Pending Review
Last Updated: 11 Dec 2017 22:00 by Joel
Created by: Joel
Comments: 0
Category: Ajax
Type: Bug Report
I have a RadGrid with several thousand elements on it. In attempting to improve performance, the Visual Studio profiler informed me that it spent more than half of the request in PopulatePlainPanels checking whether something was in a list. (see attached before.png)

I changed the type of the variable plainPanelsClientIDs in RadAjaxControl.cs to be a HashSet<string> instead of a List<string>. As a knock-on effect, I had to import System.Linq into RadAjaxManager.cs to get the .toArray() call to work.

The result in the attached after.png shows the percentage of execution time dropped from 55% to 3%.

I'd appreciate it if the team would evaluate this change for inclusion in future releases.

Note 1: I have not done extensive testing on this, so I don't know what might break. The variable isn't referenced much, so the only thing I'm suspicious of is reflection, which I didn't check for and don't expect.
Note 2: If importing Linq is undesirable, a more manual conversion to an array can be done pretty easily.
Note 3: plainPanelsClientIDs is .add() 'ed to in two places, and both check for membership before being called. This shouldn't be necessary for a HashSet, which simply doesn't add if it's there. This seems a very minor improvement, but I didn't actually try it yet.
Pending Review
Last Updated: 06 Dec 2017 12:53 by ADMIN
The date pickers default to the year 1999 and do not accept inputs, so you cannot filter GridDateTimeColumn instances through the header context menu or the excel-like filtering. The standard filter item and range filter can still be used instead of context menus, but they are not available with excel-like filtering.
Pending Review
Last Updated: 27 Nov 2017 12:10 by JF
Created by: JF
Comments: 0
Category: Spreadsheet
Type: Bug Report
Problem with simple excel behavior.

In excel when you type a string longer than the cell, text is not clipped and shows over other cells.  Then, if you fill adjacent cell, text is then clipped.

I've been able to mimic this behaviour using this css:

.RadSpreadsheet .rssPane .k-spreadsheet-cell {
    overflow: visible !important;

But then, If you highlite those cells with background color  the text is again clipped.  The background color wipe the text.

Attached is a small png to show the problem.

Please fix this to work as excel.  Users are complaining non stop.

Pending Review
Last Updated: 25 Aug 2017 08:11 by Arvind
For Bug Report :

Note: We are using MM/dd/yyyy as Internal Date format to prevent issue while inserting or updating value.

Steps to reproduce:
When we use dd-MM-yyyy and yyyy-dd-MM Date DisplayFformat for RadDatePicker/RadDateTimePicker control as well as view mode in Radgrid Batch Edit mode it's render behaviour is inconsistent
1. When dd is less than or equal to 12 then while rendering in edit mode Month and Date is interchanged
2. When dd is greather than 12 then while rendering in edit mode Month and Date is rendered correctly.
Pending Review
Last Updated: 21 Jun 2017 18:33 by moegal
The FooterAggregateFormatString functionality of the Grid does not affect the Aggregates values format in a client-bound Grid.

