It may have broken on an upgrade? In the example below The variable ViewData["DATA_ACREDITO_MODELO_INTEGRADO"] has a SelectListItem list with a default selected value but such attribute is not reflected visually. When a value is not specified (i.e. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. The reason I need to use the first option is so that I can add the class attribute to the control. Asking for help, clarification, or responding to other answers. Hi guys, This is a known issue, which is already fixed. Problem is in your ViewBag property name. Thanks for contributing an answer to Stack Overflow! Solution 2 When a value is not specified (i.e. It does not seem to be the case, because you set NewsItemId as the selected value while your collection is based on NewsItemId.Items which may not be of the same type. rev2022.11.7.43014. It is determined based on some condition (say language . The select tag in HTML is used to create a dropdown list of options that can be selected. Not the answer you're looking for? Why do all e4-c5 variations only have a single name (Sicilian Defence)? How do planetarium apps and software calculate positions? If he wanted control of the company, why didn't Elon Musk buy 51% of Twitter shares instead of 100%? Your construct can work if you filter the selected item from the ViewBag and add it to the SelectList constructor overload. Get all Elements by data attribute using JS #. How actually can you perform the trick with the "illusion of the party distracting the dragon" like they did it in Vox Machina (animated series)? Renamed my model property to something else and it worked. It's not clear why you convert a List
to a SelectList. The content you requested has been removed. In one of my pages, SignUpDetail.aspx, I've added a DropDownList control called 'ddlCounty', which is using a connection string called 'MyPeopleConnectionString1' to connect to a SQL 2005 Database table called 'dbo.Countries'. Solution 1. Replace first 7 lines of one file with content of another file. A potentially dangerous Request.Form value was detected from the client. Could you provide more details as to how this fixes the problem? 1. JavaScript. or why you specified
Change name of the Title property to any other and everything should work. It may conflicts with the name of the dropdownlist. (Sorry about finnish in the text values and variable names, but those shouldn't matter :D), and it works. The list loads successfully but the Selected Value is Not selected. I have an issue where the selected value is not working for the Html.DropDownList helper method. Why bad motor mounts cause the car to shake and vibrate at idle but not when you give it gas and increase the rpms? Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. This property returns a string representing the value attribute of the <option> element in the list. What is the best way to give a C# auto-property an initial value? Try to run the following code to find an element based on a data-attribute value , We make use of First and third party cookies to improve our user experience. (clarification of a documentary). Open the StartMusicStore.sln file with Visual Web Developer 2010 Express ("Visual Web Developer" or "VWD" for short) or Visual Studio 2010. Is a potential juror protected for what they say during jury selection? Concealing One's Identity from the Public When Purchasing a Home. "Id"), DropDownListFor sometimes does not behave properly. {
A ViewModel class allows you to strongly name things without casting, like this: It's a subtle looking change but everything is compile time checked. -knockoutJS Find centralized, trusted content and collaborate around the technologies you use most. In order to make a selected value work, it must be of the same type as the elements of your collections. How to get value of data attribute and use it in jQuery. Should I avoid attending certain conferences? You are adding the form-control class in the wrong parameter. The second parameter is the Model class for populating the DropDownList i.e. Do we ever see a hobbit use their natural ability to disappear? $ ( <selector> ).get (0) and use the native Javascript property .selectedIndex. Check whether the correct SelectListItem has its Selected property set to true. The option tag contains the value that would be used when selected. here is the codes; but the first item "Honda" is not selected in default., the . Stack Overflow for Teams is moving to its own domain! I have a dropdown where the default value is given by a LookUp. Stack Overflow for Teams is moving to its own domain! But again why when you already have the List. How to Fix this problem? You can overcome this limitation setting the attribute manually: @ (Html.Kendo ().DropDownListFor (m => m.CustomerID) .BindTo (Model.Customers . rev2022.11.7.43014. new SelectListItem { Text="Camery" ,Value="2" },
