Tye type of namespace name 'Windows' does not exist ...

[Jesper]

I'm trying to get myself introduced into using the RadChartView here and I'm working from your demos on the matter but when I try building I get this compiler error: 

message: The type or namespace name 'Windows' does not exist in the namespace 'Spike.Telerik' (are you missing an assembly reference?)
file: GvsDefectsChartControl.xaml 19 26
project: Spike.Telerik.RadChartView

Apparently there's an assembly that needs to be referenced but the message isn't gibing me much of a hint on which one.
Also, on the whole, I think your demos are lacking in this area. None of the XAML examples I've seen includes the namespace declarations, just the rendered tags. Those all include custom (Telerik) namespaces. Fortunately I have Jetbrains Resharper to help me set up the correct namespace declarations but I'm still stuck with the above error.

This is my complete XAML:

<UserControl x:Class="Spike.Telerik.RadChartView.MyTestChartViewControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:chart="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Chart"
             xmlns:chartView="http://schemas.telerik.com/2008/xaml/presentation"
             mc:Ignorable="d"
             xmlns:GVS="clr-namespace:Spike.RADChart.GVS"
             d:DesignHeight="300" d:DesignWidth="300">

    <UserControl.Resources>
        <GVS:MyViewModel x:Key="_testVM"/>
    </UserControl.Resources>

    <Grid DataContext="{StaticResource _testVM}">

        <chart:RadCartesianChart >

            <chart:RadCartesianChart.HorizontalAxis>
                <chartView:DateTimeCategoricalAxis LabelRotationAngle="50" LabelFormat="HH:mm"/>
            </chart:RadCartesianChart.HorizontalAxis>

            <chart:RadCartesianChart.VerticalAxis>
                <chartView:LinearAxis />
            </chart:RadCartesianChart.VerticalAxis>

            <chart:RadCartesianChart.Series>
                <chartView:SplineSeries
                    ItemsSource="{Binding Path=Data}"
                    CategoryBinding="Time"
                    ValueBinding="Value"
                    />

            </chart:RadCartesianChart.Series>

        </chart:RadCartesianChart>

    </Grid>
</UserControl>

I would appreciate any help.
Thanks

[Jesper]

Never mind. Seems the problem "self healed".

[Anton]

I got the same problem.

 

Works:

<telerik:RadCartesianChart>
</telerik:RadCartesianChart>

 

Does not work:

<telerik:RadCartesianChart x:Name="Test">
</telerik:RadCartesianChart>

 

> The type or namespace name 'Windows' does not exist in the namespace MyApps.Charts.Telerik

 

I had to rename MyApp.Charts.Telerik namespace to fix the error.

[Dinko | Tech Support Engineer]

Hi Anton,

This error appears in a scenario when there is a conflict between our namespace and namespace which you have used. In your post, I can see that you have used "Telerik" string in your namespace. I would recommend you to avoid using our namespace in your namespaces in your application. Instead, you can consider creating custom namespaces so such errors don't appear.

Regards,
Dinko
Progress Telerik