User1608082067 posted
Hello,
On a view I am displaying a list of categories using a DropDownList:
<%= Html.DropDownList(null, "Categories") %>
On my controller I am using an object as ViewData named PostViewData which includes:
- Post: an object with the properties PostID, Title, Body and Category
- Categories: a SelectList with all categories;
So on Create action of my controller I do the following:
private PostViewData viewData = new PostViewData();
viewData.Targets = new SelectList(GetCategories(), "Value", "Key");
On my Edit view I do the following:
PostPaper paper = (from p in database.Posts
where s.PostID == id
select new PostPaper {
Post = p
}).SingleOrDefault();
string category = GetCategories().Where(c => c.Value == paper.Post.Category).FirstOrDefault().Key;
viewData.Categories = new SelectList(GetCategories(), "Value", "Key", target ?? "");
So now I have the DropDownList with the Post Category selected.
Now the problem. On my Insert view I have:
1 PostPaper paper = new PostPaper();
2 UpdateModel(paper.Post, new[] { "Title", "Body" });
3
4 SelectList categories;
5 UpdateModel(categories, new[] { "Categories" });
6
7 paper.Post.Category = categories.SelectedValue.ToString();
Use of unassigned local variable 'categories' on line 5.
This is because I am not able to do something like?
SelectList categories = new SelectList();
or
SelectList categories = new SelectList.Empty();
Anyway, I just feel that I am doing something wrong on the way I am filling my DropDownList.
I need to agree that the previous Html.Select seemed to have more sense as someone suggested in
http://forums.asp.net/t/1318112.aspx
Anyway, what should I do?
Thanks,
Miguel
