ASP. net mvc displays views using the AderTemplate Engine

ASP. net mvc displays views using the AderTemplateEngine template engine

 

1. Create the location class for the ArtTemplateViewLocator View File. The Code is as follows:

Namespace ArtLib

{

Class ArtTemplateViewLocator: ViewLocator

{

Public ArtTemplateViewLocator ()

{

Base. ViewLocationFormats = new string [] {"~ /Views/{1}/02.16.htm ",

"~ /Views/{1}/02.16.html ",

"~ /Views/Shared/share0).htm ",

"~ /Views/Shared/custom 02.16.html"

};

Base. MasterLocationFormats = new string [] {""};

 

}

}

}

 

2. Create a VariableResolver class for parsing the AdrTemplate template view and register the custom component TagList. The Code is as follows:

Namespace ArtLib

{

Public static class VariableResolver

{

Public static object ArtTemplateResolve (string filePath, IDictionary viewData)

{

// Initialize the template engine

TemplateManager template1 = TemplateManager. FromFile (filePath );

// Set template data

Template1.SetValue ("ViewData", viewData );

// Register a custom tag

Template1.RegisterCustomTag ("list", new TagList ());

 

Return template1.Process ();

}

}

}

3. Create the ArtTemplateViewEngine class to process view requests and assign ViewData to the template engine. The Code is as follows:

IViewLocator _ viewLocator = null;

 

Public IViewLocator ViewLocator

{

Get

{

If (this. _ viewLocator = null)

{

This. _ viewLocator = new ArtTemplateViewLocator ();

}

Return this. _ viewLocator;

}

Set

{

This. _ viewLocator = value;

}

}

 

Public string TemplatePath {get; set ;}

 

# Region IViewEngine Member

 

Public void RenderView (ViewContext viewContext)

{

String viewLocation = ViewLocator. GetViewLocation (viewContext, viewContext. ViewName );

If (string. IsNullOrEmpty (viewLocation ))

{

Throw new InvalidOperationException (string. Format ("View {0} cocould not be found.", viewContext. ViewName ));

}

 

String viewPath = HttpContext. Current. Request. MapPath (viewLocation );

 

// Template Parsing is as follows

 

String viewTemplate = VariableResolver. ArtTemplateResolve (viewPath, viewContext. ViewData) as string;

 

HttpContext. Current. Response. Write (viewTemplate );

 

}

 

# Endregion

4. Create the ArtTemplateControllerFactory class for Golbal. asax to bind views. The Code is as follows:

Namespace ArtLib

{

Public class ArtTemplateControllerFactory: DefaultControllerFactory

{

Protected override IController CreateController (RequestContext requestContext, string controllerName)

{

Controller controller = (Controller) base. CreateController (requestContext, controllerName );

Controller. ViewEngine = new ArtTemplateViewEngine (); // modify the default view engine for the view engine we just created

Return controller;

}

 

}

}

5. Create a custom template label class: TagList. cs is used to display the data list. The Code is as follows:

Namespace ArtLib

{

Public class TagList: ITagHandler

{

# Region ITagHandler Member

 

Public void TagBeginProcess (TemplateManager manager, Ader. TemplateEngine. Parser. AST. Tag tag Tag, ref bool processInnerElements, ref bool captureInnerContent)

{

ProcessInnerElements = true;

CaptureInnerContent = true;

}

 

Public void TagEndProcess (TemplateManager manager, Ader. TemplateEngine. Parser. AST. Tag tag, string innerContent)

{

Expression exp;

 

Exp = tag. AttributeValue ("pageSize ");

If (exp = null)

Throw new Exception ("Missing attribute: pageSize ");

 

String pageSize = manager. EvalExpression (exp). ToString ();

 

Exp = tag. AttributeValue ("currentPage ");

If (exp = null)

Throw new Exception ("Missing attribute: currentPage ");

 

String currentPage = manager. EvalExpression (exp). ToString ();

Business business = new BusinessLogic ();

List <InformationSimple> list = new List <InformationSimple> ();

If (string. IsNullOrEmpty (pageSize ))

{

List = business. Select <InformationSimple> ();

}

Else

{

Page page = new Page ();

Page. PageSize = Convert. ToInt32 (pageSize );

Page. CurrentPage = Convert. ToInt32 (currentPage );

List = business. SelectByPage <InformationSimple> (ref page );

}

String html = "";

Foreach (InformationSimple info in list)

{

Html = html + "<tr> <td>" + info. InfoTitle + "</td> </tr> ";

}

Html = "<table>" + html + "</table> ";

Manager. WriteValue (html );

 

}

 

# Endregion

}

6. Modify the Application_Start () method of the Global. asax file of the ASP. net mvc test project and add the custom controller factory class: ArtTemplateControllerFactory. The Code is as follows:

Protected void Application_Start ()

{

ControllerBuilder. Current. SetControllerFactory (typeof (ArtTemplateControllerFactory ));

RegisterRoutes (RouteTable. Routes );

 

}

7. Create the template file Views/Home/Index.htm. The Code is as follows:

<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">

<Html xmlns = "http://www.w3.org/5o/xhtml">

<Head>

<Title> </title>

</Head>

<Body>

<Ad: list pageSize = "10" currentPage = "1"> </ad: list>

# ViewData ["Title"] #

</Body>

</Html>