Browser:

Microsoft Edge 44.18362.449.0

Telerik Control:

RadCombobox

Teleri Version:  Version=2017.3.913.45,

Issue:

When a item is selected and a postback is occured, the SelectedValue returns an empty string.

Expected behavior:

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

Sample code: 

1: aspx

2: code behind

FYI: this is basically an edit of a previous post.  Original didn't allow edits.

Please add a Server Side event for OnBlur or OnClose for the RadComboBox with the option for an auto postback.

The Telerik support team suggested using the "TextChanged" event.

However, this does not work for my purpose and here is why:

Mainly because it appears that an event fires immediately after each check/uncheck.

I have been using a dropdowncheckbox control by another vendor in multiple projects over the past 3 years (many, many instances).  It fires an event when you click anywhere out side the dropdown or when you collapse the dropdown (close).  This is perfect because many of these dropdowns supply parameters to SSRS reports that are generated on the webpage and I can iterate through the object and process all of the items that are checked at the same time, pass all parameters to the various reports.

Users of these website have requested that after selecting (checking) which values they want to choose, they want the reports to run automatically and don't want to click a "Run reports" button. I am doing this currently with the other control.

*** How could I possibly determine when the user is done checking/unchecking items using the "TextChanged" event?  

With an OnBlur or OnClose event it's a No-Brainer.  Event --> Do Processing...

Our company made a decision to standardize our tool set and picked Telerik as that toolset vendor.  The lack of having an event that fires similar to the control that I have been using in the past will require unnecessary code modification.

In summary, if there was a similar event I could simply rename each instance of my C# event handlers (methods) across all projects, then modify that code to iterate through the RadComboBox instead of the control I currently use and be done.  Find --> Replace, mostly. 

For the one (1) instance of the RadComboBox that I have tried I was able to create a work-around by placing code in the IsPostback of the Page_Load event and iterate through the radcombobox, getting the checked values and then doing whatever processing  needs to be done.  This not work for most of the pages in my projects mentioned above due to different circumstances.

Thanks!

The input box (TextBox) portion of the Rad Combo box could benefit from the ability to customize/format the data presented within said element.  Having the ability to toggle it to a multi-line TextBox would aid in this ability as well.  Having the ability to implement custom html in the form of a template, perhaps a SelectionBoxTemplate, would open the control of the display to be completely customizable.

Please consider this enhancement in a future release.

Thanks...

Why don't you include a boolean property to show selected image inside input ?

This is already a code library to do it :
http://www.telerik.com/support/code-library/show-the-selected-item-image-in-input

add ability for radcomboboxitem to expose the attributes collection for the selected item when client-side binding occurs via a webservice.  (based on support id 87724).  Currently only selected text and values are accessible when posted back.  The attributes related to the selected item are as important to provide proper context once on the server side.  Again, this only necessary for the selected item, not all items as I understand the ramifications to client side performance.

If a combobox uses load-on-demand and an item is selected, after postback the item list will be filtered to only items that contain the text of the selected item.  This type of filtered loading is desirable when the user is typing into the combobox and is expecting a reduced item list.  However it can be unexpected behavior if an item is selected, the user was not typing into the combobox, a postback occurs, and then the item list has been reduced.

This video demonstrates the current behavior:
http://screencast.com/t/NVkDc3KYR

And so my request is for the combobox items list to remain the same after postback when the user did not intend for the item list to be reduced.

In a FormView, a routine scenario is to provide a control that has some sort of picklist (either DropDown or ComboBoxList) that may be tied to a field that contains a DBNull.

An example might be where one of the fields in the Telerik Profile specifies their favorite Telerik Product (KendoUI, ASP.NET AJAX, etc.).  However, their might be profiles where the user has not selected a favorite product.  Assuming that the Product list comes from a related table, then this field (say, FavoriteProductId) in the Profile would contain a DBNull.

I would like Telerik to add "declarative" functionality on the RadComboBox and RadDropDownList to handle the case where SelectedValue = DBNull.

Below is an example of what this might look like for a RadComboBox (inside of a FormView -- note: only showing the RadComboBox declaration).

<telerik:RadComboBox Style="z-index: 9100"  ID="rcbFirstOrder" runat="server" Width="50px" SelectedValue='<%# Bind("FirstOrder") %>'     HandleDBNull="true" >
    <Items>
        <telerik:RadComboBoxItem runat="server" Text="" Value="DbNull (or Null or Nothing)" />
        <telerik:RadComboBoxItem runat="server" Text="No" Value="0" />
        <telerik:RadComboBoxItem runat="server" Text="Yes" Value="255" />
    </Items>
</telerik:RadComboBox>

Notice the new property ---    HandleDBNull = true       and the ability to define the value on a RadComboBoxItem as DBNull (or null or nothing) -- some string to define DBNull.

Although the above example shows all the RadComboBoxItems defined declaratively, this scenario could easily be extended to use AppendDataBoundItems = true and the non-DBNull values to come from a Data Source.

Thanks for taking the time to consider this functionality.  This enhancement would remove all of the code-behind tweaks that are currently incorporated to use a ComboBoxList / DropDownList with a database field that can contain DBNull.

We have evaluated your controls for few days for the last 3 years now. And you still dont support check boxes and load on demand. (we keep getting the same response from your forms). There are other companies already do that. If you can include this feature in your future development that will be great. As i have mentioned to your sales team about the team size and the number of license we need but unfortunately this feature is not available so we can not buy your controls. Thanks

Having a RadCombobox on a form and assign a EmptyMessage later containing a diacritical character, the EmptyMessage is treated like it has been entered as a value.
So it will make a call to the webservice using that value which it should not do.

Code example:
        protected void TestLinkButton_Click(object sender, EventArgs e)
        {
            this.CountryComboBoxControl.EmptyMessage = "Bitte wählen Sie ein Land*";
        }

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.

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

Using the .get_value() in the OnClientDropDownClosed event of RadComboBox, produces empty value. The OnClientSelectedIndexChanged event works fine, but I need to be able to kick off the javascript even if the selected index doesn't change. 

My RadComboBox element:

<telerik:RadComboBox ID="CustomerSearch" runat="server" Width="180" Height="160"  
        MarkFirstMatch="true"  AllowCustomText="true" CssClass="CustomerSearch" AutoPostBack="false" 
        EnableLoadOnDemand="true" EnableVirtualScrolling="true" OnItemsRequested="CustomerSearch_ItemsRequested" 
        OnClientDropDownClosed="searchnav" EmptyMessage="Select a customer" DataSourceID="dsCustomer" DataTextField="CustomerName" 
        DataValueField="NavPath" BackColor="White" Skin="Forest" />

My SQLDataSource element:
<asp:SqlDataSource ID="dsCustomer" runat="server"
    SelectCommand="CustomerSearchName" SelectCommandType="StoredProcedure">
</asp:SqlDataSource>

My Javascript:
<telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
    <script type="text/javascript">
        function searchnav(sender, args) {
            var iframe = document.getElementById('ctl00_iMainPages');
            iframe.src = sender.get_value();
        }
    </script>
</telerik:RadScriptBlock>

There is problem selected value radcombox with Ajax modal pop up pls suggest the solution for that

Add ability to filter with accent sensitive, IsAccentSensitive property  (like the existing IsCaseSensitive).

Hi There,
i am working on asp.net 4.0 with telerik asp.net ajax control. The problem i am facing is that all the controls are not working but the same files were working in asp.net 3.5, for example i am attaching a error page which is showing a radcombobox as a text box. I am not being able to figure out the issue/bug whether it is because of RadStyleSheetManager or RadScriptManager.

Kindly help me with this issue.