Questions on UI for WPF Forum

1 answer

132 views

How to consume data from a ms access database using a chart

Hi I am having problems trying to bind the radChart to a ms access database. Does anyone have a solution?. Or just a short tutorial. I see none in this forum at all.

Chart

answered on 06 May 2010

1 answer

93 views

Error during creation of WPF Project

Hi,

I try to create a Radcontrol WPF Project, but an error occur during creation.
You can see the detail of the error in the attached file.

Conf:
VS 2010 RTM
RadControl for WPF 2010.1.422

Kind regards.

General Discussions

answered on 06 May 2010

1 answer

79 views

sample for line graph with 80K data points

Hi,

I am trying to draw a line graph with two data series with each data series with about 80000 data points - that performs well? I find that after about 1000 data points it is a hog.

Is there anyway to create a line graph with 80K datapoints that is fairly quick? I don't need any frills on the chart - simple vanilla chart would be great.

thanks in advance,

Jas

Chart

answered on 06 May 2010

1 answer

97 views

Grouping and "not-allowed-sign"

1. I have a column in my Grid. It is not allowed to use grouping for this column (IsGroupable="False" ). When I try to drag-drop the column-title to the GroupPanel it just does not do anything. And that is what is expected, but the"not-allowed-image" did not show up.
2. Another column in the Grid is allowed to use grouping. When I drag-drop the title to the GroupPanel everything works fine.
But... when I try to drag-drop the title back again, this also works, but now the "not-allowed-sign" shows up.

Should this not be the other way around: the "not-allowed-sign" shows when I try to group a column with IsGroupable="False"...?

GridView

answered on 06 May 2010

1 answer

177 views

Validating / Styling

Hi

I have a small problem. When I validate a TextBoxes Value and than giving the User a visual feedback everything works prefectly fine.

When I do this with a RadComboBox, the only thing that works is the validation part. But I don't get any visual feedback. Here is the XAML part in my App.xaml

    
            <Application x:Class="CDM.App" 
        
                         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:telerikInput="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Input" 
        
                         > 
        
                <Application.Resources> 
        
                <Storyboard x:Key="FlashError"> 
        
                        <ObjectAnimationUsingKeyFrames BeginTime="00:00:00"  
        
                                                   Storyboard.TargetProperty="(UIElement.Visibility)"> 
        
                            <DiscreteObjectKeyFrame KeyTime="00:00:00" Value="{x:Static Visibility.Visible}"/> 
        
                            <DiscreteObjectKeyFrame KeyTime="00:00:05" Value="{x:Static Visibility.Hidden}"/> 
        
                        </ObjectAnimationUsingKeyFrames> 
        
                    </Storyboard> 
        
                <Style x:Key="myErrorTemplate" TargetType="Control"> 
        
                    <Setter Property="Validation.ErrorTemplate"> 
        
                        <Setter.Value> 
        
                            <ControlTemplate> 
        
                                <StackPanel Orientation="Vertical"> 
        
                                    <Border BorderBrush="Red" BorderThickness="1"> 
        
                                        <AdornedElementPlaceholder Name="mycontrol"> 
        
                                            <Label Foreground="White" Background="Red"  
        
                                                       Content="{Binding ElementName=mycontrol,  
        
                                                                 Path=AdornedElement.(Validation.Errors)[0].ErrorContent}"> 
        
                                                    <Label.Triggers> 
        
                                                        <EventTrigger RoutedEvent="FrameworkElement.Loaded"> 
        
                                                            <BeginStoryboard Storyboard="{StaticResource FlashError}" /> 
        
                                                        </EventTrigger> 
        
                                                    </Label.Triggers> 
        
                                                </Label> 
        
                                        </AdornedElementPlaceholder> 
        
                                    </Border> 
        
                                    <!--<Label Foreground="White" Background="Red"  
        
                                                       Content="{Binding ElementName=mycontrol,  
        
                                                                 Path=AdornedElement.(Validation.Errors)[0].ErrorContent}"> 
        
                                    </Label>--> 
        
                                </StackPanel> 
        
                            </ControlTemplate> 
        
                        </Setter.Value> 
        
                    </Setter> 
        
                    <Style.Triggers> 
        
                        <Trigger Property="Validation.HasError" Value="true"> 
        
                            <Setter Property="ToolTip"  
        
                                        Value="{Binding  
        
                                                RelativeSource={x:Static RelativeSource.Self}, 
        
                                                Path=(Validation.Errors)[0].ErrorContent}" /> 
        
                        </Trigger> 
        
                    </Style.Triggers> 
        
                </Style> 
        
                  <Style TargetType="TextBox" BasedOn="{StaticResource myErrorTemplate}" /> 
        
                <Style TargetType="CheckBox" BasedOn="{StaticResource myErrorTemplate}" /> 
        
                    <Style TargetType="telerik:RadComboBox" BasedOn="{StaticResource myErrorTemplate}" /> 
        