To subscribe to this RSS feed, copy and paste this URL into your RSS reader. // in my view <%=Html.DropDownList ("UserId", (SelectList)ViewData ["UserId"])%>. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. Is this a bug with .NET 4.5? If no option is selected then nothing will be returned. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. See below: However when I try the below in by view it works: The below also works but since the field name does not match the model, it will not post correctly. Following program runs, but DropDownList always initializes to first entry (and hence onchange does not work properly). By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. I'm having the same problem even though I changed the viewbag names. In the next version the rendered input element will have a value attribute. What is this political cartoon by Bob Moran titled "Amnesty" about? Will Nondetection prevent an Alarm spell from triggering? and now It works fine. Does baro altitude from ADSB represent height above ground level or height above mean sea level? Update The item in SelectedValue exists within the list, but the first item in the list is always defaulted to selected. You should change the very name of the field of your DropDownList: change viewbag property name to other then model variable name used on page. Solution 3. How to control Windows 10 via Linux terminal? If item.NewsItemId is of type T, ViewBag.NewsItemId.Items must be of type IEnumerable (or any other collection type implementing it). I have spent 30 minutes wondering why my Title dropdown wasn't being Selected. Why are all solutions like this. The list loads successfully but the Selected Value is Not selected. :(- Method 1: Using the value property: The value of the selected element can be found by using the value property on the selected element that defines the list. The first parameter is the Name of the DropDownList, the same will also be used to fetch the selected value of the DropDownList inside Controller when the Form is submitted. Why am I getting some extra, weird characters when making a file from grep output? Does English have an equivalent to the Aramaic idiom "ashes on my head"? This default value is not same as the first entry from the DropDownList. As far as I can tell from this and your previous posts, you fabricate constructs rather than following openly published patterns or documentation. I saw one place working and another not working using the syntax, When I researched this, I determined the ViewBag.NewsItemId was actually a null in the view. Consequences resulting from Yitang Zhang's latest claimed results on Landau-Siegel zeros. Is there an industry-specific reason that many characters in martial arts anime announce the name of their attacks? Find centralized, trusted content and collaborate around the technologies you use most. its source of data. Select the Select Movie Category (Simple) link. Not the answer you're looking for? @Html.DropDownList help class, "Selected = true" does not work, why. c# asp.net-mvc asp.net-mvc-5 html.dropdownlistfor What does your debugger tell you? If I add the option label. you really should start reading the docs, it helps. Is it enough to verify the hash to ensure file is virus free? HTML.DropDownList Default Value save as NULL and still work on selected values. Best regards Christian Lyck. Connect and share knowledge within a single location that is structured and easy to search. ViewBag.Product = new List
The culprit was ViewBag.Title matching my model.Title. Not the answer you're looking for? Because it is same as your property in Model it will not work. Use the debugger to inspect the newly created SelectList. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Why is there a fake knife on the rack at the end of Knives Out (2019)? Why do all e4-c5 variations only have a single name (Sicilian Defence)? To learn more, see our tips on writing great answers. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. But if I wrote :@Html.DropDownList("MODULE_ID", String.Empty) .It displays the selected value. How to help a student who has internalized mistakes? UPDATE: KendoDropDownList.zip. QGIS - approach for automatically rotating layout window. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Can an adult sue someone who violated them as a child? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Yes the value in Title matches with the ones in the list. Set the index of the option (not the value) ! Peter, the overloads are openly published in the reference documentation for the SelectList and@Html.DropDownList. That means, it comes to the Page Load again on selection of any Option and calls the BindDropDownList (). here is the codes; but the first item "Honda"is not selected in default., the dropdownlist shows blank, @Html.DropDownList("Type", new SelectList(@ViewBag.Product, "Value", "Text"), "") | . Why should you not leave the inputs of unused gates floating with 74LS series logic? The culprit was ViewBag.Title matching my model.Title. I have changed the ViewBag name from ViewBag.MODULE_ID to ViewBag.ModuleList. Hit return on the page address field in the browser and the visible selection is reset to match the option with the selected attribute. I had the same problem. Could someone help me understand what I am doing wrong? It displays the label "--Select--" not the selected value. Sci-Fi Book With Cover Of A Person Driving A Ship Saying "Look Ma, No Hands!". Solution 1: When you use the DropDownListFor () (or DropDownList () ) method to bind to a model property, its the value of the property that sets the selected option. Why was video, audio and picture compression the poorest when storage space was the costliest? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Unix to verify file has no content and empty lines, BASH: can grep on command line, but not in script, Safari on iPad occasionally doesn't recognize ASP.NET postback links, anchor tag not working in safari (ios) for iPhone/iPod Touch/iPad, Adding members to local groups by SID in multiple languages, How to set the javamail path and classpath in windows-64bit "Home Premium", How to show BottomNavigation CoordinatorLayout in Android, undo git pull of wrong branch onto master, Result of LINQ Query in MVC SelectList as Value and Text - not working, Check if username exist in Microsoft Azure Active Directory, Visual Studio MVC 5 shows errors but compiles and runs okay, Setting default value to Html.DropDownListFor, MVC 5 - The type arguments for method "" cannot be inferred from the usage. Try this: -MVC .net Developer Were sorry. What exactly isn't working? Sci-Fi Book With Cover Of A Person Driving A Ship Saying "Look Ma, No Hands!". Can plants use Light from Aurora Borealis to Photosynthesize? The DropDownList is generated using the Html.DropDownList Html Helper method. Change name of the Title property to any other and everything should work. You should just change name of your ViewBag prop to something else, like: ViewBag.NewsItemList = new SelectList (ViewBag.NewsItemId.Items, "Id", "Name", item.NewsItemId); and on View 503), Mobile app infrastructure being decommissioned, ASP.NET MVC Html.DropDownList SelectedValue, HTML.DropDownList does not respect pre-selected value, Html.Dropdownlist selected value not working, @Html.DropDownList set selected value dynamic MVC 4 Razor, The ViewData item that has the key 'XXX' is of type 'System.Int32' but must be of type 'IEnumerable', WebApplication.Models.Category instead of value. Find centralized, trusted content and collaborate around the technologies you use most. @Ruchan, Is it any chance you're setting the title of the page using, I thought the same and changed the model property name and tried, but still the same. @Html.DropDownList ("Title", ViewBag.TitleList as SelectList, "Select") The list loads successfully but the Selected Value is Not selected . Change name of the Title property to any other and everything should work. Set value of the Title property in the controller: Another possible reason (and the correct one, based on the comments below) is that ViewData["Title"] is overridden by another value. Ctrl-r, selected option tag is not shown as selected but your last gui selection is. -KendoUI, then I tried converting the array to SelectListItem ( to no avail). I have changed the ViewBag name from ViewBag.MODULE_ID to ViewBag.ModuleList. How to Fix this problem? Is it possible for a gas fired boiler to consume more energy when heating intermitently versus having heating at all times? Asking for help, clarification, or responding to other answers. It's only when I reset my form that the LookUp does its work and puts the value that I searched for in the dropdown as default. Html.DropDownList Selected Value Not Working (Using Constructor with IEnumerable), Stop requiring only one assertion per unit test: Multiple assertions are fine, Going from engineer to entrepreneur takes more than just good code (Ep. Why are there contradicting price diagrams for the same ETF? Try this: Thanks for contributing an answer to Stack Overflow! [Possible duplicate][1] [1]: Thank you for your update. Youll be auto redirected in 1 second. When the Littlewood-Richardson rule gives only irreducibles? also change in controller. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. How to print the current filename with a function defined in another file? simple and straightforward and no fluff. Because it is same as your property in Model it will not work. It may conflicts with the name of the dropdownlist. Set value of the Title property in the controller: Another possible reason (and the correct one, based on the comments below) is that ViewData["Title"] is overridden by another value. Set select option 'selected', by value. To learn more, see our tips on writing great answers. Thanks a lot for your quick response, much appreciated, yes, your this code works well: @Html.DropDownList("Type", @ViewBag.Product as List). A good reason not to use ViewBags and View Dictionaries. When a value is not specified (i.e. What's the best way to roleplay a Beholder shooting with its many rays at a Major Image illusion? Asking for help, clarification, or responding to other answers. First off, if you are pre-selecting values at SelectedIndexChanged event of DropDownList, then you need to set AutoPostback to TRUE to trigger the SelectedIndexChanged event. You have the same problem here: DropDownListFor Not Selecting Value. }; Anybody knows what is wrong with my implementation, any idea? Update The culprit was ViewBag.Title matching my model.Title. new SelectListItem { Text= "Honda", Value="1", Selected=true }, //this Selected = true does not work at all. If he wanted control of the company, why didn't Elon Musk buy 51% of Twitter shares instead of 100%? Try specifying the type arguments explicitly, Create Submit Button for Table in Razor & MVC, Using Html.DropDownList helper with a ViewBag list, 'int' does not contain a definition for 'ToList', MVC DropDownList selected value not working. currently it is being added as the option label. result: the SelectedValue property is set on the object. How can you prove that a certain file was downloaded from a certain website? First of all, how do you populate ViewBag.NewsItemId.Items ? QGIS - approach for automatically rotating layout window, Run a shell script in a console session without saving it to file, Return Variable Number Of Attributes From XML As Comma Separated Values. In my mvc razor view, I have a @Html.DropDownList as below, all I wanted is when the razor is loaded, the first item "Honda" is selected in default, so user will not need to click to select it again, and I don't want to add "Please select a product", that
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