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Value Cannot Be Null Dropdownlist


c# asp.net asp.net-mvc asp.net-mvc-5 asp.net-identity share|improve this question asked Oct 6 '15 at 16:38 Antrim 3491322 I would suggest that your design is not a good user experience. Privacy Statement| Terms of Use| Contact Us| Advertise With Us| CMS by Umbraco| Hosted on Microsoft Azure Feedback on ASP.NET| File Bugs| Support Lifecycle Blog Sign in Join ASP.NET Home Get If your ID properties are not already unique, it suggests a problem with you database structure. Not the answer you're looking for? his comment is here

However this line: new SelectList(ViewBag.Districts, "district_id", "district_name", Model.Districts) will have null as a first parameter, since ViewBag.Districts was not repopulated, causing the exception. In your case you do not want the Id and Users properties of IdentityRole - and consider what happens if a data model used in a dropdownlist had a property that If you used the code from the link then you don't have to do much. I want this AssetTotal value must greater than to 0.

Value Cannot Be Null. Parameter Name Items Dropdownlistfor

waaaaaaaaa it's working properly now. Why does Cutie act like this and lesser robots listen to it? Scheduling a task into a period within a day, depending on whether or not it is a weekend Why is the 'You talking to me' speech from the movie 'Taxi Driver' NO NO NO!

  • Parameter name: source8MVC3 asp.net error: Value cannot be null.
  • Value cannot be null.
  • Does Intel sell CPUs in ribbons?
  • why does this error keep popping out?
  • How does Gandalf end up on the roof of Isengard?
  • Then you return the view in the catch block without even indicating what the error is, further confusing the user.
  • If you're new to MVC, you might find the NerdDinner tutorial useful: wrox.com/WileyCDA/Section/id-321793.html.
  • Refer this answer for an example of how you might implement it –Stephen Muecke Oct 6 '15 at 23:03 add a comment| 3 Answers 3 active oldest votes up vote 2
  • NO NO NO!

Also don't use ViewData and casts. How do you enchant items with Lapis Luzuli? I'm not familiar with Java. Value Cannot Be Null. Parameter Name Source In Mvc This is my controllers for create: // GET: SkillSets/Create public ActionResult Create() { var categoryIDs = db.Categories.Where(c => c.Active == 1).Select(x => x.IDCategory).Distinct(); List items = new List(); foreach (var t

Reply RichardY Contributor 6604 Points 1899 Posts Re: DropDownListFor throwing parameter name cannot be null exception Sep 24, 2014 04:24 PM|RichardY|LINK The dropdownlistfor helper uses the name of the model property Parameter name: value1ASP.NET MVC3: Object from DropdownList in Null in Controller0Cascading DropDownLists - Value cannot be null. What is the significance of the robot in the sand? Thank you mitch for helping :) asp.net dropdownlist mvc null parameter value This question has already been answered.

Forcing everyone to speak the same language C# TBB updating metadata value Why is the 'You talking to me' speech from the movie 'Taxi Driver' so famous? Value Cannot Be Null. Parameter Name Items Mvc 4 Dropdownlist What is the common, normally open, normally closed? Browse other questions tagged c# asp.net asp.net-mvc-5 or ask your own question. GO OUT AND VOTE C# TBB updating metadata value Find the "unwrapped size" of a list Professor Lewin: "Which string will break?" / Me: "That one." / Professor Lewin: "Wrong!" Polyglot

Exception Details: System.argumentnullexception: Value Cannot Be Null. Parameter Name: Items

Parameter:Province i'm using dataset, in this program, i'll attach it here so you can browse it. So can anyone help me figure out why this error is occurring and how to fix it? Value Cannot Be Null. Parameter Name Items Dropdownlistfor Parameter name: value, CreateIdentityAsync?0Value cannot be null. Value Cannot Be Null. Parameter Name Items Mvc4 Dropdownlist Not the answer you're looking for?

