asp.net mvc - Advantages and Disadvantages of having a ViewModel for every Model -


this question has answer here:

i have mvc app pass models controllers. have handful of situations use viewmodel crud operations done directly. have data annotations on each property in model class use validate model. have heard better practice use viewmodels- 1 each view. seems me unnecessary , programmers nightmare far maintenance concerned. wondering if agreed or disagreed me on this?

i think terms "model" , "viewmodel" confused.

in microsoft-tutorial-mvc-world "model" maps directly database "entity" , can perform crud operations. in medium-large scale asp.net mvc app this.

therefore, build set of "view-related-business-objects" pass backward , forward , views. call them "models" if like. call them "viewmodels" if like. doesn't matter. perform same function. both put "m" in "mvc".


Comments

Post a Comment

Popular posts from this blog

ios - iPhone/iPad different view orientations in different views , and apple approval process -

i force app's home screen portrait , other views landscape. apple rejects app if this? if not , how force first screen launch in portrait mode? , force other screens launch in landscape. this not duplicate question search every possible answer in website. i force app's home screen portrait , other views landscape. apple rejects app if this? no apple not reject app this. have lot of apps doesn't support orientation. forcing on 1 screen won't cause app reject. if not , how force first screen launch in portrait mode? , force other screens launch in landscape. can on write : -(nsuinteger)supportedinterfaceorientations; function.
Read more

monitor web browser programmatically in Android? -

i've got tricky question here. need users make payment bank (namely barclaycard) in uk. so, have https url , add parameters (such amount pay, order reference, etc) url, start http connection intent.actionview, redirect user browser can enter credit card details on bank's webpage , make payment our account successfully. far ? the code use below (i changed values privacy reasons) problem is, need app when user has completed/failed/cancelled payment. barclaycardautomatically redirects particular url when payment has succeeded, 1 if failed. there no way of knowing when barclaycard payment has succeeded go android app somehow ? button cardbutton = (button) findviewbyid(r.id.card_button); cardbutton.setonclicklistener(new view.onclicklistener() { @override public void onclick(view arg0) { string prehashstring = new string(); string prohashstring = new string(); string shapassphrase = new string(); shapassphrase = "gsvth£h70zkh...
Read more

c# - Using multiple datasets in RDLC -

i working on rdlc reports, , reports work fine. got stuck when added 1 more dataset rdlc file. on adding dataset, added data source well. ran project, , report no more working giving error: a data source instance has not been supplied data source can 1 please guide me on steps take in order use multiple datasets. using visual studio 2012. multiple datasources added follows: reportviewer1.localreport.datasources.add(rds); reportviewer1.localreport.datasources.add(rds1); refer link: http://www.c-sharpcorner.com/uploadfile/robo60/standalonerdlcreports11142007183516pm/standalonerdlcreports.aspx all parts covered in this. also refer usefull discussion: http://forums.asp.net/t/1241964.aspx
Read more