Last Updated: 22 Mar 2019 13:23 by MikeK
Created by: MikeK
Comments: 0
Category: UI for ASP.NET AJAX
Type: Feature Request

We could use a new calendar control that works differently than the scheduler, or any existing calendar control. 

Overview of features and how it would work:

  • User selects a month, the calendar auto draws the month as a calendar view with options to set day of week as short, medium or full length.
  • The calendar has an input field which can handle validation if needed. Validation example:
    • Only accept integers
    • In logic, if X = Whatever, then only allow input value of 1.

  • Treat as an array so we could loop through the control and read each value for saving to database or to take action on from code.

  • Example shown below. This is dynamically creating using tables and HTML. Not the nicest looking, and a pain to reuse anywhere. We could make use of this type of control in a lot of applications.




Last Updated: 15 Mar 2019 10:55 by ADMIN
Currently, to make the MultiColumnComboBox control work in an EditTemplate of a Grid in Batch EditMode, custom implementation is needed as explained in Batch Editing Working With Templates and demonstrated here: Show short date, edit full date with batch editing
Last Updated: 08 Mar 2019 10:41 by Dan Avni
Created by: Dan Avni
Comments: 0
Category: UI for ASP.NET AJAX
Type: Feature Request
When resizing a column in RTL, expectation is to use the left side of a column to expand/shrink it. Instead I have to use the right side. Grabbing the left side resizes the next column on the left and is very confusing for people who are used to think in RTL
Last Updated: 06 Mar 2019 12:21 by Scott
Created by: Daniel
Comments: 2
Category: MultiColumnComboBox
Type: Feature Request
The new MultiColumnComboBox control does not have any server side events.  Can you provide the same server side event that you have for the ComboBox? 
Last Updated: 04 Mar 2019 21:39 by ADMIN
Last Updated: 04 Mar 2019 15:22 by Rodney
There should be RadGrid.ExportSettings.WorksheetName property to name a Sheet inside the Excel file, instead of having it named after the RadGrid.ExportSettings.FileName property as well as to avoid additional coding to Work around this.
Last Updated: 01 Mar 2019 13:46 by ADMIN

Using an ampersand character in RadBarcode's Text leads to a server-side error. Replacing the symbol with its corresponding HTML entity allows the control to render its text successfully, but the generated image corresponds to the passed entity character.

If RadBarcode1.Text="&" the control generates this (read as "&"):

while it should be this (read as "&"):


When we generate the image by keeping ShowText = True, then it throws the exception.

When we generate the image by keeping ShowText = false, then it successfully generates the image.

Steps to reproduce:Run the following setup:

        <telerik:RadBarcode ID="RadBarcode1" runat="server" RenderChecksum="false"></telerik:RadBarcode>
    protected void Page_Load(object sender, EventArgs e)
        RadBarcode1.OutputType = Telerik.Web.UI.BarcodeOutputType.SVG_VML;
        RadBarcode1.Type = Telerik.Web.UI.BarcodeType.Code128;
        RadBarcode1.Text = "string&string"; //leads to server-side error
        //RadBarcode1.Text = "string&amp;string"; //leads to wrongly generated barcode

        RadBarcode1.LineWidth = 0;
        RadBarcode1.ShowText = true;
        RadBarcode1.ShowChecksum = false;

Last Updated: 12 Feb 2019 18:19 by Rodney Foley
ExcelML currently does not support multiple column headers (aka ColumnGroups). This was first requested in the forms back in 2012 and no feature request was created for ExcelML. It is important that ExcelML support ColumnGroups as Excel does support this functionality.
Last Updated: 12 Feb 2019 16:39 by ADMIN
Created by: Chris
Comments: 0
Category: UI for ASP.NET AJAX
Type: Feature Request
Currently the set_value() method of the RadNumericTextBox throws an exception if null is passed to it as value while having the AllowOutOfRangeAutoCorrect property is set to true. This does not happen if the AllowOutOfRangeAutoCorrect is left as default (false).

Last Updated: 12 Feb 2019 13:36 by ADMIN
Steps to reproduce the error.

Create a ClientDeleteColumn with CommandName="Delete" and wire up the onCommand client-event to RadGrid.

<telerik:RadGrid ID="RadGrid1" runat="server">
            <telerik:GridClientDeleteColumn CommandName="Delete" ButtonType="LinkButton"></telerik:GridClientDeleteColumn>
        <ClientEvents OnCommand="OnCommand" />

The event handler does not need to do anything.

function OnCommand(sender, args) {
Last Updated: 11 Feb 2019 10:40 by ADMIN
Created by: Panayotis
Comments: 0
Category: UI for ASP.NET AJAX
Type: Feature Request
GridAttachmentColumn malforms the String filepath, from "C\SomePath\SomeFile.PDF" to something like "C:" & vbBack &"SomePathSomeFile.PDF"

Steps to reproduce the error:

DataSource Bound to grid:

Private Function SomeTable() As DataTable
    Dim dt As New DataTable()
    dt.Columns.Add(New DataColumn("FieldName", Type.GetType("System.String")))
    row("FieldName") = "C:\SomeDirectory\RadGridExport.pdf"
    Return dt
End Function

GridAttachmentColumn markup as well as the ObjectDataSource that returns a byte array when user clicks on download attachment:

<telerik:GridAttachmentColumn DataSourceID="ObjectDataSource1"
    HeaderText="Attachment Column"
    ItemStyle-Width="36px" >
<asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="MySelectMethod" TypeName="MyApp">
        <asp:Parameter Name="FieldName" Type="String" />

MyApp.MySelectMethod that is supposed access the file by "filePath" and read it to byte, but the filePath is malformed, hence throws an exception.