Furniture name for waist-high floor-sitting shelf cabinet thing Assigning only part of a string to a variable in bash Was it legal to rant against trick or treating via loudspeaker during this content There is a page which submits some value to the database. asp.net asp.net-mvc view controller dropdownlistfor share|improve this question edited Feb 21 '14 at 21:40 Chris Schiffhauer 9,39194466 asked Aug 21 '13 at 12:23 nielsv 4171243100 Exception is thrown only What is the significance of the robot in the sand? Value Cannot Be Null. Parameter Name Value Asp.net Mvc

Join them; it only takes a minute: Sign up MVC DropDownListFor Value Cannot Be Null up vote 2 down vote favorite 1 i have the code: <%: Html.DropDownListFor( model => model.CompanyName, You can fix this like so: [HttpPost] public ActionResult Create(UserDetail userdetail) { if (ModelState.IsValid) { db.UserDetails.Add(userdetail); db.SaveChanges(); return RedirectToAction("SearchCust"); } userdetail.ProjectDetail = db1.ProjectDetails.ToList(); return View(userdetail); } share|improve this answer answered Jun I am seen in darkness and in light, What am I? weblink You definitely shouldn't pollute your model class w/ values for a select list.

Parameter name: name Source Error: Line 17: Line 18:

Location Worked or Type of Time Off :
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my table adapters are attach here..

From this: @Html.DropDownList("SiteId", new SelectList(ViewBag.ListSiteClass, "SiteId", "SiteName", Model.SiteId), "Select Site") to this: @Html.DropDownListFor(model => Model.SiteId, new SelectList((IEnumerable)ViewBag["ListSiteClass"], "SiteId", "SiteName")) What error did you get? Related 2MVC ListBoxFor raises “value cannot be null” exception40Asp.Net MVC 2 - Bind a model's property to a different named value0ASP.Net MVC returning value of a DropDown0MVC 2: How can I Browse other questions tagged c# asp.net asp.net-mvc asp.net-mvc-4 or ask your own question. System.argumentnullexception Value Cannot Be Null. Parameter Name Items Mvc Was it legal to rant against trick or treating via loudspeaker during halloween?

However, when clicking on "Create", instead of giving an error like "Missing"; it throws a dump. In RegisterViewModel , I only added these lines to the RegisterViewModel: [Display(Name = "Roles List")] public List RolesList { get; set; } [Required (ErrorMessage = "Please Select the Role")] public string Thanks in advance asp asp.net mvc null viewdata "ASP.NET MVC" asp net mvc ASP.NET MVC RC1 -------------------- Dan Maharry Author, Programming ASP.NET 3.5 www.hmobius.com Reply HMobius Member 1 Points 40 Posts check over here ViewBag.ActiveCompanies = new SelectList(someValues, "ID", "Name"); ... } @Html.DropDownListFor(x => x.CompanyID, ViewBag.ActiveCompanies as SelectList, "Your placeholder", new{@class = "class-name"}) share|improve this answer answered May 18 '15 at 15:40 Joe 807813 add

What do you call the practice of using (overly) complex words specific to a subject? Find a mistake in the following bogus proof Is adding the ‘tbl’ prefix to table names really a problem? Actually, the dump occurs only in the server. Now i have filled a … No overload takes 0 parameters 1 reply Background: My store procedure 'GetAtdRecord_Sp' to optionally accept parameter 'EmplID' otherwise default value is null.

still learning ASP.NET Aet This post has been edited by Jayman: 25 September 2009 - 12:29 PM Was This Post Helpful? 0 Back to top MultiQuote Quote + Reply #4 deleon_chesterhomer Value Cannot be null, parameter name: items40Value cannot be null. Join them; it only takes a minute: Sign up MVC3 asp.net error: Value cannot be null. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

Is calling a function with local side-effects twice in the same expression undefined behavior? Can you dispel a magic effect you can't perceive? Parameter name: items] System.Web.Mvc.MultiSelectList..ctor(IEnumerable items, String dataValueField, String dataTextField, IEnumerable selectedValues) +289714 System.Web.Mvc.SelectList..ctor(IEnumerable items, String dataValueField, String dataTextField) +19 ASP._Page_Views_User_Create_cshtml.Execute() in d:\hosting\11178048\html\fbpm\fbpm\Views\User\Create.cshtml:67 System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +197 System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +81 System.Web.WebPages.StartPage.RunPage() +17 The Controller code: C# TBB updating metadata value Is there a way to block an elected President from entering office?

Those values are not carried through to the POST action (when the form is submitted) since they are not bound to a form element. –Tieson T.