Code to reproduce:
            <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server" ClientDataSourceID="RadClientDataSource1" AllowPaging="true" AllowSorting="true" AllowFilteringByColumn="true" ShowFooter="true">
                <MasterTableView ClientDataKeyNames="CustomerID" EditMode="Batch" CommandItemDisplay="Top" BatchEditingSettings-HighlightDeletedRows="true">
                        <telerik:GridBoundColumn DataField="CustomerID" HeaderText="Customer ID"  Aggregate="Count" FooterAggregateFormatString="No currency sign here: {0:C}">
                        <telerik:GridBoundColumn DataField="CompanyName" HeaderText="Company Name" ColumnEditorID="GridTextBoxEditor">
                        <telerik:GridBoundColumn DataField="ContactName" HeaderText="Contact Name" ColumnEditorID="GridTextBoxEditor">
                        <telerik:GridBoundColumn DataField="ContactTitle" HeaderText="Contact Title" ColumnEditorID="GridTextBoxEditor">
                        <telerik:GridClientDeleteColumn HeaderText="Delete">
                            <HeaderStyle Width="70px" />
                    <ClientEvents OnUserAction="UserAction" />
Pending Review
Last Updated: 12 Jun 2017 08:42 by Stephen
Created by: Stephen
Comments: 0
Category: ComboBox
Type: Bug Report
Given a RadComboBox with search, if the user enters some search text and then clicks on one of the filtered entries in the dropdown list the validation event is fired as the entry box loses focus and results in a 'false' return from validation as it uses the 'Text' property which is the search string. Validation is then refired as a result of clicking on the entry.
However, the initial 'false' return can cause unwanted behaviour in code that depends on the validation event.
I can supply a sample project demonstrating the problem, but it needs more than the 10 MB upload limit.
Pending Review
Last Updated: 31 May 2017 14:31 by ADMIN
Pending Review
Last Updated: 30 May 2017 07:14 by Satish
Put more than two RadDatePicker with single SharedCalendar on page. some RadDatePicker are in side of UpdatePanel with a button in it. when I press that button RadDatePicker behaviour is strange. 
RadDatePicker inside UpdatePanel not opening Calendar popup while RadDatePicker outside UpdatePanel opens calendar popup but gives javascript error on any date selection. the javascript error is "Unable to get property '_selectedDates' of undefined or null reference".
It looks like it is destroying shared calendar object on partial postback.
Please find below sample code to replicate the issue. after clicking "Submit" button, it doesn't open calendar popup for "Date 2" and for "Date 1" it opens but doesn't allow to select date and gives JavaScript error.

<asp:ScriptManager ID="sc1" runat="server" />
<telerik:RadCalendar ID="dtCal" runat="server" EnableMultiSelect="false" />
Date 1:
<telerik:RadDatePicker ID="dt1" Width="103px" runat="server" SharedCalendarID="dtCal" />
<hr />
<asp:UpdatePanel runat="server" ID="up">
		Date 2:
		<telerik:RadDatePicker ID="dt2" Width="103px" runat="server" SharedCalendarID="dtCal" />
		<br />
		<asp:Button runat="server" ID="btnDT" Text="Submit" />

When i add all controls in UpdatePanel it works properly. but Actual code is much more complex than above sample with too many lines of javascript code and many date pickers on single page and simply all Calendar and DatePicker controls can not be moved in UpdatePanel.
Pending Review
Last Updated: 30 May 2017 07:01 by Satish
"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 :
Pending Review
Last Updated: 07 Apr 2017 12:32 by ADMIN
A workaround is to have the tile list use the Default skin and change the tiles classes with JavaScript in the OnClientTileDataBound event

			<asp:ScriptManager ID="Scriptmanager1" runat="server" />
			<telerik:RadSkinManager runat="server" ID="rsm1" Skin="mySkinName"></telerik:RadSkinManager>
			<telerik:RadClientDataSource runat="server" ID="RadClientDataSource1" PageSize="8" AllowPaging="true">
					<WebServiceDataSourceSettings BaseUrl="">
						<Select Url="products" DataType="JSONP" />
			<telerik:RadTileList ID="rtl" runat="server" RenderMode="Classic" TileRows="3" SelectionMode="Multiple" OnClientTileDataBound="createTile" OnClientTileClicked="tileClicked" EnableEmbeddedSkins="false" Skin="Default" ClientDataSourceID="RadClientDataSource1">
					<CommonTileBinding TileType="RadContentTemplateTile" DataNameField="ProductID" DataTitleTextField="ProductName" DataBadgeValueField="UnitPRice" Shape="Square" />
					<div style="height: 150px; background-image: url('#= ProductName #');">
						<div style="padding: 5px 8px 3px 8px;">
							<div>#= ProductName #</div>
							<div style="font-size:0.8em; width: 134px; word-wrap:break-word; padding-bottom: 8px;">#= UnitsInStock #</div>
							<div class="field pad" >
								<img src="images/email.png" title="Can be emailed">
							<div class="field pad">
								<img src="images/SMS.png" title="Can receive SMS">
							<div class="field pad">
								<img src="images/noentry.png" title="Has a restricted password">
				<div style="height: 150px; background-image: url('styles/#= ProductName #/images/large/user.jpg');">
					<div style="padding: 5px 8px 5px 8px; width: 134px; height: 140px; background-color: azure;">
						<div>#= ProductName #</div>
						<div class="field" style="font-size:0.8em; width: 100px;">#= ProductID #</div>
						<div class="field" style="font-size:0.8em; width: 34px; text-align: right;">#= ProductID #</div>
						<div class="field" style="font-size:0.8em; width: 100px;">#= ProductName #</div>
						<div class="field" style="font-size:0.8em; width: 34px; text-align: right;">#= ProductName #</div>
						<div class="field" style="font-size:0.8em; width: 100px;">#= UnitPrice #</div>
						<div class="field" style="font-size:0.8em; width: 34px; text-align: right;">#= UnitPrice #</div>
						<div class="field" style="font-size:0.8em; width: 100px;">#= UnitsInStock #</div>
						<div class="field" style="font-size:0.8em; width: 34px; text-align: right;">#= Discontinued #</div>
				function createTile(sender, args) {
					var tileElem = $telerik.$(args.get_tile().get_element());
				function tileClicked() {
Pending Review
Last Updated: 09 Feb 2017 15:05 by Rayne
Created by: Ivan Zhekov
Comments: 1
Category: Grid
Type: Bug Report
RadGrid base styles override skins e.g. "border: 1px solid" will override any value for "border-color" that come from non-embed skins.
Pending Review
Last Updated: 02 Feb 2017 11:59 by ADMIN
Created by: Marin Bratanov
Comments: 0
Category: Button
Type: Bug Report
select an item from the dropdown, different than "1"
expected: buttons become enabled
actual: radbutton is still disabled

