Microsoft Edge 44.18362.449.0
Teleri Version: Version=2017.3.913.45,
When a item is selected and a postback is occured, the SelectedValue returns an empty string.
The correct SelectedValue should be return.
Thing that have been tried so far:
1: upgrade the telerik to the latest version (2020.114) ---> issue persists
2: set autopostback to "true" problem solved
3: use other browsers (chrome, FireFox, new Version 79.0.309.68 ) issue disappears
2: code behind
<telerik:RadComboBox runat="server" ID="CB" AllowCustomText="true" HighlightTemplatedItems="true" EnableViewState="false" CheckBoxes="true" EnableLoadOnDemand="true" OnItemsRequested="CB_ItemsRequested" ></telerik:RadComboBox>Specifically, note that CheckBoxes is true.
In combo box once a value is selected there is no option to clear the selection. We can have an additional button outside the combo box to achieve the same.
This will require some additional coding.
Since this is a regular scenario why can't there be a property within the RadCombo Box that makes clear selection button visible next to the combo box drop-down button and does the task of clearing the selection?
This error comes up often for this control and workarounds have been discussed and posted. See below http://www.telerik.com/forums/radcombobox-error-selection-out-of-range-parameter-name-value http://www.telerik.com/forums/selection-out-of-range-excpetion http://www.telerik.com/forums/selection-out-of-range-parameter-name-error-need-to-be-able-to-set-values-that-don-t-exist-in-the-combobox http://www.telerik.com/forums/selection-out-of-range-parameter-name-value http://www.telerik.com/forums/selection-out-of-range-parameter-name-value-radcombobox-in-radgrid http://www.telerik.com/forums/radcombobox-selection-out-of-range-error The feature request is the following: 1. Add an Attribute to the RadComboBox, RadDropdownList (and any other controls that suffer from this issue). 2. Let's call the Attribute -- AppendIfSelectedValueMissing. 3. This attribute would be a boolean (True / False). Default is FALSE. 4. If AppendIfSelectedValueMissing=True then when the value of record is being Databound to a RadComboBox, RadDropDownList, etc. A check (or Try/Catch) would occur to ensure that the Value exists in the DataSourceList and if it does NOT exist in the list then the SelectedValue would be Appended to the List. Thus, eliminating the "Selection out of range, Parameter, Value" error. This occur often because some lists get changed over time; however, the historical data may have a value that is no longer on the list -- thus triggering the error. For example, let's say we ask for a user's Favorite Color. Our original list was: Red, Green, Blue but for some reason -- management, changing user requirements, etc. the new list is Red, Orange, Blue Now, if we DataBind a RadComboBox to a historical record with Green as value, we get the "Selection Out of Range" errror. What I am proposing is -- if we set the AppendIfSelectedValueMissing = True then databinding to a historical record with Green would have the following occur. List from DB --- Red, Orange, Blue SelectedValue -- Green AppendIfSelectedValueMissing New List for Ctrl -- Red, Orange, Blue, Green Thus, the error goes away, the historical data can stay the way it is and the lists can adjust their choices over time. All good for everyone!!! Thanks for your consideration.
"Loading..." text in Combobox with Virtual Scrolling is visible on first set of items loading. It shows first time "Loading..." text. on scrolling it loads items from PageMethods/WebService but "Loading..." text it not visible i.e. because it is first <LI> item so it is not visible. Instead of first <LI> item, it should be at position where it always display while loading more items. same issue is also in telerik demo website : http://demos.telerik.com/aspnet-ajax/combobox/examples/populatingwithdata/autocompletesql/defaultcs.aspx
When combo popups to the top of the page it goes out of the browser viewport. Reproduce: A RadComboBox on the bottom of your page and the page height is larger than the viewport. When you scroll down the page to the RadComboBox and open it the itembox (100+ items) height will be higher than the view port. See attachment 'RadComboBox.png' Also the auto shrink doesn’t work in this situation see attachment RadComboBox2.png
Hi, RadComboBox does not having direct way to set its height, not dropdown height. It is required functionality because its height should be as per website design.
Based on customer feedback: In certain cases, the client side autowidth does not perform well enough or the results are not exactly what one would expect. Instead, server side autowidth could do the job. True, there are drawbacks to this approach, like font name and font size, but it could be configurable.