It gonna be cool if ComboBox display his picture with text, like the pic shows.

Currently, the behavior on selection is to highlight the selected item, so modifying the appearance of a selected item would affect the appearance of hovered items as well.

In the meantime, a custom CSS class can be added/removed to the selected item as in the snippet below:

<script>
    function OnClientLoad(sender, args) {
        var selectedItem = sender.get_selectedItem();
        if (selectedItem) {
            $telerik.$(selectedItem.get_element()).addClass("rcbSelected");
        }
    }

    function OnClientSelectedIndexChanged(sender, args) {
        $telerik.$(sender.get_dropDownElement()).find(".rcbSelected").removeClass("rcbSelected");
        var selectedItem = sender.get_selectedItem();
        if (selectedItem) {
            $telerik.$(selectedItem.get_element()).addClass("rcbSelected");
        }
    }
</script>

<style>
    div.RadComboBoxDropDown .rcbSelected {
        color: red;
        background-color: lightgreen;
    }
</style>
<telerik:RadComboBox ID="RadComboBox1" runat="server" RenderMode="Lightweight" OnClientSelectedIndexChanged="OnClientSelectedIndexChanged" OnClientLoad="OnClientLoad" MaxHeight="150">
    <Items>
        <telerik:RadComboBoxItem Text="Item 1" />
        <telerik:RadComboBoxItem Text="Item 2" />
        <telerik:RadComboBoxItem Text="Item 3" Selected="true" />
        <telerik:RadComboBoxItem Text="Item 4" />
    </Items>
</telerik:RadComboBox>

Based on customer feedback:

The RadFormDecorator decorates most native input controls, but does miss some, namely in ComboBox and ListBox.

As this [the lack of decoration] is something advertently done, due to various issues in different browsers, we should thread carefully.

Hi,

This is a follow on request from a ticket raised where it was stated this feature isn't available and there is no work around.

When you hook a RadCombobox to a RadClientDataSource, which returns a paginated set of results along with a count of total number of records, the RadCombobox should display the "Show More Results" box along with the text stating "Items 1 - x of y" as all that information should be able to be calculated from the data returned.

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

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.

Hello,

Here is how i bind the dropdown.

when i trype anything in dropdown it only search based on product code, but i also want search to perform on product code, Product name and wood type code.

Please let me know how can i achieve same.

<telerik:RadComboBoxDataSourceID="SqlDataSource1"DataTextField="ProductCode"DataValueField="idxProductPriceID"EnableAutomaticLoadOnDemand="True"ItemsPerRequest="10"ShowMoreResultsBox="true"EnableVirtualScrolling="true"AutoPostBack="true"OnSelectedIndexChanged="drpProduct_SelectedIndexChanged"EnableLoadOnDemand="true"EnableScreenBoundaryDetection="true"HighlightTemplatedItems="true"MarkFirstMatch="false"Filter="Contains"ID="drpProduct"DropDownAutoWidth="Enabled"Width="100px"runat="server"><HeaderTemplate><tablestyle="width: 100%"cellspacing="0"cellpadding="0"><tr><tdstyle="width: 20%;">Product Code
                                                        </td><tdstyle="width: 40%;">Product Name
                                                        </td><tdstyle="width: 40%;">Wood Type Code
                                                        </td></tr></table></HeaderTemplate><ItemTemplate><tablestyle="width: 100%"cellspacing="0"cellpadding="0"><tr><tdstyle="width: 20%;"><%#DataBinder.Eval(Container.DataItem, "ProductCode")%></td><tdstyle="width: 40%;"><%#DataBinder.Eval(Container.DataItem, "ProductName")%></td><tdstyle="width: 40%;"><%#DataBinder.Eval(Container.DataItem, "WoodTypeName")%></td></tr></table></ItemTemplate></telerik:RadComboBox><asp:SqlDataSourcerunat="server"ID="SqlDataSource1"ConnectionString="<%$ ConnectionStrings:Default %>"ProviderName="System.Data.SqlClient"SelectCommandType="StoredProcedure"SelectCommand="3_ProductList_Select"></asp:SqlDataSource>

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...

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!

Please add a Server Side event for OnBlur or OnClose for the RadComboBox.

The Telerik support team 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) which fires when you click anywhere out side the dropdown.  This is perfect because many of these dropdowns supply parameters to SSRS reports that open on the webpage and users of these webpages have requested that after selecting (checking) which values they want, they want the reports to run automatically and don't want to click a "Run reports" button. 

*** 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 the C# event handlers (methods)  across all projects and be done.  Find --> Replace. 

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 Page_Load and iterate through the combobox, getting the checked values and then whatever processing  needs to be done.  This will not work but for very few of the pages in the projects mentioned above.

Thanks!

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. 

MarkFirstMatch and Filter functionalities are not supported when checkboxes are enabled, as specified in the Checkbox Support help article. If you remove these two functionalities, the Check All checkbox works as expected.


I want to have on the MarkFirstMatch and the filter on and the "all" to be shown.

see ticket number 942452

the dorpdown area doesn't support html encoded data.

To maintain accessibility consistency with normal HTML select comboboxes, we need the RadComboBox to support the Home and End keys to jump to the 1st and last item respectively.  Currently, it just moves the text cursor to the start/end of the textfield.

If the change can't be made globally, can a new property be set to control this behavior?
Ideally too, Page Up/Down can jump multiple items at a time.  Currently, it scrolls the page.

See a 2009 forum post too (from someone else):
http://www.telerik.com/forums/radcombobox-home-end-page-up-page-down-keys
I see the other keyboard shortcuts listed here:
http://demos.telerik.com/aspnet-ajax/combobox/examples/functionality/keyboardsupport/defaultcs.aspx

Per Anton: The keyboard support is specification is implemented according to the article (https://www.w3.org/TR/2013/WD-wai-aria-practices-20130307/#combobox) which is why there is no support for these keys.

We would like to request these additional keys be supported anyway.

[From ticket 1083598]

please add native columns support for radcombobox

<Columns>
      <Column DataField="CategoryName" />
      <Column DataField="Description"  />
</Columns>

best regards

RadCombobox WAI-ARIA improvements 

1. When we have a selection but do not have filtering and custom text:

aria-autocomplete: list ---> Combobox list item
2. When we have selection and filtering: ---> Combobox inline completion list item
aria-autocomplete: both
3. disabled: aria-autocomplete: none 

https://www.w3.org/TR/wai-aria-practices/examples/combobox/aria1.0pattern/combobox-autocomplete-both.html

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?