                </Application.Resources> 
        
            </Application>

And here the the C# Part for Validation. Allthough I am convincied that the validation works. Tested it several times.

    
                public Platten() 
        
                    { 
        
                        this.preisReference.AssociationChanged += new CollectionChangeEventHandler(preisReference_AssociationChanged); 
        
                        this.AddError("preis", "Preiscode fehlt!"); 
        
                    } 
        
                    void preisReference_AssociationChanged(object sender, CollectionChangeEventArgs e) 
        
                    { 
        
                        if (e.Action == CollectionChangeAction.Remove) 
        
                        { 
        
                            OnPropertyChanging("preis"); 
        
                        } 
        
                        else 
        
                        { 
        
                            if (e.Action == CollectionChangeAction.Add) 
        
                            { 
        
                                this.RemoveError("preis"); 
        
                            } 
        
                            OnPropertyChanged("preis"); 
        
                        } 
        
                    } 
        
                    #region IDataErrorInfo Members 
        
                    private Dictionary<string, string> m_validationErrors = new Dictionary<string, string>(); 
        
                    private void AddError(string columnName, string msg) 
        
                    { 
        
                        if (!m_validationErrors.ContainsKey(columnName)) 
        
                        { 
        
                            m_validationErrors.Add(columnName, msg); 
        
                        } 
        
                    } 
        
                    private void RemoveError(string columnName) 
        
                    { 
        
                        if (m_validationErrors.ContainsKey(columnName)) 
        
                        { 
        
                            m_validationErrors.Remove(columnName); 
        
                        } 
        
                    } 
        
                    public bool HasErrors 
        
                    { 
        
                        get { return m_validationErrors.Count > 0; } 
        
                    } 
        
                    public string Error 
        
                    { 
        
                        get 
        
                        { 
        
                            if (m_validationErrors.Count > 0) 
        
                            { 
        
                                return "Customer data is invalid"; 
        
                            } 
        
                            else 
        
                            { 
        
                                return null; 
        
                            } 
        
                        } 
        
                    } 
        
                    public string this[string columnName] 
        
                    { 
        
                        get 
        
                        { 
        
                            if (m_validationErrors.ContainsKey(columnName)) 
        
                            { 
        
                                return m_validationErrors[columnName]; 
        
                            } 
        
                            else return null; 
        
                        } 
        
                    } 
        
                    #endregion

Thanks for your help.

ComboBox

answered on 06 May 2010

2 answers

136 views

RadTreeView(WPF) - Reaching Tag Property

Hi,
I added items to a treeview programmatically(with two for loop) and set the tag property to a value for each of an Child item. But there is a problem.

RadTreeViewItem rti;

for (int i = 0; i < ParentCount; i++)

{

rti =

new RadTreeViewItem();

rti.Header = Parent[i].Name;

for (int j = 0; j < ChildCount; j++)

{

rti.Items.Add(Child[j].Name);

rti.Tag = Child[j].Number);

}

MyRadTreeView.Items.Add(rti); //MyRadTreeView is declared at XAML code.

}

I want to reach rti's Tag property from any of an event(Selected, SelectionChange...), but none of these events give me the Tag property's value. The Tag's value comes with null.
How can I achieve this issue?

TreeView

answered on 06 May 2010

1 answer

140 views

Resize the width of the outlookbar

I was wondering how you would allow the user to resize the width of the Outlook Bar at runtime. I am playing with the trial version of the controls and I did not see the ability to resize the outlook bar width once it is on the screen. Do you need to pair this control with another Telerik control to get this functionality? I basically want to set an initial width and give the user the ability to resize. Please let me know if you have an example.

Thanks,

Joel

OutlookBar

answered on 06 May 2010

5 answers

73 views

GridView and .net3.0

Hi ..

does GridView control works with .net 3.0, I know the demo requires .net3.5 but can we use the conrol with application that uses .net 3.0 not 3.5

Thanks
Wisam

GridView

answered on 06 May 2010

7 answers

471 views

Root node expand problem

Hi everyone. I have problems on expanding the root node of the treeview at start. I do not use data binding and I have about 4 hierarhical levels. In code at runtime I call the ExpandAll() for the level 0 nodes but they do not expand. If I expand the level 0 nodes afterwards in the UI I can see that all other levels below are expanded.

TreeView

answered on 06 May 2010

4 answers

242 views

Strange behavior of button in TabItem HeaderTemplate

Hello.
I'm using Q1 2010 for WPF.