        <asp:Button ID="ButtonTest" runat="server" enabled="true" Text="Test" EnableViewState="False" />
        <telerik:RadPushButton ID="RadButtonTest" runat="server" Text="RadButtonTest" Enabled="True" EnableViewState="False" RenderMode="Lightweight"></telerik:RadPushButton>
        <asp:DropDownList runat="server" ID="DropDownTest" AutoPostBack="True" OnSelectedIndexChanged="SelectedIndexChanged_Test">
                <asp:ListItem Text="1" Value="1"></asp:ListItem>
                <asp:ListItem Text="2" Value="2"></asp:ListItem>
                <asp:ListItem Text="3" Value="3"></asp:ListItem>
                <asp:ListItem Text="4" Value="4"></asp:ListItem>

		protected void Page_LoadComplete(object sender, EventArgs e)
			if (DropDownTest.SelectedValue == "1")
				ButtonTest.Enabled = false;
				RadButtonTest.Enabled = false;
				string script = string.Format("function f(){{$find('{0}').set_enabled({1});Sys.Application.remove_load(f);}}Sys.Application.add_load(f);",
				ScriptManager.RegisterStartupScript(Page, Page.GetType(), "someKey", script, true);

		protected void SelectedIndexChanged_Test(object sender, EventArgs e)
Pending Review
Last Updated: 24 Jan 2017 15:05 by Andrea
Due to recent changes to the keyboard accessibility of the RadMenu (i.e. it is now only accessible using the arrow keys instead of moving around using tabs), mega menus are no longer keyboard accessible.

We have designed a mega menu using a telerik RadSiteMap embedded in a RadMenu control, as suggested in the Telerik Demo site:

However, this is no longer accessible. Previously, you could open the dropdown by pressing the down button, then move around in the dropdown using tab. Now, however, pressing tab just closes the dropdown.

We need the menu to be accessible in one way or another.
Pending Review
Last Updated: 19 Jan 2017 22:55 by bryan
Created by: bryan
Comments: 0
Category: DropDownList
Type: Bug Report
RadDropDownList has an attribute "DropdownWidth" that controls the width of the LIST when it drops down.   

If you set the width to a specific number of pixels (say 200px) then there is no issue.   But if you set it to "100%"  then I would have expected it to be 100% of the owner controls width.   But this is not the case, and it becomes very evident when the RadDropDownList is used with a template column of a RadGrid.  

In a RadGrid template column, this setting causes the LIST width to expand all the way to the right edge of the screen.   This seems to me to be a bug, as it makes no sense to behave this way.   You can see this behavior in the screenshot I have attached.  

