asp.net template engine razor invoke an external method usage instance

First use the razor steps: Read cshtml, parse cshtml and specify CacheName.

And this step is repetitive, in order to follow the dry principle, encapsulate this code as a Razorhelper () method

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public class Razorhelper {public static string Parserazor (HttpContext context, string Cshtmlvirtualpath, object model) { String FullPath = context. Server.MapPath (Cshtmlvirtualpath); String cshtml = File.readalltext (FullPath); String cachename = FullPath + file.getlastwritetime (fullpath); String html = Razor.parse (cshtml,model,cachename); return HTML; } }

How to call an external method with razor in cshtml

1. The namespace of the class where Test1 and Test2 are referenced first in the cshtml file

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@using webtest1.razordemo;<!--Test1 and test2 the namespace of the class--> <! DOCTYPE html>

2. Call Razorhelper.parserazor () in a generic handler to return the read cshtml file to the customer

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public void ProcessRequest (HttpContext context) {context. Response.ContentType = "text/html"; String html = Razorhelper.parserazor (context, @ "~/razordemo/razor2.cshtml", null); Context. Response.Write (HTML); }

Why would you call a method in a cshtml file?

First look at a tedious, insert the checkbox in the cshtml processing

1. General processing procedures

1 2	BOOL gender = true; String html = Razorhelper.parserazor (context, @ "~/razordemo/razor2.cshtml", new {Gender = Gender});

2. cshtml the checked state of the checkbox in the file

<input type= "checkbox" @ (Model.gender?) Checked ":" ")/>
<!--parentheses change the precedence, otherwise the compiler will treat the expression following the point model as a string-->

Is it messy? Virgo cannot endure.

We know that methods can encapsulate some repetitive code and invoke methods to make cshtml pages more concise.

As an example:

To insert a checkbox on the cshtml page.

1. First encapsulate a checkbox () method

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public static rawstring CheckBox (string name, string ID, bool ischecked) {StringBuilder sb = new StringBuilder (); sb. Append ("<input type= ' checkbox ' id= ')". Append (ID). Append ("'"). Append ("Name= '"). Append (name). Append ("'"); if (ischecked) {sb. Append ("checked"); } sb. Append ("/>"); Return to New Rawstring (sb.) ToString ()); }

2. Read and parse cshtml files in general handlers

 

1 2	String html = Razorhelper.parserazor (context, @ "~/razordemo/razor2.cshtml", null); Context. Response.Write (HTML);

3. Call the checkbox () method in the Cshtml file to insert the checkbox into the cshtml

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@using webtest1.razordemo;<!--Test1 and test2 the namespace of the class--> <! DOCTYPE html>