telerik dropdownlist default value

E.g. . Telerik and Kendo UI are part of Progress product portfolio. Just for the record, setting "NullText" on a DropDownList in which you bind a dataset/table to does not work. }) function onChange (e) {. Components /. Progress, Telerik, Ipswitch, Chef, Kemp, Flowmon and certain product names used herein are trademarks or registered trademarks of Progress Software Corporation and/or one of its subsidiaries or affiliates in the U.S. and/or other countries. After the parent dropdown has changed, in its event handler I reload the dependent data source and set a new valid value. I am not exactly sure what is the problem with strongly-typed extension, but you can check here. Progress is the leading provider of application development and digital experience technologies. DataSourceID property - set to the ID of your data source. Could you please help me to implement this concept. Copyright 2022 Progress Software Corporation and/or its subsidiaries or affiliates. To check Waldo in the drop down list : ddlGivenAnswer.FindItemByValue ( DataBinder.Eval (e.Item.DataItem, "givenAnswer").ToString () ).Selected = true; default Configurator Configuration Set data-value-primitive Enable Visible Information Kendo UI DropDownList supports the enabled , events , source , value and visible bindings. All Telerik .NET tools and Kendo UI JavaScript components in one package. The demo shows a sample scenario for using the Telerik DropDownList for ASP.NET Core where you can bind the component to a list of values and make a selection from the available options. RadListControl can not transition directly from bound to unbound mode. If you comment these two lines I hope you will experience the issue. I hope this helps. The following properties and methods are used when binding RadDropDownList to a data source: DataSource property - set to an instance of your data source. See Trademarks for appropriate markings. Copyright 2022 Progress Software Corporation and/or its subsidiaries or affiliates. Try now. All Rights Reserved. Hey as long as the option is in the list I could care less where it comes from or what it is. In next round when dependent dropdown holds the default value, after reloading datasource it works as expected. All Telerik .NET tools and Kendo UI JavaScript components in one package. I did see a reference to this earlier in the topic so I tried it.it didn't work. }) All Telerik .NET tools and Kendo UI JavaScript components in one package. Can you show me an examplewhere you are bindinga dataset/datatable to the dropdownlist and also have a default "Please make a selection" item in the list (without adding it to the underlying dataset somehow)? Please remove the hardcoded width and make default width 100% as in the other components.---ADMIN EDIT. }. It's like changing the value of a vote without changing the vote him self or the name on the vote. Progress, Telerik, Ipswitch, Chef, Kemp, Flowmon and certain product names used herein are trademarks or registered trademarks of Progress Software Corporation and/or one of its subsidiaries or affiliates in the U.S. and/or other countries. New to Kendo UI for jQuery? 'Chai' data-value-primitive is not set. In the feedback I mentioned in my bugreport it gave me a workaround: set a descendant dropdown value to default(TValue) (0 in this case), delay for a short while until dropdown re-renders. ) NOT having a default "Select Option" is against best practice and UI designin my opinion - how you get it there is up to you and yes some of the ways you may choose to do this may not be the best. Progress, Telerik, and certain product names used herein are trademarks or registered trademarks of Progress Software Corporation and/or one of its subsidiaries or affiliates in the U.S. and/or other countries. It no longer is. Handling values that are out of the range of the available data is something that the application must handle, and the DefaultText could mask that to an extent, but it is still something that the app must take care of (more here). The default browser behavior of Chrome and Edge is to return the selection in pixels. I'll take a look at your example though and give it another shot. Supported file types: PNG, JPG, JPEG, ZIP, RAR, TXT. Just add a default value in your dropdown like --Select-- Now make the AppendDataBoundItems property of Dropdown to "True" Thats it. Wednesday, February 25, 2009 12:25 AM 0 Sign in to vote User401360897 posted You need After Data Bound Event, Use Insert Method. Demo page for the DropDownList HtmlHelper read.Action("GetDealersBoothsForDropDown", "DealerAccounting"); What you want is to check the rigth item. Note the single blank space. E.g. once the user selects a value, they are not allowed to select 'null' again. The current demo of the UI for ASP.NET Core DropDownList demonstrates an implementation of the most common scenarios in which the component is used. Q312 of RadControls for WinForms is available for. Telerik and Kendo UI are part of Progress product portfolio. }) Indeed, the ValueChanged event should not fire like that and we've reviewed this case too - the issue (and solution) are the same as here: https://feedback.telerik.com/blazor/1471160-selection-should-not-reset-value-on-data-change. Care to elaborate on that since it is easily done with