I have this following simple sample:

    
            <Window x:Class="sample.Window1" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                xmlns:telNavigationControls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation" 
        
                xmlns:telControlsControls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls" 
        
                xmlns:sample="clr-namespace:sample" 
        
                Title="Sample Window" Height="300" Width="300"> 
        
                <Window.Resources> 
        
                    <Style x:Key="TelerikTabItemContainerStyle" TargetType="{x:Type telNavigationControls:RadTabItem}"> 
        
                        <Setter Property="HeaderTemplate"> 
        
                            <Setter.Value> 
        
                                <DataTemplate> 
        
                                    <Button x:Name="closeButton" Content="Test Button" Height="25" sample:RoutedEventHelper.EnableRoutedClick="True"/> 
        
                                </DataTemplate> 
        
                            </Setter.Value> 
        
                        </Setter> 
        
                    </Style> 
        
                </Window.Resources> 
        
                <Grid> 
        
                    <telNavigationControls:RadTabControl x:Name="mainTabControl" ItemContainerStyle="{StaticResource TelerikTabItemContainerStyle}" > 
        
                        <telNavigationControls:RadTabItem > 
        
                            <telNavigationControls:RadTabItem.Content> 
        
                                <Button HorizontalAlignment="Center" VerticalAlignment="Center" Content="Test" IsDefault="True" /> 
        
                            </telNavigationControls:RadTabItem.Content> 
        
                        </telNavigationControls:RadTabItem> 
        
                    </telNavigationControls:RadTabControl> 
        
                </Grid> 
        
            </Window>

As you can see, there is one RadTabControl with one RadTabItem. I've modified RadTabItem header through ItemContainerStyle. There is only one button in HeaderTemplate. I've used RoutedEventHandler class for allowing the button's click events to be catched.
Here is the code:

    
            using System; 
        
            using System.Collections.Generic; 
        
            using System.Linq; 
        
            using System.Text; 
        
            using System.Windows; 
        
            using System.Windows.Controls; 
        
            using Telerik.Windows; 
        
            using Telerik.Windows.Controls; 
        
            namespace sample 
        
            { 
        
                class RoutedEventHelper 
        
                { 
        
                    // TAB CLOSE BUTTON EVENT 
        
                    public static readonly RoutedEvent TabCloseButtonPressedEvent = EventManager.RegisterRoutedEvent( 
        
                        "TabCloseButtonPressed", 
        
                        RoutingStrategy.Bubble, 
        
                        typeof(RoutedEventHandler), 
        
                        typeof(RoutedEventHelper)); 
        
                    // DEPENDENCY PROPERTY FOR TAB ITEM HEADER BUTTON 
        
                    public static readonly DependencyProperty EnableRoutedClickProperty = DependencyProperty.RegisterAttached( 
        
                       "EnableRoutedClick", 
        
                       typeof(bool), 
        
                       typeof(RoutedEventHelper), 
        
                       new PropertyMetadata(OnEnableRoutedClickChanged)); 
        
                    // Add an attached property 
        
                    public static bool GetEnableRoutedClick(DependencyObject obj) 
        
                    { 
        
                        return (bool)obj.GetValue(EnableRoutedClickProperty); 
        
                    } 
        
                    public static void SetEnableRoutedClick(DependencyObject obj, bool value) 
        
                    { 
        
                        obj.SetValue(EnableRoutedClickProperty, value); 
        
                    } 
        
                    // TAB EVENT HANDLER 
        
                    private static void OnEnableRoutedClickChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e) 
        
                    { 
        
                        var button = sender as Button; 
        
                        if (button != null) 
        
                            button.Click += CloseButton_Click; 
        
                    } 
        
                    private static void CloseButton_Click(object sender, RoutedEventArgs e) 
        
                    { 
        
                        var button = sender as Button; 
        
                        if (button == null) return; 
        
                        button.RaiseEvent(new RoutedEventArgs(TabCloseButtonPressedEvent, button)); 
        
                    } 
        
                } 
        
            }

Everything works fine with one exception. If I put another Button as RadTabItem Content (as you can see in the above xaml example) and I set property of this button "IsDefault = true", the click events from the first button in RadTabItem header are not fired.
Is this behavior correct ?

I have also second question:
Imagine almost the same situation as in the previous example. I've RadTabItem with modified HeaderTemplate with one button in it. I've no buttons in the RadTabItem Content, so when I click on Button in my RadTabItem header, the click event is fired correctly.
Let's continue. Now I've got for example two RadTabItems (with the same HeaderTemplate) in one RadTabControl. The first RadTabItem is selected, the second one not. And now here it comes. When I click on the button (button in RadTabItem header) in the RadTabItem which is NOT selected, the event is not fired, only this specified RadTabItem becomes selected. So the click events are fired only when the RadTabItem is Selected.

The following behavior would be best for me: When I click on the button in header of arbitrary RadTabItem (selected or not) the click event of the button will be fired but the selection of the RadTabItems will NOT changed.

Is this scenario possible ? Or it would be great if at least the event of the buttons will be fired no matter the RadTabItem is selected or not.

Thank you a lot.

Stefan.

TabControl

answered on 06 May 2010