Questions on UI for WPF Forum

25,612 questions

5 answers

187 views

ComboBox not changing its style when programatically Focused

Hi again. I have the following problem: If in the page's Loaded event I set the focus on one of my RadComboBoxes, even though it becomes the active control and I can browse through the elemnts with the Up and Down keys, it doesn't change the way it looks, so there's no way for the user to know that the control is active.

Now if I, at runtime, use the Tab key to select it, then I get the different style. Is there anything besides (or instead of) the call to the Focus method on the page's Loaded event I should do to get the control to appear different when it's focused?

PS: I'm not setting any specific style to the control, I'm just using whatever default behaviour it's got (usually, an orange border around it shows that it's the active control).

Thanks a lot. You continuous help is very appreciated.

ComboBox

answered on 11 Apr 2013

6 answers

203 views

HorizontalStackedBarSeriesDefinition how to display data

Hi!

I have a simple task to be done! I have to display a chart using <RadChart> (like one in attachment). It is a simple horizontal bar (I guess with two series STOPPED, ACTIVE).

The chart should display time o X axis and tho series of graph (red for STOPPED, green for ACTIVE). Assumig I can use the DLYChartPoint structure. Or not?!

I have problems displaying the data, so a little help would be appreciate.

Thanks in advice!

My code:
C#:

public class DLYChartPoint : LPDEntityStatus
	{
		#region Private
		string label;
		double value;
	        long uniqueId;
 
		#endregion

	// other class structures
}

------------------------------------------------------------------------------------------

public ObservableCollection<DLYChartPoint> TimeLineChart

WPF:

<telerik:RadChart x:Name="timeLineChart" ItemsSource="{Binding TimeLineChart, Mode=TwoWay}">
    <telerik:RadChart.DefaultView>
        <telerik:ChartDefaultView>
            <telerik:ChartDefaultView.ChartLegend>
                <telerik:ChartLegend Visibility="Collapsed" />
            </telerik:ChartDefaultView.ChartLegend>
        </telerik:ChartDefaultView>
    </telerik:RadChart.DefaultView>
    <telerik:RadChart.SeriesMappings>
		<telerik:SeriesMapping>
			<telerik:SeriesMapping.SeriesDefinition>
                <telerik:HorizontalStackedBarSeriesDefinition ></telerik:HorizontalStackedBarSeriesDefinition>
			</telerik:SeriesMapping.SeriesDefinition>
            <telerik:SeriesMapping.ItemMappings>
                <telerik:ItemMapping DataPointMember="Label" FieldName="Value"></telerik:ItemMapping>
                <telerik:ItemMapping DataPointMember="YValue" FieldName="Value"></telerik:ItemMapping>
                <telerik:ItemMapping DataPointMember="XCategory" FieldName="Label"/>
            </telerik:SeriesMapping.ItemMappings>
		</telerik:SeriesMapping>
	</telerik:RadChart.SeriesMappings>
</telerik:RadChart>

Chart

answered on 11 Apr 2013

1 answer

121 views

Toolbar Button size changed after upgrading to 2013.1.403.40 (Q1 2013 SP1)

After upgrading to Q1 2013 SP1 (2013.1.403.40) my RadButtons inside the RadToolBar became huge and I cannot control their size with Height and Width properties. Please take a look at the attached before and after screen shots.

Here is my XAML:

<t:RadToolBar DockPanel.Dock="Top" Margin="0" Width="{Binding ElementName=DockPanelMain, Path=ActualWidth}" 
  IsTabStop="False" GripVisibility="Collapsed" OverflowButtonVisibility="Collapsed">
  <t:RadButton>
    <Image Stretch="None" Source="Images/Image32.png" />
  </t:RadButton>
  ...

</t:RadToolBar>

I tried removing Width="{Binding ElementName=DockPanelMain, Path=ActualWidth}" but that didn't help. I also tried adding Width="36" Height="36" to RadButton and Width="32" Height="32" to the Image but that did not help either...

What do I need to do to get my buttons to normal size again?

Thanks...

ToolBar

answered on 10 Apr 2013

0 answers

141 views

Vertical borders between only some columns

Is there a way to create a border between only certain columns without using a template for the cells?