the ASP.NET Ajax controls and is contained in virtually every drop down list you find anywhere (winforms and web). .Name("DealerBoothDropDown") With the MVVM patter used by the framework, you do not need methods like Clear () to remove selection - when the Value matches the default value for its type, the Telerik component will show the placeholder automatically (if one is set). DropdownList sets the value to default after the bound data has been updated I have two cascaded dropdownlists, in attached example car brands and selectable colors. Dont go for server side code unless you have a client side simple code. If the widget is not bound (e.g. #1 PassiveAggressive- look it up dude. So not sure what people are saying about the "NullText" property but it seems to be useless if you are actuallybinding anydata to the control. The dependent dropdown has defaulttext option. Data.ColorId = GetDefaultColor(brandId); See blog below. By default, if no Value is provided and no DefaultText is defined, the DropDownList will appear empty. Default Item By Default, the KendoReact DropDownList will render an empty area if no value has been displayed. This is a migrated thread and some comments may be shown as answers. Product Bundles. I updated the title to be more generic - it should be about removing the inline width rule, and whether there will be a default value and what units it will use will be up to a more detailed research.--- The DropDownList on the other hand resembles a <select> tag in HTML and <select . Do you want to have your say when we set our development plans? i challenge telerik to justify their "it's not a bug because people rely on this behaviour" claim by describing just one plausible scenario where: 1) there's a non-primitive value & source type with an id and a label property 2) there's a data-bind value binding 3) there's a value field and text field defined 4) the desired behaviour would be to You can change the underlying data source for your control by using an SQL union query. Setting the DefaultText = "" (empty string) doesn't change the selection. Do you want to know when a feature you care about is added or when a bug fixed? When the page loads, I would like to execute some JS that sets a default value in the Dropdown. The ONLY reason you have to mess with the underlying data in winforms is because you are not able to add the item programatically AND bind the list (in a smart way). Telerik and Kendo UI are part of Progress product portfolio. This doesn't break anything for anyone else. All Telerik .NET tools and Kendo UI JavaScript components in one package. Download free 30-day trial. To display a selected item when the component renders - provide the Value of the desired element. Thanks! Now enhanced with: The MVC wrapper for Kendo DropDownList widget, renders input element with the selected value. And parent changes again, if the updated datasource does not contain the previous dependent value the dropdownlist sets its value to default. My question is how to set the default value of a DropDownList? Please refer to the attached project and to the attached movie. alert (e.sender.value ()); API. All Rights Reserved. Download free 30-day trial. Progress, Telerik, Ipswitch, Chef, Kemp, Flowmon and certain product names used herein are trademarks or registered trademarks of Progress Software Corporation and/or one of its subsidiaries or affiliates in the U.S. and/or other countries. It would be perfect if I change the datasource of the second dropdown and set a value from the fresh dataset, the dropdown should not call the eventchanged callback with 0 or null value but shows the appropriate value (and its text) I have set. http://demos.telerik.com/aspnet-mvc/dropdownlist/remotedatasource, Try our brand new, jQuery-free Angular 2 components. If so, please click the Follow button on the original request for that: https://feedback.telerik.com/blazor/1471160-selection-should-not-reset-value-on-data-change. { Lol, yes this is the point I have been trying to make since my original post on here. You can find the original item here: (Total attached files size should be smaller than, Progress Telerik UI for Blazor Feedback Portal, Selection should not reset value on data change, https://feedback.telerik.com/blazor/1471160-selection-should-not-reset-value-on-data-change. Max total file size - 20MB. But when you change the brand to another item, it loads the available colors, set value to brand's default color (in example McLaren default color is Yellow, Id:4). Progress is the leading provider of application development and digital experience technologies. If you can, it is a poorly designed app. All Rights Reserved. Is the behavior described in the first paragraph what you are looking for? async Task OnBrandChanged(int brandId) In order to achieve your goal you can either set the AutoBind(true), which is the default value, or set the text and value of the widget. Once again, not talking about how it is implemented I'm just talking about simply having a default item which is what the original response seemed to be saying was a bad idea. The DropDownList displays a list of values and allows for a single selection from the list. The example below demonstrates how to achieve that. The value will not be set if there is no item with such value. DropDownList