Last Updated: 27 Jan 2023 08:58 by ADMIN
Created by: Imported User
Comments: 4
Category: Grid
Type: Feature Request
Please add support for tags in exported PDF documents. We need these tags for accessibility purposes. Currently, when we export a PDF from a RadGrid, it is created without any tag structure, which can make it difficult for a screen reader to process correctly.
Last Updated: 27 Jan 2023 08:24 by Mauro
Created by: Mauro
Comments: 0
Category: Grid
Type: Bug Report

Resizing a column in the Grid Leads to resizing of the Grid wrapper along with the GroupPanel. The problem can be replicated with the following Resizing settings:

<Resizing AllowColumnResize="true" AllowRowResize="true" EnableRealTimeResize="true" ResizeGridOnColumnResize="false" EnableNextColumnResize="true"/>

The issue occurs only on certain Screen sizes, or when the browser/display has some zoom applied.

Last Updated: 11 Jan 2023 15:43 by n/a

When a big number of items are bound to RadGrid on the server side and Virtualization is enabled paging to the last item is not working as expected.

The problem can be reproduced with the setup in the following demo:

Increasing the number of Customers bound to the Grid to more than 1000000 leads to the problem.

Last Updated: 15 Dec 2022 17:11 by ADMIN
When having at least one hidden column and the AllowColumnResize is set to true, the table cells in the DetailItemTemplate do not get the correct colspan value, hence braking the table structure.
Last Updated: 22 Nov 2022 12:12 by ADMIN
You can workaround this issue with the following CSS rule.

    div.RadGrid .t-font-icon{
        font: 16px/1 "TelerikWebUI";
Last Updated: 20 Sep 2022 11:05 by eDAD
Created by: eDAD
Comments: 0
Category: Grid
Type: Feature Request

When EnableAriaSupport is enabled for the RadGrid, the PagerItem receives role='presentation' and hence is ignored by the screenreaders.

Last Updated: 26 Aug 2022 10:57 by ADMIN
Created by: Viktor Tachev
Comments: 1
Category: Grid
Type: Feature Request

Last Updated: 24 Jun 2022 13:24 by ADMIN
Created by: Wandi
Comments: 5
Category: Grid
Type: Feature Request
There are more than 30 items (including task title) in RadGrid Task
I can't see Edit Template because my display resolution is not enough to show all Tasks.
I always get this problem with small resolution monitor.
Can you make it collapsible?
How do I go to EditTemplate? The task is not in the screen
Last Updated: 24 Jun 2022 11:32 by ADMIN
It would be convenient to be able to specify default values for SortAscImageURL and SortDescImageURL at a level above the individual column elements

At present the SortAscImageURL and SortDescImageURL attributes appear in the GridBoundColumn element.  This requires specifying them for each column definition.  Often the UI will use the same icons for all sort-able columns.
An obvious choice might be the <SortingSettings> element, as is done for the sorting tool tip and sorted background color.
Last Updated: 24 Jun 2022 11:21 by ADMIN
It becomes hard to see the checked checkboxes because of the selected color it has by default matches the select color of the grid


        .RadGrid_BlackMetroTouch .rgSelectedRow .RadCheckBox.RadButton_BlackMetroTouch .rbToggleCheckboxChecked::before,
        .RadGrid_Bootstrap .rgSelectedRow .RadCheckBox.RadButton_Bootstrap .rbToggleCheckboxChecked::before,
        .RadGrid_Metro .rgSelectedRow .RadCheckBox.RadButton_Metro .rbToggleCheckboxChecked::before,
        .RadGrid_MetroTouch .rgSelectedRow .RadCheckBox.RadButton_MetroTouch .rbToggleCheckboxChecked::before {
            color: white;

        .RadGrid_Glow .rgSelectedRow .RadCheckBox.RadButton_Glow .rbToggleCheckboxChecked::before,
        .RadGrid_Office2010Black .rgSelectedRow .RadCheckBox.RadButton_Office2010Black .rbToggleCheckboxChecked::before,
        .RadGrid_Telerik .rgSelectedRow .RadCheckBox.RadButton_Telerik .rbToggleCheckboxChecked::before,
        .RadGrid_WebBlue .rgSelectedRow .RadCheckBox.RadButton_WebBlue .rbToggleCheckboxChecked::before {
            color: black;

Sample to reproduce the behavior and compare the default colors in other states/cases:

        <telerik:RadCheckBox runat="server" ID="rcb1"></telerik:RadCheckBox>
        <br />
        <telerik:RadCheckBox runat="server" ID="rcb2" Checked="true"></telerik:RadCheckBox>
        <telerik:RadSkinManager runat="server" ID="RadSkinManager1" Skin="Bootstrap" ShowChooser="true">
        <telerik:RadFormDecorator ID="RadFormDecorator1" runat="server" DecoratedControls="All" RenderMode="Lightweight" />
        <asp:CheckBox ID="Checkbox1" Text="some checkbox" runat="server" />
        <telerik:RadGrid ID="RadGrid1" runat="server" OnNeedDataSource="RadGrid1_NeedDataSource" RenderMode="Lightweight">
                    <telerik:GridTemplateColumn HeaderText="rad check box column">
                            <telerik:RadCheckBox runat="server" ID="RadCheckBox1"></telerik:RadCheckBox>
                            <br />
                            <telerik:RadCheckBox runat="server" ID="RadCheckBox2" Checked="true"></telerik:RadCheckBox>
                <Selecting AllowRowSelect="true" />

And a dummy data source that is not a good data source in general, but it will suffice to get this running so one can observe

    protected void RadGrid1_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)
        (sender as RadGrid).DataSource = "abcdef";
Last Updated: 23 Jun 2022 13:29 by Claudio
Created by: Claudio
Comments: 0
Category: Grid
Type: Feature Request

With a lot of columns, in some cases, the latest column is clipped in a zoomed OS. For example, resolution 1920x1080 and the scale is 150% or 3840 x 2160 and the 150% scale.



Adding the following script somewhere after the ScriptManager(e.g. near the closing </form> or </body> tag) can improve the experience with zoomed scenarios:

<telerik:RadCodeBlock ID="RadCodeBlock2" runat="server">
        if (Telerik && (Telerik.Web.Browser.chrome || Telerik.Web.Browser.edgeChromium) && Telerik.Web.UI.GridScrolling) {
            Telerik.Web.UI.GridScrolling.prototype.onGridFrozenScroll = function (args) {
                if (!this._frozenScrollCounter) {
                    this._frozenScrollCounter = 0;

                this._needToUpdateClientState = false;

                var gridControl = this;

                gridControl._currentElement = Telerik.Web.UI.Grid.GetCurrentElement(args);

                Telerik.Web.UI.Grid.frozenScrollHanlder = function (count) {
                    var operaVersion = 10.00;

                    if ($telerik.isOpera) {
                        operaVersion = navigator.userAgent.substring(navigator.userAgent.indexOf("Version/") + "Version".length + 1) * 1;
                    if (gridControl._frozenScrollCounter != count || gridControl._owner._isResize)

                    if (!gridControl._lastScrollIndex) {
                        gridControl._lastScrollIndex = 0;
                    var masterTableView = gridControl._owner.get_masterTableView();
                    var masterTableViewHeader = gridControl._owner.get_masterTableViewHeader();

                    var currentElement = gridControl._currentElement;

                    if (gridControl._owner.ClientSettings.Scrolling.FrozenColumnsCount > masterTableViewHeader.get_columns().length) {
                        gridControl.isFrozenScroll = false;
                    var column, i;
                    if (gridControl.isFrozenScroll) {
                        var notFrozenColumns = gridControl._getNotFrozenColumns();

                        var scrollPercent = 0;
                        var notShownSpaceWidth = -1;

                        var currentElementWidthDiff = currentElement.scrollWidth - currentElement.offsetWidth;

                        if ((currentElementWidthDiff) != 0)
                            notShownSpaceWidth = currentElementWidthDiff;

                        scrollPercent = currentElement.scrollLeft / notShownSpaceWidth;

                        if (scrollPercent < 0)
                            scrollPercent = -1 * scrollPercent;

                        if (scrollPercent > 1)
                            scrollPercent = 1;

                        if (Telerik.Web.UI.Grid.IsRightToLeft(gridControl._owner.GridHeaderDiv) && ($telerik.isSafari || $telerik.isIE7))
                            scrollPercent = 1 - scrollPercent;

                        var gridColumns = masterTableView.get_columns();

                        var currentScrollPosition = currentElement.scrollLeft;
                        i = 0;
                        while (i < notFrozenColumns.length)//always show the last column
                            column = notFrozenColumns[i];

                            var prerviousForzenDisplayWidth = notFrozenColumns._getPreviousNotFrozenColumnWidth(column.Index);

                            if ((currentElementWidthDiff) < 0)

                            var columnPercent = (column.Width + prerviousForzenDisplayWidth - 50) / notShownSpaceWidth; 

                            if (columnPercent <= scrollPercent && currentScrollPosition != 0) {
                                if (column.FrozenDisplay) {
                            else {
                                if (!column.FrozenDisplay) {


                            if (i == (notFrozenColumns.length - 1)) {
                                var prevWidthBeforeLastHidden = 0;
                                var lastHiddenColumnIndex = 0;
                                var k = 0;
                                for (var j = 0; j < gridColumns.length - 1; j++) {
                                    if (typeof (gridColumns[j].FrozenDisplay) == 'boolean' && !gridColumns[j].FrozenDisplay) {
                                        prevWidthBeforeLastHidden += notFrozenColumns[k].Width;
                                        lastHiddenColumnIndex = j;
                                if ((prevWidthBeforeLastHidden - notShownSpaceWidth) < notFrozenColumns[notFrozenColumns.length - 1].Width + 25) {
                                    if (scrollPercent < 0.5) {
                                        var nextColumnToHide = notFrozenColumns[notFrozenColumns.length - 1];
                                    } else {
                                        var nextColumnToHide = notFrozenColumns[k];

