c# - Mapping Data Annotation of a Model object to Custom Class object .net mvc -

i'm wondering how map model object more generic class object , saving values of dataannotation specified field.

my example model example. want map 1 model object 1 fieldsetmodel object, contain list of model fields value, , alla metadata provided dataannotation.

• model.name -> fieldset.formmodel[1].id
• model.name ->fieldset.formmodel[1].name
• model.(dataannotation(maxlenght) -> fieldset.formmodel[1].maxlenght
• model.(dataannotation(display) -> fieldset.formmodel[1].displayname

etc..

model

    public virtual int32 id { get; protected set; }     #region login     [required,maxlength(30)]     [display(name = "nome utente")]     public virtual string username { get; set; }      [required, maxlength(200),datatype(datatype.emailaddress)]     [display(name = "email")]     public virtual string email { get; set; }      [required]     [display(name = "password"),datatype(datatype.password),minlength(6)]     [stringlength(100, errormessage="la lunghezza di {0} deve essere di almeno {2} caratteri.", minimumlength=6)]     public virtual string password { get; set; }     #endregion 

fieldsetmodel , want map values , dataannotationvalues class related view:

   public class fieldsetmodel {     public string title;     public list<field> formmodel = new list<field>();  }  public class field{     public string id            { get; private set; }     public string name          { get; private set; }     public string displayname;     public string datatype = "text";     public int maxlenght = 100;     public int minlenght = 0;     public string formaterrormessage =  "formato non valido";     public string rangeerrormessage =   "range non valido";     public string requirederrormessage = "valore  non corretto";     public string pattern;     public string displayformat;      public string value;     public bool error;      public field(string name)     {         this.name = name;         this.id = name;     } } 

as have mentioned can attributes information question: how retrieve data annotations code? (programmatically)

public static t getattributefrom<t>(this object instance, string propertyname) t : attribute {     var attrtype = typeof(t);     var property = instance.gettype().getproperty(propertyname);     return (t)property .getcustomattributes(attrtype, false).first(); } 

getting properties , values quite simple using reflection. can refer question: how list of properties of class?

class foo {     public int {get;set;}     public string b {get;set;} } ... foo foo = new foo {a = 1, b = "abc"}; foreach(var prop in foo.gettype().getproperties(bindingflags.public)) {     console.writeline("{0}={1}", prop.name, prop.getvalue(foo, null)); }