html.dropdownlistfor

问题 I am not sure if this is a bug with the DropDownListFor extension or what, but we had the following: http://mydomain.com/path/page?myparam=myvalue In my View Model I have the following: public string MyParam { get; set; } public List<SelectListItem> ParamOptions { get; set; } When I do the following in my View it fails to select the correct value: @Html.DropDownListFor(x => x.MyParam, Model.ParamOptions, "Select Value") However, when I change the parameter 'MyParam' in my view model to

问题 How to get dropdownList selected Item from CSHTML page. <div class="editor-field"> @Html.DropDownList("ROUTE_GROUP_ID", String.Empty) @Html.ValidationMessageFor(model => model.ROUTE_GROUP_ID) </div> 回答1: If you want its value in jquery you can do like this $('#ROUTE_GROUP_ID').val(); or if you want its value in controller you can access it from Request.Form["ROUTE_GROUP_ID"] or if your controller have a formcollection object then access the value like formcollectionobj["ROUTE_GROUP_ID"] 回答2:

问题 I have a service layer that exposes a method, which returns me a List, called GetStates. public List<StateObject> GetStates() My State Object is just a custom object I have created: public class StateObject { public int stateId { get; set; } public string description { get; set; } public Boolean isDefault { get; set; } } In my models, I am trying to create a model that will be used for my display and modification screen of a task. One thing this will be used for is handling the display and

问题 I have this code the constructs a select list as a boolean response var responseList = new List<SelectListItem>(); responseList.Add(new SelectListItem { Text = "Going", Value = bool.TrueString}); responseList.Add(new SelectListItem { Text = "Not Going", Value = bool.FalseString }); ViewData[ViewDataKeys.ResponseTo] = vatOptionList; In my view I use the dropdownlist helper below. @Html.DropDownListFor(m => m.ResponseTo, (IEnumerable<SelectListItem>)ViewData[ViewDataKeys.ResponseTo], "--Select-

问题 Is it possible to assign my own class to the HTML.DropDownListFor() helper? 回答1: One of the overloaded method has an object htmlAttributes as last parameter in which you can specify extra attributes to be added to the generated html: Html.DropDownListFor(..., new { "class" = "myclassname" }; http://msdn.microsoft.com/library/ee703670.aspx 回答2: Didier's answer is mostly correct, but to define a class value in htmlAttributes object, you need to use this syntax: Html.DropDownListFor(..., new {

问题 controller get action IList<InputVoltage> inputVoltagesList = unitOfWorkPds.InputVoltageRepository.GetAll.ToList(); pdsEditViewModel.InputVoltageList = inputVoltagesList.Select(m => new SelectListItem { Text = m.Name, Value = m.Id.ToString() }); ViewModel public IEnumerable<SelectListItem> InputVoltageList { get; set; } public List<int> SelectedInputVoltages { get; set; } View @Html.ListBoxFor(m => m.SelectedInputVoltages, Model.InputVoltageList) I want to receive a null list when a user

问题 I want to add row to my table dynamicly like this : var tableRef = document.getElementById('tblData').getElementsByTagName('tbody')[0]; var newRow = tableRef.insertRow(tableRef.rows.length); var newCell = newRow.insertCell(0); newCell.appendChild(document.createElement('input')); var newCell = newRow.insertCell(1); newCell.appendChild('@Html.DropDownList("AppVersionGroupId", string.Empty)'); but output is : newCell.appendChild('<select id="AppVersionGroupId" name="AppVersionGroupId"><option

问题 This question already has answers here : better way to load 2 dropdown in mvc (5 answers) Closed 2 years ago . I know I can make a dropdown with a list of SelectedListItem> and @Html.DropDownList("someID") and os on.. My question is , what if you had 2 dropdowns, and the second dropdown depended on the selected item from the first dropdown? How do you populate it? With JS? How would you go about it? Would you change the populate with another list, change the whole dropdown or maybe have a

问题 In my razor view, I use a drop down list. I want to have this control disabled (not selectable). My code is: <div class="field-list">@Html.DropDownListFor(model => model.LinguaCodiceMadre, Model.LinguaMadreList, new{ @disabled = "disabled" })</div> But it doesn't work, my control is always enabled. Html page code is: <select name="LinguaCodiceMadre" id="LinguaCodiceMadre" data-val-length-max="10" data-val-length="The field LinguaCodiceMadre must be a string with a maximum length of 10." data

问题 I'm new to MVC3 and have been working on a small site using EF and 'Code First'. I'm trying to do a few things in a view dealing with a drop down list and am wondering what the best way to go about them is. I want a user to be able to select a rule from the dropdownlist, and depending upon which rule was selected, I would like a label on the page to show the rule name (without posting). I also need to be able to send the selected rule onto the next page. I haven't added all of the necessary