For RadDatePicker calendar control. I am trying to make the calendar popup control to be keyboard accessible by adding attributes: EnableKeyboardNavigation="true". Tabbing to the calendar and hitting spacebar or Enter key open up the calendar popup. This works well in navigating inside the popup calendar but if you don't change the existing date in the popup calendar and you hit spacebar or Enter key, the popup doesn't close or no window event was happening. It will close only if you change the date. I want the popup calendar to close even without updating the existing date.
Please help...I can't find a solutions from the internet....

Is this a known issues for Telerik RadDatePicker?  thanks.

I have a filter column in my radgrid. Recently, I upgraded my telerik controls and the filter dropdown looks weird with a select word in it.

How can I remove the select word and show just the dropdown arrow.

Below is the rendered css from the developer tools:

I want to add a custom header to each page of my pdf export.

My grid code has the following declaration.

1 - I have a left margin of 20px but my header does not align with the rest of the export. How can I add a padding to it.

2 - I also want to add a horizontal rule to each page just above the header. If I add it to the string below it just shows in the left cell and it also breaks my header into two separate pages.

Hi,

We are using latest RadGrid control with visual studio 2017. I have asp.net c# page with regular dropdownlist and RadGrid. Radgrid clientside binding should happen only when an item is selected in dropdownlist by passing selected value of dropdown to the webservice call. How can I do this binding on client side.

something like this:

protected void ddlDropdownList_SelectedIndexChanged(object sender, EventArgs e)
{   //clientside binding of grid should happen by passing ddlDropdownList.SelectedValue

}

We have a RadListBox where we are adding and removing items via client side code (sample add shown):

ListBox_AddItem = function (listbox, text, value) {
    var item = new Telerik.Web.UI.RadListBoxItem();
    item.set_value(value);
    item.set_text(text);
    var attributes = item.get_attributes();
    attributes.setAttribute("Name", text);
    attributes.setAttribute("ID", value);
    listbox.trackChanges();
    listbox.get_items().add(item);
    item.bindTemplate();
    listbox.commitChanges();

    return false;
}

<telerik:RadListBox runat="server" ID="RadListBox" ClientIDMode="AutoID"
                                        OnClientLoad="RadListBox_OnClientLoad">
                                        <ItemTemplate>
                                            <table>
                                                <tr>
                                                    <td>
                                                        <%# Eval("Name") %>
                                                    </td>
                                                    <td id="DeleteColumn" style="float: right">
                                                        <a href="" onclick="return deleteRequestedBy('<%# Eval("id") %>')">
                                                            <img src="Images/deletered.png" width="20" height="20" alt="submit" />
                                                        </a>
                                                    </td>
                                                </tr>
                                            </table>
                                        </ItemTemplate>
                                        <ClientItemTemplate>
                                            <table>
                                                <tr>
                                                    <td>
                                                        #= Attributes.Name#
                                                    </td >
                                                    <td id="DeleteColumn" style="float:right">
                                                        <a href="" onclick="return deleteRequestedBy('#= Attributes.ID#')">
                                                            <img src="Images/deletered.png" width="20" height="20" alt="submit" />
                                                        </a>
                                                    </td>
                                                </tr>
                                            </table>
                                        </ClientItemTemplate>

                                    </telerik:RadListBox>

The ListBox is in a Tab on a RadTabStrip. When we add or remove items from the ListBox and then click on one of the other tabs we get an error:

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

at System.Collections.ArrayList.get_Item(Int32 index)
at System.Web.UI.StateManagedCollection.System.Collections.IList.get_Item(Int32 index)
at Telerik.Web.UI.ControlItemCollection.get_Item(Int32 index)
at Telerik.Web.UI.ClientStateLogPlayer`1.Remove(ControlItemCollection items, Int32 index)
at Telerik.Web.UI.ClientStateLogPlayer`1.Play(ClientStateLogEntry entry)
at Telerik.Web.UI.ClientStateLogPlayer`1.Play(IEnumerable`1 clientStateLogEntry)
at Telerik.Web.UI.RadListBox.LoadLogEntries(RadListBoxClientState clientState)
at Telerik.Web.UI.RadListBox.LoadClientState(RadListBoxClientState clientState)
at Telerik.Web.UI.RadListBox.LoadPostData(String postDataKey, NameValueCollection postCollection)
at Telerik.Web.UI.RadDataBoundControl.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection)
at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

I've tried the solutions suggested (along with some variations):

https://www.telerik.com/forums/transfer-throws-exception

https://docs.telerik.com/devtools/aspnet-ajax/controls/listbox/troubleshooting/index-out-of-range-on-item-transfer-

However, none of the suggestions worked and don't seem to quite apply in this scenario i.e. we are not transferring.