                        gridControl._afterColumnFreeze(masterTableView, masterTableViewHeader, scrollPercent);

                        if (scrollPercent > 0.9999 && $telerik.isFirefox) {
                            masterTableViewHeader.get_element().style.width = masterTableViewHeader.get_element().offsetWidth + "px";
                            masterTableViewHeader.get_element().style.tableLayout = "auto";
                            masterTableViewHeader.get_element().style.tableLayout = "fixed";

                            masterTableView.get_element().style.width = masterTableViewHeader.get_element().offsetWidth + "px";
                            masterTableView.get_element().style.tableLayout = "auto";

                            masterTableViewHeader.get_element().style.tableLayout = "";
                                function () {
                                    if ($telerik.isFirefox && Sys.Browser.version >= 4)
                                        masterTableView.get_element().style.tableLayout = "fixed";
                                    masterTableViewHeader.get_element().style.tableLayout = "auto";
                                    masterTableViewHeader.get_element().style.tableLayout = "fixed";

                        if (gridControl._owner.get_masterTableViewFooter()) {

                            gridControl._owner.get_masterTableViewFooter().get_element().style.width = masterTableViewHeader.get_element().offsetWidth + "px";
                            gridControl._owner.get_masterTableViewFooter().get_element().style.tableLayout = "auto";
                            gridControl._owner.get_masterTableViewFooter().get_element().style.tableLayout = "fixed";

                    else {
                        gridControl._owner.GridDataDiv.scrollLeft = currentElement.scrollLeft;

                    gridControl._frozenScrollCounter = 0;
                    gridControl._needToUpdateClientState = true;
                    setTimeout(Telerik.Web.UI.Grid._clientStateUpdater, 500);

                    if (gridControl._owner.get_events().getHandler("scroll")) {
                        gridControl._owner.raise_scroll(new Telerik.Web.UI.GridScrollEventArgs(gridControl._currentElement));

                Telerik.Web.UI.Grid._clientStateUpdater = function () {
                    if (gridControl._needToUpdateClientState) {
                        gridControl._needToUpdateClientState = false;
                window.frozenScrollTimeout = setTimeout("Telerik.Web.UI.Grid.frozenScrollHanlder(" + this._frozenScrollCounter + ")", 30);



Last Updated: 23 Jun 2022 10:16 by ADMIN

When AJAX is enabled for the Grid with the <PagerStyle Mode="Advanced"> or <PagerStyle Mode="NextPrevNumericAndAdvanced"> the Go To Page by Number and Change Page Size Bugtons would not work.

On the other hand, if changing the Page or PageSize by typing and hitting the ENTER key instead of clicking the buttons, the Grid will behave accordingly.

Issue appears in RenderMode="Lightweight"


Last Updated: 23 Jun 2022 09:46 by ADMIN
Created by: Ivan Zhekov
Comments: 2
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.
Last Updated: 22 Jun 2022 11:47 by ADMIN
Last Updated: 22 Jun 2022 10:13 by ADMIN
with client-side databinding when setting sort/filter expressions on button click and then calling the rebind or set_currentPageIndex methods the control makes multiple requests to the web service.
Last Updated: 21 Jun 2022 22:04 by ADMIN
The selector area of the dragging to select automatically goes all the way to the left; could that be changed so that the area shows up only from where the user clicked to where the cursor goes, like Windows Explorer? (see attached image)
Last Updated: 21 Jun 2022 15:04 by ADMIN
The RadGrid OnDataBindingFailed event does not fire when WCF/WebService returns an IIS 500 Errror page.

It DOES, however, fire when IIS returns a proper 500 error JSON response.

In my case, the former was happening because my ASP.NET WCF services were incorrectly configured and thus throwing a standard IIS 500 error page. RadGrid should recognize the IIS 500 page as failure and spawned a OnDataBindingFailed  event.

NOTE: For example, RadScheduler *does* correctly interpret the IIS 500 page as a failure (RE: OnClientRequestFailed).
Last Updated: 21 Jun 2022 15:03 by ADMIN
Since Q3 a change in the client-side binding of the GridTemplateColumn has been introduced. The column no longer automatically populates controls in the ItemTemplate. The change is result of an optimization in code regarding the virtualization and batch editing features of the grid. The new behavior is far more optimized and ensures much faster and robust operation of the control in various cases of client-side binding.
Last Updated: 21 Jun 2022 14:57 by ADMIN
Last Updated: 20 Jun 2022 14:58 by ADMIN
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