Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

Default value is not being set in my SelectList in MVC4 View

Posted on 2014-04-04
3
Medium Priority
?
400 Views
Last Modified: 2014-04-14
I have a View that displays a dropdown using the following in my view:

@Html.DropDownListFor(model => model.databaseServerTypeID, (SelectList)@ViewBag.databaseServerTypeID, "-- Choose Server Type --")

Open in new window


My Controller has the following code:
BusinessLogic bl = new BusinessLogic();
SelectList slServerType = bl.CreateServerTypeSelectList(_repository, appcatalog_database.databaseServerTypeID);
ViewBag.databaseServerTypeID = slServerType;
return View(appcatalog_database);

Open in new window


The CreateServerTypeSelectList is defined as follows:
        public SelectList CreateServerTypeSelectList(IAppCatalogContainerRepository repository, int defaultServerType)
        {
            IEnumerable<AppCatalog_ServerType> db;
            db = repository.GetAllServerTypes();           

            SelectList sl;
            if (defaultServerType == 0)
                sl = new SelectList(db, "servertypeID", "servertypeName");
            else
                sl = new SelectList(db, "servertypeID", "servertypeName", defaultServerType);
            
            return sl;
        }

Open in new window


I verified after the list is created that the SelectedValue is 2 which is the same value as the databaseServerTypeID in my model.  (see attached picture)

My view has the following code for displaying the dropdown:
        <div class="editor-field">
            @Html.Label("Server Type", new { @class = "editor-label" }) :
            @Html.DropDownListFor(model => model.databaseServerTypeID, (SelectList)@ViewBag.databaseServerTypeID, "-- Choose Server Type --")
            <span class="error-msg">@Html.ValidationMessageFor(model => model.databaseServerTypeID)</span>
        </div>

Open in new window


I verified that the list in the ViewBag still has the SelectedValue set to 2 and it does (see attached picture).

I've reviewed other posts and it seems like I am doing everything correctly but I can't get the default value to be selected.  Any help is greatly appreciated!
CreateServerTypeSelectList.fw.png
CreateServerTypeSelectListinView.png
0
Comment
Question by:dyarosh
  • 2
3 Comments
 
LVL 96

Expert Comment

by:Bob Learned
ID: 39979968
I am not sure what the problem is, but I am not a big fan of the ViewBag as a viable way to pass stuff to the view.

I prefer the strong-typed ViewModel over the dynamic ViewBag.  

Here is an article that talks about the ViewModel:

Part 3: Views and ViewModels
http://www.asp.net/mvc/tutorials/mvc-music-store/mvc-music-store-part-3
0
 

Accepted Solution

by:
dyarosh earned 0 total points
ID: 39989691
I finally found the problem.  The variable that I used in the ViewBag was the same name as the field in my model.  When I changed the ViewBag variable to ViewBag.ServerTypeList, the default value is getting set.  There must have been some confusion with the names being the same.
0
 

Author Closing Comment

by:dyarosh
ID: 39998544
I had not received any help from the Experts in a while so I kept trying different things until I finally got it to work.
0

Featured Post

Become an Android App Developer

Ready to kick start your career in 2018? Learn how to build an Android app in January’s Course of the Month and open the door to new opportunities.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
A long time ago (May 2011), I have written an article showing you how to create a DLL using Visual Studio 2005 to be hosted in SQL Server 2005. That was valid at that time and it is still valid if you are still using these versions. You can still re…
Despite its rising prevalence in the business world, "the cloud" is still misunderstood. Some companies still believe common misconceptions about lack of security in cloud solutions and many misuses of cloud storage options still occur every day. …
Enter Foreign and Special Characters Enter characters you can't find on a keyboard using its ASCII code ... and learn how to make a handy reference for yourself using Excel ~ Use these codes in any Windows application! ... whether it is a Micr…
Suggested Courses

572 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question