c# - MVC RegEx Triggers Validation Before page Load -

my applicationcontroller:

public class applicationcontroller : controller {    private iuxrepository _repository;    public applicationcontroller(iuxrepository repository)    {      _repository = repository;    }     public actionresult create()    {       return view("shape", new applicationviewmodel());    } } 

my applicationviewmodel

public class applicationviewmodel : viewmodelbase {     public applicationviewmodel()     {         application = new application();     }      public application application {get;set;} } 

my application model:

public class application : dbentity {     public string name {get;set;}      [display(name = "proposed release date"),      regularexpression(@"(^q[1-4])\s(2\d{3})", errormessage = "date needs in format q{1-4}{space}20{yy} e.g. q4 2013 or q1 2014")]     public string proposedreleasedate {get;set;} } 

extract shape view:

<div class="editor-label"> @html.displayfor(model => model.proposedreleasedate) </div>  <div class="editor-field"> @html.editorfor(model => model.proposedreleasedate) @html.validationmessagefor(model => model.proposedreleasedate) </div> 

when try , load shape view, reason comes validation error saying proposedreleasedate doesn't meet required regularexpression.

of course doesn't because it's new entity waiting input, why validating before page has loaded up. validating early. how bypass this, or turn feature off, counter intuitive/productive imho.

the errormessage format not correct. instead of

errormessage = "date needs in format q{1-4}{space}20{yy} e.g. q4 2013 or q1 2014" 

make it

errormessage = "date needs in format q{{1-4}}{{space}}20{{yy}} e.g. q4 2013 or q1 2014" 

note "{" "{{" , "}" "}}"

edit: related link how escape braces (curly brackets) in format string in .net