I have a GridView in which we want to place a vertical border on some columns. I can do this by adding a border to the cell template, but this seems to slow down the grid significant. I do not know why it becomes slower but once I put in a template it gets slow so I wonder if it is possible to add a border without using a template or some other way.

GridView

asked on 10 Apr 2013

1 answer

65 views

Show just a specific value on Y-axis

I need to build a chart that shows only a specific value and tick on Y-axis.

E.g. I want to show only the Y corresponding to the plt point in the image at the link below. I don't want to show ther others Y values at Y-axis.
Chart example

Does anybody know if it's possible??
Does anybody know how to do that?

Thx in advance!

Chart

answered on 10 Apr 2013

1 answer

188 views

Error in creating RAD Gauge

Hi Telerik team,

Please help me on one issue with Telerik Controls.

When I create a simple Rad Gauge control in my project I get a namespace error. The project is done in Visual studio 2008. I dont have much idea about rad Gauge creation. Please explain about this error and how to solve this.

The error is "The tag 'RadRadialGauge' does not exist in XML namespace 'http://schemas.telerik.com/2008/xaml/presentation'."

I mention below the code that implemented in the project for the control creation.
----------------------------------------------------------------------------------------------------------
<Window x:Class="Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation">
<Grid>
<telerik:RadRadialGauge x:Name="radialGauge" Width="300" Height="300">
<telerik:RadialScale Min="1"
Max="12">
<telerik:RadialScale.Indicators>
<telerik:Needle />
<telerik:Pinpoint/>
</telerik:RadialScale.Indicators>
</telerik:RadialScale>
</telerik:RadRadialGauge>
</Grid>
</Window>
------------------------------------------------------------------------------------------------------------

Gauges

answered on 10 Apr 2013

1 answer

77 views

InitialPosition="FloatingDockable" - Object reference not set to an instance of an object

Hi, using latest WPF controls (2013.1.220.40), when I paste in an example directly from the examples demo (First look for the Docking panel), I get the following error:

Object reference not set to an instance of an object.

at Telerik.Windows.Controls.InternalWindow.PopupWindowHost.PopupHostManagerBase.GetManager(DependencyObject obj) in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Navigation\Window\InternalWindow\PopupWindowHost.cs:line 308

at Telerik.Windows.Controls.InternalWindow.SinglePopupWindowHost.GetHostManager() in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Navigation\Window\InternalWindow\SinglePopupWindowHost.cs:line 22

at Telerik.Windows.Controls.InternalWindow.PopupWindowHost.Open(Boolean isModal) in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Navigation\Window\InternalWindow\PopupWindowHost.cs:line 77

at Telerik.Windows.Controls.WindowBase.ShowWindow(Boolean isModal) in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Navigation\Window\WindowBase.cs:line 891

at Telerik.Windows.Controls.Docking.ToolWindow.Open() in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Docking\Docking\Parts\ToolWindow.cs:line 121

at Telerik.Windows.Controls.RadDocking.OpenInToolWindow(RadSplitContainer container) in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Docking\Docking\Docking\RadDocking.cs:line 797

at Telerik.Windows.Controls.RadDocking.InitializeSplitContainer(RadSplitContainer container) in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Docking\Docking\Docking\RadDocking.cs:line 1325

at Telerik.Windows.Controls.RadDocking.OnApplyTemplate() in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Docking\Docking\Docking\RadDocking.cs:line 180

at System.Windows.FrameworkElement.ApplyTemplate()

at Microsoft.Expression.Platform.WPF.WpfViewNodeManager.EnsureElementInDictionary(Object root, ViewNode knownAncestor)

If I change the Initial position of the control to DockLeft (or anything other than floating), the demo works.

Is there a bug in the latest dlls ?

thanks!

Docking

answered on 10 Apr 2013

5 answers

180 views

"Styling a Cell" & "INotifyDataErrorInfo" throws InvalidOperationException

Hello Forum

I was following your Tutorial about "Styling a Cell" (http://www.telerik.com/help/wpf/gridview-styling-cell.html). My ViewModel implements INotifyDataErrorInfo and exposes Errors through it.

