There is no ViewData item of type "IEnumerable <SelectListItem>" that has the key "key"
My code is like this
namespace DiagnosisApp.Models
{
public class ProcedurePrice
{
public int ID { get; set; }
public int DepartmentID { get; set; }
public int ProcedureID { get; set; }
public int InsuranceProviderID { get; set; }
public int ProcedureCategoryID { get; set; }
public int ProcedureSubCategoryID { get; set; }
[ForeignKey("ID")]
public virtual Department Department { get; set; }
[ForeignKey("ID")]
public virtual InsuranceProvider InsuranceProvider { get; set; }
[ForeignKey("ID")]
public virtual ProcedureCategory ProcedureCategory { get; set; }
[ForeignKey("ID")]
public virtual ProcedureSubCategory ProcedureSubCategory { get; set; }
}
}
controller
public ActionResult Create()
{
ViewBag.DepartmentID = new SelectList(db.Departments, "ID", "Name");
ViewBag.ProcedureSubCategoryID = new SelectList(db.ProcedureSubCategories, "ID", "Name");
return View();
}
And in my opinion
@Html.DropDownList("ProcedureID", null, new { @class = "form-control" })
@Html.ValidationMessageFor(model => model.ProcedureID)
Everything looks good to me, but it throws an error
There is no ViewData item of type 'IEnumerable<SelectListItem>' that has the key 'ProcedureID'.
Can anyone point out what I am doing wrong here?
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The error is that you are putting it in ViewBag.ProcedureSubCategoryID
while you are passing an ProcedureID
int Html.DropDownList()
and also passing a SelectList
parameter null
. A quick fix is to simply replace ProcedureSubCategoryID
with ProcedureID
in Html.DropDownList()
as the key in the first parameter:
you have three ways to solve this problem.
Method 1:
Instead of passing null
in a second parameter that takes a type SelectList
, you can do something like this:
@Html.DropDownList("ProcedureID", ViewBag.ProcedureSubCategoryID as SelectList, new { @class="form-data" })
Way2:
public ActionResult Create()
{
ViewBag.DepartmentID = new SelectList(db.Departments, "ID", "Name");
ViewBag.ProcedureSubCategoryID = new SelectList(db.ProcedureSubCategories, "ID", "Name");
return View();
}
@Html.DropDownList("ProcedureSubCategoryID", null, new { @class = "form-control" })
Method 3:
or an alternative is to store it in ProcedureID
in your action:
public ActionResult Create()
{
ViewBag.DepartmentID = new SelectList(db.Departments, "ID", "Name");
ViewBag.ProcedureID = new SelectList(db.ProcedureSubCategories, "ID", "Name");
return View();
}
and in the view:
@Html.DropDownList("ProcedureID", null, new { @class = "form-control" })
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You are using a partial file
if you are using partial, it is very simple, you may find a solution by mistake this error says you don't have View Data With type SelectListItem, that the key was "ProcedureId", I think you are using Partial for your creation and call it on your index page So you have to pass this code on the result of the index action just like my code:
public ActionResult Index()
{
ViewData["ProcedureID"] = new SelectList(db.Procedures, "ProcedureId", "ProcedureName");
return View();
}
public ActionResult Create()
{
return View();
}
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