No nonsense MVC getting started tutorial 10 [practice 2: user management]

I. Objectives of this Article

Learn how to create MVC management functions

Ii. Contents of this Article

1. Query

2. Modify

3. Delete

4.CodeDownload

1. Query

1) view code:

 1 @ Model pagedlist <  Mvc3  . Demomodel. User  >  2   @ Using webdiyer. webcontrols. MVC;  3   @ Using (html. beginform ("Main", "manage", formmethod. Get ))  4   { 5       <  Span  > User name: </  Span  >  6   @ Html. Textbox ("username", viewdata ["username"])  7       <  Input  Type  = "Submit"  Value  = "Query"  />  8   }  9   @ Foreach (mvc3.demomodel. User user in Model)  10   {  11 @ User. userid <  Span  > --- </  Span  > @ User. Username <  Span > --- </  Span  >   12 @ Html. actionlink ("modify", "useredit", new {id = user. userid }) <  Span  > --- </  Span  >   13 @ Html. actionlink ("details", "userdetail", new {id = user. userid }) <  Span > --- </  Span  >   14 @ Html. actionlink ("delete", "userremove", new {id = user. userid }) <  Span  > --- </  Span  >   15   16       <  BR  /> 17   }  18   <  BR  />  19   <  BR  />  20   @ Html. Pager (model, new pageroptions  21   {  22   Pageindexparametername = "ID ",  23  Showpageindexbox = true,  24   Firstpagetext = "Homepage ",  25   Prevpagetext = "Previous Page ",  26   Nextpagetext = "next page ",  27   Lastpagetext = "last page ",  28   Pageindexboxtype = pageindexboxtype. Textbox,  29   Pageindexboxwrapperformatstring = "Enter the number of pages {0 }",  30  Gobuttontext = "go"  31   })  32   <  BR  />  33 > A total of @ model. totalitemcount comments @ model. currentpageindex/@ model. totalpagecount are displayed on the page.

2) control code:

 1           Public Actionresult main ( Int ? Id = 1  )  2  {  3 Viewdata [ "  Username  " ] = String  . Empty;  4               If (Request. querystring [ "  Username  " ]! = Null  )  5   { 6 Viewdata [ "  Username  " ] = Request. querystring [ "  Username  "  ]. Tostring ();  7   }  8 List <model. User> userlist = New List <model. User> ();  9              Int Totalcount = 0  ;  10               Int Pageindex = ID ?? 1  ;  11 Userlist = demorepository. User. getlist (viewdata [ "  Username  " ]. Tostring (), 2 , (Pageindex- 1 )* 2 ,Out  Totalcount );  12 Pagedlist <model. User> mpage = userlist. asqueryable (). topagedlist ( 0 , 2  );  13 Mpage. totalitemcount = Totalcount;  14 Mpage. currentpageindex = ( Int ) (ID ?? 1  );  15              Return  View (mpage );  16 }

3) code explanation: the next page after mvcpager is rendered to the client is <a href = "manage/main/1"> </a>, therefore, when querying, you can only submit query conditions to the server in get mode. In view code, we need to modify the form submission method.

 
1@ Using (html. beginform ("Main","Manage", Formmethod. Get ))
 

After receiving the parameters, the parameters are displayed in the text box. viewdata ["username"] is used for data transmission between control and view.

4) The effect is as follows:

2. Modify

1) view code:

 1   @ Model mvc3.demomodel. User 2   @ Using (html. beginform ())  3   {  4   @ Html. labelfor (user => User. username)  5       <  BR  />  6   @ Html. textboxfor (user => User. username)  7       <  BR  /> 8   @ Html. labelfor (user => User. PHONE)  9       <  BR  />  10   @ Html. textboxfor (user => User. PHONE)  11       <  BR  />  12   @ Html. labelfor (user => User. Residential)  13  @ Html. dropdownlistfor (user => User. Residential, (selectlist) viewbag. viewresidential)  14   @ Html. labelfor (user => User. unitno)  15   @ Html. dropdownlistfor (user => User. unitno, (selectlist) viewbag. viewunitno)  16   @ Html. labelfor (user => User. floorno)  17   @ Html. dropdownlistfor (user => User. floorno, (selectlist) viewbag. viewfloorno)  18   @ Html. labelfor (user => User. doorplateno) 19   @ Html. dropdownlistfor (user => User. doorplateno, (selectlist) viewbag. viewdoorplateno)  20       <  BR  />  21   @ Html. hiddenfor (user => User. userid)  22       <  Input  Type  = "Submit"  Value  = "Modify"  />  23 }

2) control code:

 1           Public Actionresult useredit ( Int  ID)  2   {  3               //  Retrieve user information  4               If (ID! = 0  )  5  {  6 Model. User user = demorepository. User. Get ( New Model. User () {userid = Id });  7   8                   //  Retrieve the data and use helper to break down the data  9 Addresshelper = Addresshelper. getinstance ();  10   Addresshelper. getresidetialitem (getlist ());  11                  //  Reselect and upload viewbag to view  12 Viewbag. viewresidential = New Selectlist (addresshelper. residetialitem, "  Value  " , "  Text  "  , User. Residential );  13 Viewbag. viewfloorno = New Selectlist (addresshelper. floornoitem,"  Value  " , "  Text  "  , User. floorno );  14 Viewbag. viewunitno = New Selectlist (addresshelper. unitnoitem, "  Value  " , "  Text  " , User. unitno );  15 Viewbag. viewdoorplateno = New Selectlist (addresshelper. doorplatenoitem, "  Value  " , "  Text  "  , User. doorplateno );  16                   Return  View (User );  17   } 18               Return  View ();  19 }

3) code explanation:

 
1Viewbag. viewresidential =NewSelectlist (addresshelper. residetialitem,"Value","Text", User. Residential );
 

This is to reverse select the data in the database to the view.

4) running effect:

3. Delete

1) view code:

1@ Html. actionlink ("delete", "userremove", new {id = user. userid}, new {@ onclick = "Return confirm ('Are you sure you want to delete it? ');"})<Span>---</Span> 
 

2) control code

 1           //  Delete a user  2           Public   Void Userremove ( Int  ID, formcollection)  3  {  4 Model. User user = New Model. User () {userid = Id };  5   Demorepository. User. Remove (User );  6 MessageBox. showandredirect ( This , "  Deleted successfully!  " , "  /Manage/main/  " );  7 }

3) code explanation:

"Are you sure you want to delete it?" is added to the view ?" Dialog box.

In ciontrol: int ID, formcollection: delete In httppost mode.

4) running effect:

4. Download Code

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