When i am hovering the mouse over the red triangle to see the error tool tip, i get the following Exception: 'xform' name cannot be found in the name scope of 'System.Windows.Controls.Grid'.

Do you have any suggestions?

Thanks,
Michael

Here is my Code:
...by the way: i have prepared a sample solution, but i can't attach it to the post.

MainWindow.xaml:

<Window x:Class="TelerikGridViewCellStyle.MainWindow"

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"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:telerikGridViewCellStyle="clr-namespace:TelerikGridViewCellStyle" mc:Ignorable="d"

Title="MainWindow" Height="350" Width="525" d:DataContext="{d:DesignInstance telerikGridViewCellStyle:ViewModel}">

<Window.Resources>

<Style TargetType="{x:Type telerik:GridViewCell}">

<Setter Property="Template">

<Setter.Value>

<ControlTemplate TargetType="{x:Type telerik:GridViewCell}">

<Grid>

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="SelectionStates">

<VisualState x:Name="Unselected"/>

<VisualState x:Name="Selected">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Background_Selected">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

<VisualStateGroup x:Name="CommonStates">

<VisualState x:Name="Normal"/>

<VisualState x:Name="Current">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Background_Current">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="MouseOver">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Background_Over">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

<VisualStateGroup x:Name="EditingStates">

<VisualState x:Name="Edited">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Margin" Storyboard.TargetName="PART_ContentPresenter">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Thickness>0</Thickness>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="VerticalAlignment" Storyboard.TargetName="PART_ContentPresenter">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<VerticalAlignment>Stretch</VerticalAlignment>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="PART_CellBorder">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<SolidColorBrush Color="White"/>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="Display"/>

</VisualStateGroup>

<VisualStateGroup x:Name="DisabledStates">

<VisualState x:Name="Enabled"/>

<VisualState x:Name="Disabled">

<Storyboard>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="PART_CellBorder">

<DiscreteDoubleKeyFrame KeyTime="0" Value="0.4"/>

</DoubleAnimationUsingKeyFrames>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="PART_ContentPresenter">

<DiscreteDoubleKeyFrame KeyTime="0" Value="0.7"/>

</DoubleAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Background_Disabled">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

<VisualStateGroup x:Name="ValueStates">

<VisualState x:Name="CellValid"/>

<VisualState x:Name="CellInvalid">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Background_Invalid">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="InvalidUnfocused">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Background_Invalid_Unfocused">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<Border x:Name="PART_CellBorder" BorderBrush="{TemplateBinding VerticalGridLinesBrush}" Background="{Binding Background, RelativeSource={RelativeSource TemplatedParent}}" Margin="1,0,0,0">

<Border.BorderThickness>

<Binding ConverterParameter="Right" Path="VerticalGridLinesWidth" RelativeSource="{RelativeSource TemplatedParent}">

<Binding.Converter>

<telerik:GridLineWidthToThicknessConverter/>

</Binding.Converter>

</Binding>

</Border.BorderThickness>

</Border>

<Border x:Name="Background_Over" BorderBrush="#FFFFC92B" BorderThickness="1" Grid.ColumnSpan="2" Grid.Column="2" CornerRadius="1" Margin="1,1,2,2" Visibility="Collapsed">

<Border BorderBrush="White" BorderThickness="1">

<Border.Background>

<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FFFFFBA3" Offset="1"/>

<GradientStop Color="#FFFFFBDA" Offset="0"/>

</LinearGradientBrush>

</Border.Background>

</Border>

<Border x:Name="Background_Selected" BorderBrush="#FFFFC92B" BorderThickness="1" Grid.ColumnSpan="2" Grid.Column="2" CornerRadius="1" Margin="1,1,2,2" Visibility="Collapsed">

<Border BorderBrush="White" BorderThickness="1">

<Border.Background>

<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FFFCE79F" Offset="1"/>

<GradientStop Color="#FFFDD3A8"/>

</LinearGradientBrush>

</Border.Background>

</Border>

<Border x:Name="Background_Current" BorderBrush="#FF848484" BorderThickness="1" Grid.ColumnSpan="2" Grid.Column="2" CornerRadius="1" Margin="1,1,2,2" Visibility="Collapsed"/>

