selected value for dropdownbox in asp.net mvc using selectlist

Question

i have following selectlist for dropdownbox in aspnet mvc.

This is the editEmployee Action controller, so while edit page is displayed i want to display a selectvalue in dropdownbox,since "SelectList" takes 3 parameters one for value,one for text and other is for selected value, here i'm not getting what should i pass in 3rd parameter, coz its asking an object for selected value.


ViewData["DepartmentList"] = new SelectList(DepartmentRepository.GetDepartmentsBySchoolIdInList(ViewData["schoolId"].ToString()),"DepartmentId","DepartmentTitle");

here is the view


=Html.DropDownList("DepartmentList")

See my DDL tutorials asp.net/mvc/tutorials/javascript/… and blogs.msdn.com/b/rickandy/archive/2012/01/09/… — RickAndMSFT
– RickAndMSFT, Commented Feb 14, 2012 at 19:25

taylonr · Accepted Answer · 2010-05-25 13:56:31Z

1

var deptList = DepartmentRepository.GetDepartmentsBySchoolIdInList(ViewData["schoolId"].ToString());

ViewData["DepartmentList"] = new SelectList(DepartmentRepository.GetDepartmentsBySchoolIdInList(deptList,"DepartmentId",deptList.First());

answered May 25, 2010 at 13:56

taylonr

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3 Comments

FosterZ Over a year ago

this is giving first item as selected value, but i want selected value as per value that the employee is assigned to department.

taylonr Over a year ago

I gave this as an example, you asked what you pass in. You pass in the object you want selected. So if it's not first, that's fine. You could do something like deptList.Where(x => x.Dept == "IT").First()

taylonr Over a year ago

Basically the third argument is the object you want to set the value to. So if you have an employee you could set the third argument to employee.Department

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