Hi,

I am working on a project where I need two things to be satisfied:
1. The chart has to be plotted for real-time data where each series on the chart must be smoothly plotted without any synchronization issue.
2. The Observablecollection that contains the list of series to be plotted (which is used to set as datacontext) has to be dynamic, i.e., it must be possible to add/remove the series dynamically.

I'm able to achieve the above features separately but not together, i.e., On adding a new Series dynamically, the chart doesn't show continuous data plot for all the series, even after using Task/Dispatcher. Any suggestion on how should I proceed on this?
Thank you in advance.

Hello,

We are working on a WPF application. On some screens that seem very simple, load times are very long, even when there is no datas to bind.
I enclose you a basic example with a radGridView. This screen takes about 4 seconds to load on a PC windows 7 64, I5, 4GB RAM.

Can you enlighten us? We do something wrong? How can we improve the loading time?

Best regards.


in XAML :

<Window
x:Class="perfDG.CommandeRepartition"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
Title="CommandeRepartition"
Loaded="frmRepartition_Loaded"
WindowStartupLocation="CenterScreen"
MaxHeight="700"
x:Name="frmRepartition"
SizeToContent="WidthAndHeight">

<Grid>
   <Grid.RowDefinitions>
     <RowDefinition Height="35"></RowDefinition>
     <RowDefinition></RowDefinition>
     <RowDefinition Height="80"></RowDefinition>
   </Grid.RowDefinitions>

        
    <Grid Grid.Row="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1*"></ColumnDefinition>
<ColumnDefinition Width="Auto"></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Foreground="White" HorizontalAlignment="Right" VerticalAlignment="Center" Margin="0,0,10,0" Text="Regroupement"></TextBlock>
<ComboBox x:Name="cbbGroupement" Margin="2"
MinWidth="150"
Grid.Row="0" Grid.Column="1"
BorderBrush="Black" BorderThickness="1" Background="White"
ItemsSource="{Binding Path=LstItemGroupementRepartition}"
SelectedValuePath="Valeur"
DisplayMemberPath="Libelle"
SelectionChanged="cbbGroupement_SelectionChanged">
</ComboBox>
<Border Grid.Column="1" Margin="2" BorderThickness="1" BorderBrush="Black"></Border>
</Grid>

<!-- Grille -->

<!-- item source listRepartition is List<T>

        <telerik:RadGridView x:Name="dtaRepartition" Grid.Row="1" ItemsSource="{Binding listRepartition}" Margin="2,0,2,0"
AreRowDetailsFrozen="True"
AutoGenerateColumns="False"
CanUserDeleteRows="False"
CanUserFreezeColumns="False"
CanUserInsertRows="False"
CanUserReorderColumns="False"
CanUserResizeColumns="False"
CanUserResizeRows="False"
CanUserSortColumns="False"
CanUserSortGroups="False"
RowIndicatorVisibility="Collapsed"
ShowColumnHeaders="True"
GridLinesVisibility="Horizontal"
ShowGroupPanel="false"
CanUserSelect="False"
RowDetailsVisibilityMode="Collapsed"
EnableColumnVirtualization="False"
EnableRowVirtualization="False"
ShowGroupFooters="False"
ShowColumnFooters="True"
GroupRenderMode="Flat"
IsFilteringAllowed="False">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding libelleArticle}" Width="400"
UniqueName="libellearticle"
Header="Article" IsReadOnly="True" Focusable="False" Footer="Total"
ShowFieldFilters="False" ShowFilterButton="False" ShowDistinctFilters="False"
/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding delai}" IsVisible="False"
Header="Delai" IsReadOnly="True" Focusable="False"
UniqueName="delai"
DataFormatString="{} {0:dd/MM/yyyy}"
ShowFieldFilters="False" ShowFilterButton="False" ShowDistinctFilters="False"
/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding quantite}" Width="90"
UniqueName="quantite"
Header="Quantité" IsReadOnly="True" Focusable="False"
TextAlignment="Right"
ShowFieldFilters="False" ShowFilterButton="False" ShowDistinctFilters="False"
/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding montant}" Width="120"
UniqueName="montant"
Header="Montant" IsReadOnly="True" Focusable="False"
TextAlignment="Right"
ShowFieldFilters="False" ShowFilterButton="False" ShowDistinctFilters="False"
/>

</telerik:RadGridView.Columns>
</telerik:RadGridView>


<!-- Boutons -->
<Grid Grid.Row="2">
<StackPanel Orientation="Horizontal" HorizontalAlignment="Left">
<Button x:Name="btnRetour" Margin="10,5" Height="60" Width="80" Click="btnRetour_Click">
<StackPanel>
<TextBlock Text="Retour" ></TextBlock>
</StackPanel>
</Button>
</StackPanel>
</Grid>

</Grid>
</Window>

   
in CS :

// Loading data from a database
// form.datacontext = this

How can I make a RadGrid to always highlight the SelectedItem (or CurrentItem) in full color like in the screen-shot OK.png.