Public Class MyApp
    <DataObjectMethodAttribute(DataObjectMethodType.Select, True)>
    Public Function MySelectMethod(filePath As String) As DataTable
        Dim dt As New DataTable("Base")
        Dim col As New DataColumn("FieldName")
        col.DataType = System.Type.GetType("System.Byte[]")
        Dim row As DataRow = dt.NewRow
        row(0) = My.Computer.FileSystem.ReadAllBytes(filePath)
        Return dt
    End Function
End Class

Last Updated: 06 Feb 2019 09:48 by ADMIN
Last Updated: 04 Feb 2019 11:47 by ADMIN
Created by: Etra
Comments: 1
Category: UI for ASP.NET AJAX
Type: Feature Request
Is it possible to show only year options using MonthYearPicker? I would like to show a YearPicker.
Last Updated: 31 Jan 2019 08:09 by ADMIN



RadWindow is not opening in Windows10 PC , ( IE 11 / Google Chrome)

Working in all windows 8 PCs 

Getting Error Script5009   'Telerik' is undefined script block  (37) (2,5) in the IE Console



Last Updated: 29 Jan 2019 17:52 by Pat
Created by: Erik
Comments: 1
Category: Grid
Type: Feature Request
I would like to get a visual indiation on the grouppanel of the RadGrid for column which are not allowed to group on.

Forum reference:
Last Updated: 23 Jan 2019 13:43 by ADMIN
Created by: Daniel
Comments: 1
Category: MultiColumnComboBox
Type: Feature Request
What is the best approach to AutoSize the contents of the columns in a RadMultiColumnComboBox?  Is there a method or property I can use?
Last Updated: 23 Jan 2019 09:19 by SWAT


i would love to have a n option to set the Gallerry to keep the title and text visible when the Gallery is in play mode, until the user pause the gallery or move the mouse out.

a work around was provided to me by Attila, which works fine, but i think it should be a built in property.


Thanks a lot,


Last Updated: 22 Jan 2019 14:27 by ADMIN
When you have 3 documents with picture, and texts in all - the texts are shows as expected. but when one of them does not have text and title, the loop of the gallery stop showing it for the other pictures.

<telerik:RadImageGallery ID="RadImageGallery1" runat="server">
    <ThumbnailsAreaSettings ThumbnailWidth="140px" Width="140px" Position="Left" ScrollOrientation="Vertical" />
        <telerik:ImageGalleryItem ImageUrl="Images/Yoga.jpg" Title="Title 1" />
        <telerik:ImageGalleryItem ImageUrl="Images/Swimming.jpg" Title="Title 2" />

            <%-- Title container disappears here and will not show up with the rest of the items --%>
        <telerik:ImageGalleryItem ImageUrl="Images/Surfing.jpg" /> 

        <telerik:ImageGalleryItem ImageUrl="Images/Snowboarding.jpg" Title="Title 4" />
        <telerik:ImageGalleryItem ImageUrl="Images/Skiing.jpg" Title="Title 5" />
Last Updated: 18 Jan 2019 13:53 by ADMIN
Created by: Alem
Comments: 1
Category: MultiColumnComboBox
Type: Feature Request
We have just upgraded to the latest ajax version and excited about the new control 'RadMultiColumnComboBox', but we could not figure out how we can allow multiple selections.

Please let us know

Last Updated: 17 Jan 2019 14:31 by ADMIN

<telerik:RadComboBox runat="server" ID="CB" AllowCustomText="true" HighlightTemplatedItems="true" EnableViewState="false" CheckBoxes="true" EnableLoadOnDemand="true" OnItemsRequested="CB_ItemsRequested" ></telerik:RadComboBox>

Specifically, note that CheckBoxes is true.

In some cases, the combo box's  item's text may have HTML tags in them, but we don't want that HTML to be interpreted, and we're happy that RadComboBox automatically encodes the Item's name.  For example, the Item's text might be <img src=xxx onerror=alert(0)> , and of course we don't want that javascript to run. 

However, we have found a case where the text is not properly escaped, in which case the javascript does run and the alert popup shows.  The error is in RadComboBox.CheckBoxes.js, in the _checkedItemsTextsFitInputWidth function.  That function is passed the comma separated string of all the selected item's text.  This function wants to measure the width of the string, and so it creates a div off-screen, and then pushes the checkedItemTexts string into the div.  If the checkedItemTexts string contains any HTML tags that contain javascript, then that javascript is executed, which can be a XSS attack.

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