </summary> public static bool HasValue <TObject, TValue>(this IClassDto <TObject> dto, Expression <Func <TObject, TValue> > property) => !(GetPropertyInfo(dto, property).GetValue(dto) is null);
/// <summary> /// Get the value of a string property on a generic DTO. /// Allows accessing properties where the implementation type of the DTO is not known. /// </summary> public static string GetValue <TObject>(this IClassDto <TObject> dto, Expression <Func <TObject, string> > property) // This is just a "nice" alias for GetObject so you can still invoke a method called "GetValue" for strings. => dto.GetObject(property);
/// <summary>
/// Get the value of an object property on a generic DTO.
/// Allows accessing properties where the implementation type of the DTO is not known.
/// </summary>
public static TValue GetObject <TObject, TValue>(this IClassDto <TObject> dto, Expression <Func <TObject, TValue> > property)
where TValue : class
=> GetPropertyInfo(dto, property).GetValue(dto) as TValue;
/// <summary>
/// Get the value of a value type on a generic DTO.
/// Allows accessing properties where the implementation type of the DTO is not known.
/// </summary>
public static TValue?GetValue <TObject, TValue>(this IClassDto <TObject> dto, Expression <Func <TObject, TValue?> > property)
where TValue : struct
=> GetPropertyInfo(dto, property).GetValue(dto) as TValue?;
