Latest build is in SL5? My SL4 project wont build anymore

5 posts, 0 answers
  1. EmGooser
    EmGooser avatar
    6 posts
    Member since:
    Aug 2012

    Posted 07 Sep 2012 Link to this post

    Having used Telerik in the past, I was attempting to put some of the telerik controls for my client into their project.  However, when I downloaded the lastest version "RadControls for Silverlight Q2 2012 SP1" (Build v.2012.2.725.1050 Trial) I am not able to build.

    The actual error I get in Visual Studio 2012 is this.

    Error 20 The tag 'RadDateTimePicker' does not exist in XML namespace ''. c:\Users\EmGooser\Documents\Visual Studio 2012\Projects\TestingApp\TestingApp\MainPage.xaml 10 10 TestingApp

    When I look at the output window of the compiler I see this...

    C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(1578,5): warning MSB3274: The primary reference "Telerik.Windows.Controls" could not be resolved because it was built against the "Silverlight,Version=v5.0" framework. This is a higher version than the currently targeted framework "Silverlight,Version=v4.0".

    So I go and look at your system requirements page for the silverlight controls here 

    It says that Silverlight 4.0.   So... what gives?

    If I can get this resolved I will be able to give a good use case on why we should buy the toolset.

    NOTE: Before anyone asks, No I can't convert this project to the 5.0 framework because doing so will cause me to have to refactor all of the service model and there was some serious changes in the framework from 4.0 to 5.0.  As in 600+ build errors serious.
  2. EmGooser
    EmGooser avatar
    6 posts
    Member since:
    Aug 2012

    Posted 07 Sep 2012 Link to this post

    Steps to reproduce

    1. Make a new Silverlight 4.0 project in Visual Studio 2012
    2. Add the "Telerik.Windows.Controls" and "Telerik.Windows.Controls.Input" references
    3. In MainPage.xaml

    <UserControl x:Class="TestingApp.MainPage"
                 xmlns:telerik="" mc:Ignorable="d"
        d:DesignHeight="300" d:DesignWidth="400">
        <Grid x:Name="LayoutRoot" Background="White">
            <telerik:RadDateTimePicker />

    4. build
  3. EmGooser
    EmGooser avatar
    6 posts
    Member since:
    Aug 2012

    Posted 11 Sep 2012 Link to this post

    I have looked for a previous release build link on the site in hopes to find a build that was still in the SL 4.0 framework.  Can anyone help me find it?  I really want to demo the controls to the UI team so I can get them on board with the toolset.
  4. Joel
    Joel avatar
    53 posts
    Member since:
    Sep 2013

    Posted 08 Jul 2014 Link to this post

    Is there a workaround on this?
  5. Yana
    Yana avatar
    4604 posts

    Posted 09 Jul 2014 Link to this post

    Hi Joel,

    We do not provide Silverlight 4 assemblies since Q3 2012 release of UI for Silverlight. You can check the following blog post for more details:

    Check out Telerik Analytics, the service which allows developers to discover app usage patterns, analyze user data, log exceptions, solve problems and profile application performance at run time. Watch the videos and start improving your app based on facts, not hunches.
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