Convert a list generic data source to a JSON string based on reflect

In web development, the more commonly used data transfer format is JSON key-value pair string format, whereas in the general ORM full-mapping or semi-mapping technology, the data obtained from the backend is often enumerable or list<t> type data, so a general class is made, Implements the conversion of data of type list<t> to JSON-formatted data. The code is as follows:

First, a base class reflect based on reflect is established to implement an assignment or value operation on a property named a given string:

1 usingSystem;2 usingSystem.Collections.Generic;3 usingSystem.Collections;4 usingSystem.Linq;5 usingSystem.Text;6 usingSystem.Reflection;7 8 namespacereflectionlearning9 {Ten     classReflect One     { A         PrivateType _type; -         Private Object_obj; -         PrivatePropertyInfo _propertyinfo; the  -          PublicReflect (Objectobj) -         { -              This. _obj =obj; +_type =obj.            GetType ();  -         } +  A         /// <summary> at         ///Get property values by reflection, passing in property names -         /// </summary> -         /// <param name= "name" ></param> -         /// <returns></returns> -          Public ObjectGetValue (stringName) -         { in_propertyinfo =_type. GetProperty (Name); -             Objectresult = _propertyinfo.getvalue (_obj,NULL); to             returnresult; +         } -  the         /// <summary> *         ///Pass in Property name, property value, complete property assignment Operation $         /// </summary>Panax Notoginseng         /// <param name= "name" ></param> -         /// <param name= "value" ></param> the          Public voidSetValue (stringName,Objectvalue) +         { A_propertyinfo =_type. GetProperty (Name); the_propertyinfo.setvalue (_obj,value,NULL); +         } -     } $}

In a generic class, a reference is made to the reflect class, and then a key-value pair is transformed by traversing each of the properties of each T class in list<t>:

1 usingSystem;2 usingSystem.Collections.Generic;3 usingSystem.Linq;4 usingSystem.Data;5 usingSystem.Text;6 7 namespacereflectionlearning8 {9     classvalueturningTen     { One         PrivateReflect Reflect; A         Private string[] parms; -         PrivateDataTable DT; -         PrivateList<type>resultlist; the  -         //with the data source DT, the attribute list parms, the original list (where elements are defined but not instantiated) Outlist -         //Initialize this class -          PublicValueturning (DataTable Dt,string[] Parms, list<type>outlist) +         { -DT =Dt; +Parms =Parms; AResultlist =outlist; at beginturning (); - getjsonfromlist (resultlist); -         } -  -         /// <summary> -         ///iterate through the elements in the list, assigning their properties to the query results in DT in         /// </summary> -          Public voidbeginturning () to         { +             Objectobj; -             //iterate through every element in a list the              for(inti =0; i < dt. Rows.Count; i++) *             { $                 //accesses the current element to initialize the reflect reflection classPanax Notoginsengobj =Resultlist[i]; -reflect =NewReflect (obj); the  +                 //iterate through each property in this element and assign a value to it A                  for(intj =0; J < Parms. Length; J + +) the                 { +                     //Setting Properties - reflect. SetValue (Parms[j], dt. ROWS[I][PARMS[J]]); $                 } $  - tmpreset (obj); -             } the         } - Wuyi         /// <summary> the         ///Convert to JSON string with elements in resultlist as data sources -         /// </summary> Wu         /// <returns>JSON string</returns> -          Public stringGetjsonfromlist (list<type>resultlist) About         { $StringBuilder Strbuilder =NewStringBuilder (); -             if(Resultlist.count <=0) -             { -                 return ""; A             } +             Else the             { -                 intnum=Resultlist.count; $                 intindex =0; the                 Objectobj; the                  for(; index < num; index++) the                 { theobj =Resultlist[index]; -reflect =NewReflect (obj); in                     stringParm =Parms[index]; theStrbuilder.append ("{"); the strbuilder.append (Couple (parm, reflect. GetValue (Parm). ToString ())); AboutStrbuilder.append ("}"); the                     if(Index! = num-1) theStrbuilder.append (","); the tmpreset (obj); +                 } -                 returnstrbuilder.tostring (); the             }Bayi         } the  the         //initialization of temporary objects -         Private voidTmpreset (Objectobj) -         { theobj =NULL; thereflect =NULL; the         } the  -         //Convert Key-value pairs to "str1": "str2" Form the          Public stringCouplestringSTR1,stringstr2) the         { the             return("\""+ str1 +"\":\""+ str2 +"\"");94         } the     } the}

Convert a list generic data source to a JSON string based on reflect