How to write a simple Html DropDownListFor

Question

In ASP NET MVC 2  I d like to write a very simple dropdown list which gives static options  For example I d like to provide choices between  Red    Blue   and  Green

User · Answer

using  Html BeginForm           lt p gt Do you like pizza           Html DropDownListFor x   gt  x likesPizza  new                 new SelectListItem    Text    Yes   Value   bool TrueString               new SelectListItem    Text    No   Value   bool FalseString              Choose an option         lt  p gt       lt input type    submit  value    Submit my answer    gt       I think this answer is similar to Berat s  in that you put all the code for your DropDownList directly in the view  But I think this is an efficient way of creating a y n  boolean  drop down list  so I wanted to share it   Some notes for beginners    Don t worry about what  x  is called - it is created here  for the first time  and doesn t link to anything else anywhere else in the MVC app  so you can call it what you want -  x    model    m  etc  The placeholder that users will see in the dropdown list is  Choose an option   so you can change this if you want  There s a bit of text preceding the drop down which says  Do you like pizza   This should be complete text for a form  including a submit button  I think   Hope this helps someone

User · Answer

Avoid of lot of fat fingering by starting with a Dictionary in the Model  namespace EzPL8 Models       public class MyEggs               public Dictionary lt int  string gt  Egg   get  set             public MyEggs                         Egg   new Dictionary lt int  string gt                                    0   No Preference                      1   I hate eggs                      2   Over Easy                      3   Sunny Side Up                      4   Scrambled                      5   Hard Boiled                      6   Eggs Benedict                                   In the View convert it to a list for display   Html DropDownListFor m   gt  m Egg Keys                           new SelectList                               Model Egg                                 Key                                  Value

User · Answer

lt          Html DropDownListFor             model   gt  model Color              new SelectList                    new List lt Object gt                           new   value   0   text    Red                             new   value   1   text    Blue                            new   value   2   text    Green                                             value                      text                      Model Color                          gt    or you can write no classes  put something like this directly to the view

User · Answer

With  Please select one Item     Html DropDownListFor model   gt  model ContentManagement Send Section    new List lt SelectListItem gt    new SelectListItem   Value    0   Text    Plese Select one Item           Concat db NameOfPaperSections Select x   gt  new SelectListItem   Text   x NameOfPaperSection  Value   x PaperSectionID ToString          new    class    myselect         Derived from the codes  Master Programmer  amp  amp  Joel Wahlund   King Reference   https   stackoverflow com a 1528193 1395101 JaredPar      Thanks Master Programmer  amp  amp  Joel Wahlund  amp  amp  JaredPar      Good luck friends

User · Answer

Hi here is how i did it in one Project          Html DropDownListFor model   gt  model MyOption                                    new List lt SelectListItem gt                            new SelectListItem   Value    0    Text    Option A                            new SelectListItem   Value    1    Text    Option B                            new SelectListItem   Value    2    Text    Option C                                             new    class  myselect      I hope it helps Somebody  Thanks

User · Answer

Or if it s from a database context you can use    Html DropDownListFor model   gt  model MyOption  db MyOptions Select x   gt  new SelectListItem   Text   x Name  Value   x Id ToString

User · Answer

See this MSDN article and an example usage here on Stack Overflow   Let s say that you have the following Linq POCO class   public class Color       public int ColorId   get  set        public string Name   get  set        And let s say that you have the following model   public class PageModel       public int MyColorId   get  set        And  finally  let s say that you have the following list of colors  They could come from a Linq query  from a static list  etc    public static IEnumerable lt Color gt  Colors   new List lt Color gt         new Color           ColorId   1          Name    Red             new Color           ColorId   2          Name    Blue             In your view  you can create a drop down list like so    lt    Html DropDownListFor n   gt  n MyColorId                            new SelectList Colors   ColorId    Name      gt

[c#] How to write a simple Html.DropDownListFor()?

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