does not select the first Value in its data source Before, the Value from the first item in the Data was populated through @bind-Value to the view model. e.Select("onSelect"); This is mandatory when binding RadDropDownList declaratively. Copyright 2022 Progress Software Corporation and/or its subsidiaries or affiliates. Solution. DropDownList /. I want the DropDownList to show the default text only when no option is selected. Please try to keep your comments close to the main topic of the thread, and if you have comments concerning a specific answer of somebody else, as I mentioned above, keep close to the business tone of language and express your feedback in a constructive way. The user input is restricted within the predefined options. .OptionLabel("Select Dealer and Booth") Max total file size - 20MB. In order to achieve your goal you can either set the AutoBind (true), which is the default value, or set the text and value of the widget. The reason we do not provide placeholder for the DropDownList is that according to UI concepts a placeholder should exist on inputs only. it sets thecurrent position to 0 and this is a desired behavior. Then, use the DataSource API to get the desired item (the one that should be selected by default) and use the value method to select it. In this demo you can see the Tag Helper example and specified data text and value fields, virtualization, templates and filtering with specified minimum length option. Take a look at this ASP.NET MVC DropDownList example to find out how events are triggered in the drop down listcontrol. In the example at a first run everything's fine. If the widget is not bound then you will not be able to see the selected text. API. FilteredColorList = GetFilteredColorList(brandId); Vote for the 7 Telerik products at the 2011 Great Indian Developer Awards. In the Select event the DropDownList has not yet changed the value from the previous to the new one, that is why the Change event should be used to get the new value: . I'm looking for this behaviour. I saw that it displays some value in a element that I don't know how to change. Default Message property of the RadDropDownList enables the ability to set control's text if no item is selected. i am binding the kendo gridview using model value. Progress is the leading provider of application development and digital experience technologies. value, the dropdownlist calls the valuechanged callback with default value. I am testing with the current latest (2.21.1 at the time of writing) which has the fix for the other issue you linked as well. Support & Learning Resources Hello Team, I have Created Kendo Gridview with Dropdownlist inside it is not displaying the selected value while binding the gridview. The original response from Telerik was unclear and basically told the guy that it is stupid to put a default option in the list - he didn't specify that it was only the way he was doing it thatwas incorrect. Marin Bratanov Are you really thanking me? If value is undefined, text of the data item is used. This item is a duplicate of an already existing item. I will begin with what I perceive as the outstanding issue - the ValueChanged handler firing with the default value - what would you expect that the dropdown would do when its Data collection does not hold an item that matches the Value? The article shows how to change this and display point value in the real font sizes dropdown header - RadEditor for ASP.NET AJAX Find other useful information in the Knowledgebase section of the ASP.NET AJAX documentation. This approach applies to all inputs Here are a few examples in their corresponding tabs per component: The dependent dropdown has defaulttext option. The Default Message property could be very useful, when one needs to provide more information about the content of the RadDropDownList. I have two cascaded dropdownlists, in attached example car brands and selectable colors. Now enhanced with: New to Telerik UI for Blazor? autoBind is set to false ), the value method will pre-fetch the data before continuing with the value setting. That is a ridiculous statement in my humble opinion since having a Default (NOT Null) value only enhances usability and actually makes the control able to be validated (otherwise the user can just leave the first item selected and you can't validate that they actually made a selection vs. forgetting and leaving the 1st item selected). New to Telerik UI for ASP.NET MVC? You can modify the default text to be shown only before an item is selected by toggling the DefaultText parameter value depending on your business logic. But after this the descendant dropdown calls eventchanged callback with 0 (default) value and dropdown shows the text passed in defaulttext parameter. Please try to stay close to the main topic of the thread using business tone of language only. You have to bear in the mind that you can see Null text only in case that the control is not in focus (this is a desired behavior). DropDownList Methods value value Gets or sets the value of the DropDownList. Why don't you show me an application anywhere in which a user is required to select a value from a drop-down list that does NOT have a default option. Progress, Telerik, Ipswitch, Chef, Kemp, Flowmon and certain product names used herein are trademarks or registered trademarks of Progress Software Corporation and/or one of its subsidiaries or affiliates in the U.S. and/or other countries. All Rights Reserved. Progress is the leading provider of application development and digital experience technologies. 