c# - returning success/failure message to view after database update -


i display status message user after update profile page indicate whether successful or not. here have:

controller

[httppost] public actionresult profiles(userprofile model) {     try     {         _userrepository.updateuserprofile(model);         viewbag.message = "success";     }     catch     {         viewbag.message = "failure";     }      return view(); }

database call

public void updateuserprofile(userprofile user) {     using (var connection = new sqlconnection(sqlsettings.getconnectionstring()))     {         var p = new dynamicparameters();         p.add("@id", user.id);         p.add("@city", user.city);         p.add("@state", user.state);         connection.execute("updateuserprofile", p, commandtype: commandtype.storedprocedure);      } }

view

@if (viewbag.message == "success") {     <div class="alert alert-success"><strong><span class="glyphicon glyphicon-check"></span> profile has been updated.</strong></div> } @if (viewbag.message == "failure") {     <div class="alert alert-danger"><span class="glyphicon glyphicon-alert"></span><strong> error, please try again.</strong></div> }

while appears working me, i'm guessing there more logical way?

you should consider switching prg pattern in use case. prg stands post-redirect-get. in approach after finishing transaction (ex :updating user record), return redirect response client browser new location , browser make totally new http call load action method.

you can pass tempdata transfer success message. if there error in completing operation, may use modelstate.addmodelerrormethod add error model state dictionary. 

[httppost] public actionresult profiles(userprofile model) {     try     {         _userrepository.updateuserprofile(model);         tempdata["message"] = "success";         return redirecttoaction("profiles",new { id= model.id });     }     catch     {         modelstate.addmodelerror(string.empty,"some error happened");         return view(model);     } }

now in action(profiles?id=someid), need check tempdata value , display needed.

in case of error, in view(profiles), may use html.validationsummary helper method show error message added model state dictionary.


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