How do I define a method in Razor

Question

User · Answer

You mean inline helper    helper SayHello string name         lt div gt Hello  name lt  div gt      SayHello  John

User · Answer

MyModelVm cs  public class MyModelVm       public HttpStatusCode StatusCode   get  set        Index cshtml   model MyNamespace MyModelVm  functions       string GetErrorMessage                 var isNotFound   Model StatusCode    HttpStatusCode NotFound          string errorMessage          if  isNotFound                        errorMessage   Resources NotFoundMessage                    else                       errorMessage   Resources GeneralErrorMessage                    return errorMessage            lt div gt       GetErrorMessage    lt  div gt

User · Answer

It s very simple to define a function inside razor     functions        public static HtmlString OrderedList IEnumerable lt string gt  items              So you can call a the function anywhere  Like   Functions OrderedList new      Blue    Red    Green       However  this same work can be done through helper too  As an example   helper OrderedList IEnumerable lt string gt  items        lt ol gt           foreach var item in items                lt li gt  item lt  li gt                 lt  ol gt      So what is the difference   According to this previous post both  helpers and  functions do share one thing in common - they make code reuse a possibility within Web Pages  They also share another thing in common - they look the same at first glance  which is what might cause a bit of confusion about their roles  However  they are not the same  In essence  a helper is a reusable snippet of Razor sytnax exposed as a method  and is intended for rendering HTML to the browser  whereas a function is static utility method that can be called from anywhere within your Web Pages application  The return type for a helper is always HelperResult  whereas the return type for a function is whatever you want it to be

User · Answer

You could also do it with a Func like this         var getStyle   new Func lt int  int  string gt   width  margin    gt  string Format  width   0 px  margin   1 px    width  margin        lt div style   getStyle 50  2   gt  lt  div gt

User · Answer

You can also just use the      block to create functions          async Task lt string gt  MyAsyncString string input                return Task FromResult input             Then later in your razor page       lt div gt   await MyAsyncString  weee   ConfigureAwait false   lt  div gt

User · Answer

Razor is just a templating engine   You should create a regular class     If you want to make a method inside of a Razor page  put them in an  functions block

User · Answer

You can simply declare them as local functions in a razor block  i e                int Add int x  int y                return x   y            lt div class  container  gt       lt p gt           Add 2  5       lt  p gt   lt  div gt

User · Answer

Leaving alone any debates over when  if ever  it should be done   functions is how you do it    functions           Add code here

[c#] How do I define a method in Razor?

Examples related to c#

Examples related to asp.net-mvc

Examples related to asp.net-mvc-3

Examples related to razor