C # Replication of values that implement the same property between objects of two classes with reflection

In the case of an entity conversion operation, if you need to make a conversion between two entities with the same class of two attribute fields, we want to copy the values of all the fields of the A object to the B object, we can only use B. property = A. property to write, if there are too many attribute fields, it is necessary to write a lot of line copy statements, the trouble is also easy to miss some, this time can be used in C # reflection to achieve replication. We can write a mapping function that takes advantage of generics.

1. For creating entities, assign values from one entity as a data source

        /// <summary>        ///reflection implements a copy of the value of the same property between objects of two classes///suitable for initializing new entities/// </summary>        /// <typeparam name= "D" >the returned entity</typeparam>        /// <typeparam name= "S" >Data Source Entity</typeparam>        /// <param name= "S" >Data Source Entity</param>        /// <returns>the new entity returned</returns>         Public StaticD Mapper<d, s>(s s) {D d= Activator.createinstance<d> ();//constructing a new instance            Try            {                varTypes = S.gettype ();//Get Type                varTyped =typeof(D); foreach(PropertyInfo SPinchTypes.getproperties ())//Get property fields of type                {                    foreach(PropertyInfo DPinchtyped.getproperties ()) {                        if(DP. Name = = sp. Name && DP. PropertyType = = sp. PropertyType && DP. name!="Error"&& DP. Name! ="Item")//determine if property names are the same{dp. SetValue (d, Sp.) GetValue (s),NULL),NULL);//gets the value of the S object property copied to the properties of the D object                        }                    }                }            }            Catch(Exception ex) {Throwex; }            returnD; }

2. Applicable to the conversion of data between two entities without creating an entity

        /// <summary>        ///reflection implements a copy of the value of the same property between objects of two classes///applies to no new entities between/// </summary>        /// <typeparam name= "D" >the returned entity</typeparam>        /// <typeparam name= "S" >Data Source Entity</typeparam>        /// <param name= "D" >the returned entity</param>        /// <param name= "S" >Data Source Entity</param>        /// <returns></returns>         Public StaticD Mappertomodel<d, s>(D d,s S) {Try            {                varTypes = S.gettype ();//Get Type                varTyped =typeof(D); foreach(PropertyInfo SPinchTypes.getproperties ())//Get property fields of type                {                    foreach(PropertyInfo DPinchtyped.getproperties ()) {                        if(DP. Name = = sp. Name && DP. PropertyType = = sp. PropertyType && DP. Name! ="Error"&& DP. Name! ="Item")//determine if property names are the same{dp. SetValue (d, Sp.) GetValue (s),NULL),NULL);//gets the value of the S object property copied to the properties of the D object                        }                    }                }            }            Catch(Exception ex) {Throwex; }            returnD; }

C # Replication of values that implement the same property between objects of two classes with reflection