<Border x:Name="Background_Invalid" BorderBrush="#FFDB000C" BorderThickness="1" Background="White" Grid.ColumnSpan="2" Grid.Column="2" CornerRadius="1" Margin="1,1,2,2" Visibility="Collapsed">

<Border.ToolTip>

<ToolTip x:Name="validationTooltip" Content="{TemplateBinding Errors}" Placement="Right">

<ToolTip.Template>

<ControlTemplate TargetType="{x:Type ToolTip}">

<Grid x:Name="Root" Margin="5,0" Opacity="0" RenderTransformOrigin="0,0">

<Grid.RenderTransform>

<TranslateTransform X="-25"/>

</Grid.RenderTransform>

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="OpenStates">

<VisualStateGroup.Transitions>

<VisualTransition From="{x:Null}" GeneratedDuration="0" GeneratedEasingFunction="{x:Null}" Storyboard="{x:Null}" To="{x:Null}"/>

<VisualTransition From="{x:Null}" GeneratedDuration="0:0:0.2" GeneratedEasingFunction="{x:Null}" To="Open">

<Storyboard>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="X" Storyboard.TargetName="xform">

<SplineDoubleKeyFrame KeyTime="0:0:0.2" Value="0"/>

</DoubleAnimationUsingKeyFrames>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Root">

<SplineDoubleKeyFrame KeyTime="0:0:0.2" Value="1"/>

</DoubleAnimationUsingKeyFrames>

</Storyboard>

</VisualTransition>

</VisualStateGroup.Transitions>

<VisualState x:Name="Closed">

<Storyboard>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Root">

<SplineDoubleKeyFrame KeyTime="0" Value="0"/>

</DoubleAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="Open">

<Storyboard>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="X" Storyboard.TargetName="xform">

<SplineDoubleKeyFrame KeyTime="0" Value="0"/>

</DoubleAnimationUsingKeyFrames>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Root">

<SplineDoubleKeyFrame KeyTime="0" Value="1"/>

</DoubleAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<Border Background="#052A2E31" CornerRadius="5" Margin="4,4,-4,-4"/>

<Border Background="#152A2E31" CornerRadius="4" Margin="3,3,-3,-3"/>

<Border Background="#252A2E31" CornerRadius="3" Margin="2,2,-2,-2"/>

<Border Background="#352A2E31" CornerRadius="2" Margin="1,1,-1,-1"/>

<Border Background="#FFDC000C" CornerRadius="2"/>

<Border CornerRadius="2">

<ItemsControl>

<ItemsControl.ItemsPanel>

<ItemsPanelTemplate>

<StackPanel IsItemsHost="True"/>

</ItemsPanelTemplate>

</ItemsControl.ItemsPanel>

<ItemsControl.ItemTemplate>

<DataTemplate>

<TextBlock Foreground="White" MaxWidth="250" Margin="8,4" TextWrapping="Wrap" Text="{Binding}"/>

</DataTemplate>

</ItemsControl.ItemTemplate>

</ItemsControl>

</Border>

</Grid>

</ControlTemplate>

</ToolTip.Template>

</ToolTip>

</Border.ToolTip>

<Grid Background="Transparent" HorizontalAlignment="Right" Height="12" Margin="1,-4,-4,0" VerticalAlignment="Top" Width="12">

<Path Data="M1,0L6,0A2,2,90,0,1,8,2L8,7z" Fill="#FFDB000C" Margin="1,3,0,0"/>

<Path Data="M0,0L2,0 8,6 8,8" Fill="White" Margin="1,3,0,0"/>

</Grid>

</Border>

<Border x:Name="Background_Invalid_Unfocused" BorderBrush="#FFCE7D7D" BorderThickness="1" Grid.ColumnSpan="2" Grid.Column="2" CornerRadius="1" Margin="1,1,1,2" Opacity="1" Visibility="Collapsed">