2. myDdlData will have item for Unknown, First, Second and Third. I have Created Kendo Gridview with Dropdownlist inside it is not displaying the selected value while binding the gridview. Copyright 2022 Progress Software Corporation and/or its subsidiaries or affiliates. All I am saying is that it is NOT bad design to have a default option and that it IS bad design to NOT have a default option. Default Theme Main; Main Dark; Nordic; Ocean Blue; Purple; Turquoise; . Choose a product e.g. Copyright 2022 Progress Software Corporation and/or its subsidiaries or affiliates. .DataSource(source => See Trademarks for appropriate markings. Is there any way to avoid this behaviour of the dropdownlist? After the parent dropdown has changed, in its event handler I reload the dependent data source and set a new valid value. The fact is, a dropdown list is a dropdown list no matter where it is, winforms, web etc. Download free 30-day trial. Ummmyes I am well aware of the many differences between windows forms and web, but thanks! Regards, DropDownList Documentation Overview; DropDownList Forums; Knowledge Base This is a migrated thread and some comments may be shown as answers. This is mandatory when binding RadDropDownList at runtime. Am I missing something? .AutoBind(false) { in model values is available but it is not displaying the selected value and once after changing the dropdown value it is reflecting ID Value in another label where i bind IDtext. .Events(e => { In other words if the autoBind option is set to false, then the widget will not be bound and thus will not show the selected text. in model values is available but it is not displaying the selected value and once after changing the dropdown value it is reflecting ID Value in another label where i bind IDtext. Set the TextField and ValueField parameters to point to the corresponding property names of the model. Hmm well that is what the DropDownStyle is set to and the NullText works greatuntil you bind any data to the list. Okay, manually setting the selectedindex to -1 seems to do the trick so that definitely fills the need. See Trademarks for appropriate markings. Due to the remote binding, the dataBound event is the appropriate event to use in your case. Set the Value property to the intial value of the component (optional). source.Read(read => So if you are telling me that you can bind a dataset to the RadDropDownList AND have the NullText property work (by displaying what is in the NullText property as the selected item when the form initially loads) then I would have to disagree - or at least say that it sure does not work that way in my app. Now enhanced with: @(Html.Kendo().DropDownListFor(m => m) Description The UI for ASP.NET Core DropDownList comes with two options for implementation - HTML and Tag Helpers. In the following snippet, I expect to see "1" in the initial load of the page, but I see "0" - the default value for the integer. Excellent, thank you! To display DefaultText - Value should be 0 or null depending on the data type you are using in the ValueField and the DefaultText should be defined. If the data source does not contain the previous (!) Explore the. It provides flexible data binding, virtualization, cascading lists, appearance customization through templates, events, validation, accessibility, RTL support and keyboard navigation. Check it out athttps://learn.telerik.com/. The component simply cannot know what it should do in this case, whatever it does is wrong in some cases, which is why we must leave it to the app. Max total file size - 20MB. The text you enter is not an option in the list (Please select an option)and the first item in the dataset is the first item in the list, which brings us back to having to add a record to the dataset at some point in order to accomplish this functionality that should be intrinsic. So I am obviously not aware of this "Null Text" but I will look into it because adding a value to a datasource IS dumb, but seemed to be theeasiestway. All Telerik .NET tools and Kendo UI JavaScript components in one package. CONSOLE LOG Clear log Support & Learning Resources DropDownList Documentation Overview DropDownList Forums The Telerik UI DropDownList TagHelper and HtmlHelper for ASP.NET Core are server-side wrappers for the Kendo UI DropDownList widget. DropdownList sets the value to default after the bound data has been updated. Direct offensive language as well as sarcasm and irony are not tolerated. Thanks! Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! .DataValueField("BoothDetailRowId") Well then your method that returns the datasource should have a parameter called "IncludeDefaultOption" or something like that, or you could have seperate methods entirely or you can add it AFTER the method returns the actual data. Learn more about DropDownList for ASP.NET AJAX and get a free trial today. You can modify the default text to be shown only before an item is selected by toggling the DefaultText parameter value depending on your business logic.

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