In ASP. net mvc, how to enable the ascx user control to have an action/Controller

Generally, in the MVC page, we use the ascx user control to write:

<% = Html. Partial ("adminviewleftmenu") %>

Or write as follows:

<% Html. renderpartial ("~ /Areas/util/views/shared/selectgroup. ascx "); %> 

The difference between the above two reference methods:

Html. renderpartial is directly output to the current httpcontext, while HTML. Partial directly generates a string and returns the View content. Therefore, when referencing, the difference is <% html. renderpartial ("~ /Areas/util/views/shared/selectgroup. ascx "); %> and <% = html. Partial ("~ /Areas/util/views/shared/selectgroup. ascx "); %>.

When you need to add an action to the ascx user control, we need to reference it as follows:

<% Html. renderaction ("Index", "sectiongroup"); %>

The action is as follows:

 Using System;  Using  System. Collections. Generic;  Using  System. LINQ;  Using  System. Web;  Using  System. Web. MVC;  Namespace  Educationmanage. Areas. util. controllers {  Using  Utility. JSON;  Using Educationmanage. Areas. util. models;  Public   Class  Sectiongroupcontroller: controller {  //            //  Get:/util/sectiongroup/ Selectgroupentities = New  Selectgroupentities ();  Public  Actionresult index () {list <Sg_admission_batchs> admissionbatchlist =Selectgroupentities. admission_batchs.tolist (); selectlist admissionbatch = New Selectlist (admissionbatchlist, "  Admission_batch_id  " , "  Name  " , ""  ); Viewdata. Add (  "  Admissionbatch  " , Admissionbatch); List <Sg_education_levels> educationlevellist = Selectgroupentities. education_levels.tolist (); selectlist educationlevel = New Selectlist (educationlevellist, "  Education_id  " , "  Name  " , ""  ); Viewdata. Add (  " Educationlevel  "  , Educationlevel); List <Sg_professional> professionallist = Selectgroupentities. Professional. tolist (); selectlist professional = New Selectlist (explorsionallist, "  Prefessional_code  " , "  Name  " , "" ); Viewdata. Add (  "  Professional  "  , Professional );  ReturnPartialview ("~ /Areas/util/views/shared/sectiongroup. ascx"  );}}}
 

For more information, seeArticle: Http://leelei.blog.51cto.com/856755/412702/