Why does the SelectedItem ist sometimes only have a border like in the other screen-shot (NotOK.png).

I want a behavior like in a ListBox where some item is always "active" (i.e. selected).

Hi,

I want to use the TreeListView to display a hierarchical list of 2 or 3 differents types of object. I want to display different columnHearder according with row is selected. I don't want to use Gridviews with rowdetails. I want to have the columnHearders of each rowType in a same position.

How can I achieve this ?

 
 I'm having problems loading an Arabic document into a RadRichTextBox -- the crux of the problem is that if you set the FlowDirection on the RadRichTextBox it puts the scroll bar on the left (where it should be) but it reverses the text. If one sets the FlowDirection to LeftToRight the text is correctly displayed (RTL and right aligned) but the scrollbar is on the right.

 Is this is a known problem or is the some way to load the control to make to correct this?

Thanks,
Scott

 Capture1.png shows a demo app that has a WebBrowser, RichTextBox and RadRichTextBox side by side, note that the text is the same in all controls, but the scrollbar is placed incorrectly on the RadRichTextBox (far right in the image).

 Capture2.png shows the same app with the FlowDirection set to RightToLife; obviously the text is reversed.

 Here's the guts of the code that loads the controls


 And here's the XAML


 

I need a vertical scale to be displayed next to an image that have a moving png image. I've used a Telerik Vertical Gauge and a Linear Scale but my client doesn't want to see the gauge borders. How can I customize the gauge to remove the borders without making the scale disappear? Visibility and opactiy makes everything invisible so that's not going to work! Thank you. Here's my xaml and images of what I need and what I have! I appreciate your help!

                    <telerik:RadVerticalLinearGauge Grid.Row="2"
                                                    Visibility="Visible" 
                                                    Opacity=".65" 
                                                    Foreground="LightBlue" 
                                                    Background="LightBlue"  
                                                    Margin="15,0,162,0" 
                                                    BorderBrush="LightBlue"  
                                                    BorderThickness = "0,0,0,0">
                        <telerik:VerticalLinearScale Max="{Binding MastScaleMax.Value}" 
                                                     MajorTickRelativeWidth="5" 
                                                     ClipToBounds="True" 
                                                     FontWeight="ExtraBold"  
                                                     Min="-10"  
                                                     MajorTicks="{Binding MastScaleMax.Value,Converter={StaticResource MyIncrementCalculatorConverter}}" 
                                                     MinorTicks="5" 
                                                     BorderBrush="LightBlue" BorderThickness="0,0,0,0" Margin="18,-20,15,0" Height="644" VerticalAlignment="Top">
                            <telerik:Marker x:Name="TopDriveMarker" Opacity="0" telerik:ScaleObject.RelativeWidth="0.1*" 
                                            telerik:ScaleObject.RelativeHeight="0.05*" Width="5" Height="5" 
                                            Value="{Binding ElevatorPosition.Value}" 
                                            telerik:ScaleObject.Location="OverCenter" Margin="0,0,0,0">
                            </telerik:Marker>
                        </telerik:VerticalLinearScale>
                    </telerik:RadVerticalLinearGauge>

Hi

I have the same problem as this person: StackOverflow question. If you have a RadGridView inside a TabControl, the grid view will lose its filtering and sorting options when you switch to another tab and back.

Details:

• .NET 4.0
• RadControls version:  2011.2.920.40
• The grid views are bound to ObservableCollections or ICollectionViewSource. The filtering is only performed by clicking on the filter button on the column header. No filtering is performed in code.
• Everything is implemented using the MVVM pattern.

Regards
Pierre-Andre

When we use the auto-layout functionality in our application our diagram ends up upside down. The code we are using for adding shapes and connectors is below. Any ideas on how to make the layout start with our start block on top and then layout downward. I tried added the End block after the start and that did not fix it. Are there any other layouts we can try?

Hi all,

I'm doing on RadGridView with a customized toggle button instead of using the default toggle button. I know it's coming with the ChildTableDefination and GridViewTableDefinition by default. So, since I'm using the customized toggle button, can I populate the child from my View Model once I clicked on the customized toggle button from parent? How could I link the toggle button once I clicked to the HierarchyChildTemplate? Thanks is advanced. Hope there's someone could help me.

Best Regards, 
Ng.

I am implementing a grid hierarchy view on my UI. I have used hierarchy child template for this and it has 3 levels layer A, layer B and layer C. Now when I click to expand layer A, it ends up expanding layer B as well.

Is there any way to stop this? I do not want to expand layer B by default. Please suggest few ideas.