It becomes more evident that this was not the intended functionality (and must be a bug) when you substitute the control with a RadComboBox, having exactly the same attributes.  This will use the combo's default settings and show a dropdown list.  With the RadCombBox the LIST does not expand to the far right of the screen, it behaves as expected, having 100% of the combobox width.  

I would expect both controls to work identically with their LISTS when setting the "DropdownWidth" attribute to "100%".
Pending Review
Last Updated: 05 Jan 2017 11:07 by Bo
The SpreadProcessing library gets into account the current server culture and the SpreadsheetDocumentProvider uses different decimal and list separators based on the culture while the RadSpreadsheet control supports only comma as a list separator and dot as a decimal separator. 

The JavaScript error that is thrown when using the "sv-SE" culture is caused by the fact that this culture uses the comma as a decimal separator and semicolon as a list separator. 

One possible workaround is to change the current thread's culture before creating the Spreadsheet's provider and then restore the culture.
Pending Review
Last Updated: 08 Nov 2016 15:15 by ADMIN
Pending Review
Last Updated: 21 Oct 2016 07:19 by Société CompuGROUP Medical Solutions
Created by: Société CompuGROUP Medical Solutions
Comments: 0
Category: HtmlChart
Type: Bug Report
If you set in code behind CharTitle with simple Quote like 
RadChart1.ChartTitle.Text = "Présences sur l'année sélectionnée";
you obtain a blank space chart (nothing display)

you have to set for running
RadChart1.ChartTitle.Text = "Présences sur l&#039;année sélectionnée";
Pending Review
Last Updated: 21 Jun 2016 14:52 by Alexandre
Using the client-side requestItems method of a RadComboBox to fire the refresh of it's items(with a call to clearCache before to ensure that the refresh is performed), doesn't always perform the async callback request, sometimes resulting in the "Loading" text being added at the top of the combo's items drop-down and staying there (as the callback to the server is never fired, so it's result never received). 

After quite a bit of trials, I finally managed to figure out that the issue arise when there is an async postback in progress on the page (to refresh an update panel) when requestItems is called.

Stepping through the requestItems call with IE F12 tools, I found that this is due to the fact that the Sys.WebForms.PageRequestManager do not perform callbacks if there is an async postback in progress. I think that the RadComboBox should detect that situation and wait until the end of the async postback to fire it's requestItems callback, otherwise the combo get stuck in the "loading in progress" state, waiting for the end of the callback that will never happens as the PageRequestManager did not start it. Additionally, in F12 Network tab, I can see that there is no request performed for the callback to request the items of the combo-box.

I reproduce the issue with the following steps:
1- Have a page with a RadComboBox, a ScriptManager with partial rendering enabled and an UpdatePanel.
2- In the browser, trigger the async postback to refresh the UpdatePanel
3- From JavaScript, while the async postback is in progress, call the requestItems method of the RadComboBox
4- Open the drop-down of the combo, and you can see the "Loading" text at the top, with the initial list of items. And it stays like this until another call is made to requestItems when there is no async post-back in progress which will actually perform the callback.
Pending Review
Last Updated: 11 Mar 2016 13:09 by ADMIN
A JavaScript error is thrown when a button with AutoPostback enabled on the client-side is clicked in IE.

Note: The error is thown only when the AutoPostback is enabled in the ClientClicked event handle, but not in ClientClicking.

JavaScript error:
SCRIPT5007: Unable to get property 'controlState' of undefined or null reference
File: ScriptResource.axd, Line: 658, Column: 38
Pending Review
Last Updated: 17 Feb 2016 16:07 by Charles Pugh
For our product we are using Telerik RadScheduler to display user calendar information, which we make extensive use of the Telerik.Web.UI.RecurrenceRule implementation.

Additionally we are now integrating with Google Calendar to display and edit external events within our application.

There have been several recurrence rules returned from Google that follow the iCalendar standard but RecurrenceRule has failed to parse correctly. Below are some examples of rules that have issues:

1. EXDATE value is ignored:


2. INTERVAL is ignored (interval of 1 is assigned when parsed by Telerik)


3. Parse fails completely:


1 2