<Border BorderThickness="1">

<Border.BorderBrush>

<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FFEBF4FD"/>

<GradientStop Color="#FFDBEAFD" Offset="1"/>

</LinearGradientBrush>

</Border.BorderBrush>

<Border.Background>

<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FFFCDCDC"/>

<GradientStop Color="#FFFCC1C1" Offset="1"/>

</LinearGradientBrush>

</Border.Background>

</Border>

<Border x:Name="Background_Disabled" BorderBrush="#FFF8F8F8" BorderThickness="1" Background="#FFE0E0E0" Grid.ColumnSpan="2" Grid.Column="2" Margin="0,0,1,1" Visibility="Collapsed"/>

<ContentPresenter x:Name="PART_ContentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>

</Grid>

</ControlTemplate>

</Setter.Value>

</Setter>

<Setter Property="Padding" Value="5,0,3,0"/>

<Setter Property="BorderBrush" Value="#FFCBCBCB"/>

<Setter Property="BorderThickness" Value="0,0,1,0"/>

<Setter Property="VerticalContentAlignment" Value="Center"/>

<Setter Property="HorizontalContentAlignment" Value="Stretch"/>

<Setter Property="Background" Value="Transparent"/>

<Setter Property="SnapsToDevicePixels" Value="True"/>

<Setter Property="FocusVisualStyle">

<Setter.Value>

<Style>

<Setter Property="Control.Template">

<Setter.Value>

<ControlTemplate>

<Border BorderBrush="#FF848484" BorderThickness="1" CornerRadius="1" Margin="1,1,2,2"/>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

</Setter.Value>

</Setter>

</Style>

</Window.Resources>

<Grid>

<telerik:RadGridView ItemsSource="{Binding Items}" />

</Grid>

</Window>

MainWindow.xaml.cs:

using System.Windows;

namespace TelerikGridViewCellStyle

{

    /// <summary>

    /// Interaction logic for MainWindow.xaml

    /// </summary>

    public partial class MainWindow : Window

    {

        public MainWindow()

        {

            InitializeComponent();

            DataContext = new ViewModel();

        }

    }

}

ViewModel.cs:

using System;

using System.Collections;

using System.Collections.ObjectModel;

using System.ComponentModel;

namespace TelerikGridViewCellStyle

{

public class ViewModel

{

public ObservableCollection<DataItem> Items { get; set; }

public ViewModel()

{

Items = new ObservableCollection<DataItem>();

Items.Add(new DataItem {A = "ABC", B = "hihi"});

Items.Add(new DataItem {A = "DEF", B = "hihi"});

Items.Add(new DataItem {A = "GHI", B = "hihi"});

}

public class DataItem : INotifyDataErrorInfo

{

public string A { get; set; }

public string B { get; set; }

public IEnumerable GetErrors(string propertyName)

{

return "Error";

}

public bool HasErrors { get { return true; } }

public event EventHandler<DataErrorsChangedEventArgs> ErrorsChanged;

}

GridView

answered on 10 Apr 2013

4 answers

176 views

Update removed Implicit Theme(2013.1.403.45)

I installed the WPF SP1 update this morning to my application and it removed my Implicit Theme. Did I do something wrong? Should I have chosen the No-XAML version during the Upgrade? How do I re-add my Theme correctly? I found the binaries for that theme but now it crashes when I start Debugging.

EDIT:

Never mind, I still don't understand why it removed my Theme dll references but I was able to re add my implicit theme.

Installer and Visual Studio Extensions

answered on 10 Apr 2013

2 answers

166 views

Grouping on X-Axis

If I have an object that looks like this:
Object
customerid
value
date

I now want to have the X-axis grouped on the customerid (the same id occurs more than once). This I can do with the CategoryBinding. I'm using a ChartDataSource as the ItemSource for the Series.
Now all the values of the customerId will be displayed next to each other. What I would want to do is to only show one bar for each of the customerId and the value to use an aggregate function (e.g. sum, mean, min, max). The best way I have been able to do this is with the SamplingThreshold. But this is not correct as it could generate multiple bars for one customerId while another one is not displayed at all as the number of occurrences differ.
I am able to show the aggregated value grouped on date using SamplingUnit and SampleInterval. But I also want to be able to group on other types than just dates.

I am doing this all in code-behind.

I might have missed something completely or be doing something wrong but I have not found a way to achieve it.
How should I go about doing this?

ChartView

answered on 10 Apr 2013

Top users last month