Questions on UI for WPF Forum

12 answers

386 views

I want to change the Foreground and Background of the Month and Year Button (Currently by default the foreground is grey and the background also). What is the simplest way of doing that.

Attached is the current view (December 2009)

Thanks,
Anjan

DatePicker

answered on 15 Apr 2010

1 answer

128 views

How to acces element in TitleTemplate of RadPane

Hello.

I have trouble to programatically acces element in TitleTemplate of RadPane.
I have this following style applied to my RadPane, where is also specified the DataTemplate of TitleTemplate.
For example I would like to acces the "PART_ParentControls" element. Can you please help me ?
Thanks a lot.
Here is the style xaml:

   <Style x:Key="TelerikRadPaneStyle1" TargetType="{x:Type telDockingControls:RadPane}">
        <Setter Property="CanUserPin" Value="False" />
        <Setter Property="CanFloat" Value="True" />
        <Setter Property="CanUserClose" Value="False" />
        <Setter Property="ContextMenuTemplate">
            <Setter.Value>
                <DataTemplate>
                    <telNavigationControls:RadContextMenu Visibility="Collapsed" />
                </DataTemplate>
            </Setter.Value>
        </Setter>
        <Setter Property="TitleTemplate">
            <Setter.Value>
                <DataTemplate >
                    <Grid x:Name="mainGrid">
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="20" />
                            <ColumnDefinition Width="*" />
                            <ColumnDefinition Width="Auto" />
                        </Grid.ColumnDefinitions>

                        <Border BorderThickness="1" BorderBrush="Black" Margin="0,5,2,5" >
                            <Canvas Grid.Column="0" Background="White" Opacity="1" IsHitTestVisible="True" ToolTip="Drag to move the window" />
                        </Border>

                         <breadCrumbBar:BreadcrumbBar x:Name="bar" Grid.Column="1" Margin="1" Path="News"
                                                            TraceBinding="{Binding XPath=@title}" BorderBrush="{x:Null}"
                                                            Root="{StaticResource dataProvider}" Background="Transparent"
                                                            >
                            <breadCrumbBar:BreadcrumbBar.PreButtons>
                                <Button>
                                    <Image Style="{StaticResource Backward}" Opacity="0.8" Width="16" Height="16"/>
                                </Button>
                                <Button>
                                    <Image Style="{StaticResource Forward}" Opacity="0.8" Width="16" Height="16"/>
                                </Button>
                            </breadCrumbBar:BreadcrumbBar.PreButtons>
                            <breadCrumbBar:BreadcrumbBar.Buttons>
                                <Button>
                                    <Image Style="{StaticResource Close}" Opacity="0.5" Width="16" Height="16" HorizontalAlignment="Right"/>
                                </Button>
                            </breadCrumbBar:BreadcrumbBar.Buttons>
                        </breadCrumbBar:BreadcrumbBar>

                        <Grid Grid.Column="2" x:Name="PART_ParentControls" />

                    </Grid>
                </DataTemplate>
            </Setter.Value>
        </Setter>
    </Style>

Docking

answered on 15 Apr 2010

7 answers

166 views

3D Chart --> Object reference not set ...

Hi

I have the following code and I'm taking an "Object reference not set ..." when I use Bar3DSeriesDefinition.

But when I set SeriesDefinition to a 2D definition (e.g. BarSeriesDefinition), everything is OK !!!

What I'm doing wrong?

                        Dim dt As New DataTable         
                dt.Columns.Add("Year", GetType(String))         
                dt.Columns.Add("Sales", GetType(Double))         
                dt.Rows.Add("2007", 37000)         
                dt.Rows.Add("2008", 42000)         
                dt.Rows.Add("2009", 47000)         
                dt.Rows.Add("2010", 44000)         
                     
                With Me.RadChart1         
                  Dim sm As New SeriesMapping         
                  sm.SeriesDefinition = New Bar3DSeriesDefinition 'BarSeriesDefinition          
                  sm.ItemMappings.Add(New ItemMapping("Year", DataPointMember.XCategory))         
                  sm.ItemMappings.Add(New ItemMapping("Sales", DataPointMember.YValue))         
                  .SeriesMappings.Add(sm)         
                  .ItemsSource = dt         
                End With         
                     

Chart

answered on 15 Apr 2010

2 answers

177 views

RadTileView Position

Good morning,

In my program, I've got 2 RadTileView.Items : one is visible and the second one is hidden depending of the number of image to display.
The first one is always visible and Maximized.

But if I change the Visibility Property of the second one to Visible, the first RadTitleView.item hide the second one.
I notice that the position property of the second one is equal to -1.

If the 2 items are visible when I start the program, the property of the second is equal to 1.

Do you have a solution to reorder the radTileView?

thanks

TileView

answered on 15 Apr 2010

3 answers

141 views

Range Slider issue

Hello,
I am using a slider such as the one below:

    
            <telerik:RadSlider   
        
              Minimum="0" 
        
              Maximum="10" 
        
              TickFrequency="1" 
        
              IsSelectionRangeEnabled="True" 
        
              IsSnapToTickEnabled = "True" 
        
              MinimumRangeSpan="1" 
        
              SelectionStart="1" 
        
              SelectionEnd="2" 
        
            />

Correct me if I am wrong, but I guess there is a problem, if you drag the SelectionRange area to the right, then you won't be able to move it to the left.
Is there a solution for this behavior?
Thanks :)

Slider

answered on 15 Apr 2010

1 answer

142 views

RadPane Content empty until refocus

Hi,

I'm adding instances of RadPane to a RadPaneGroup at runtime following a RadMenuItem click event:

    
                    private void RadMenuItem_Click(object sender, Telerik.Windows.RadRoutedEventArgs e) 
        
                    { 
        
                        RadPane rp = new RadPane(); 
        
                        rp.Header = "New Foo"; 
        
                        rp.VerticalAlignment = VerticalAlignment.Top; 
        
                        rp.Name = "Foo"; 
        
                        rp.IsSelected = true; 
        
                        radPaneGroup1.AddItem(rp, Telerik.Windows.Controls.Docking.DockPosition.Center); 
        
                        Foo foo = new Foo(); 
        
                        rp.Content = foo; 
        
                    }

The RadPane is shown as the last pane in the group and appears to have the focus as the pane header is highlighted.
However, my user control, "Foo", isn't shown in the RadPane.

Please note: This has only started happening with the Q1 2010 WPF controls! This doesn't happen with the Q3 2009 WPF controls.

If I click on a different pane then back to my new pane, the user control, "Foo", is now visible in the new pane!

If there is more than 1 pane displayed I can use this code as a workaround at the end of my click event:

    
                        foreach (RadPane pane in radPaneGroup1.Items) 
        
                        { 
        
                            pane.Focus(); 
        
                        }

The above workaround doesn't work if the pane added is the only pane in the group.

I tried the code in Miroslav's blog but this didn't work for me either:
http://blogs.telerik.com/miroslavnedyalkov/posts/10-03-04/how_to_activate_a_pane_in_the_telerik_docking_control_for_wpf_and_silverlight.aspx

Any idea what I need to add to make my code work with the new version of these controls?

Thanks,
Mark

Docking

answered on 15 Apr 2010

2 answers

134 views

DataFormatString on sub-property

I'm trying to get a subproperty formatted, but it doesn't seem to be working. It's just showing the value without any formatting.

My xaml:

                    <Window x:Class="GridFormatTest.MainWindow"         
                    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         
                    Title="MainWindow" Height="350" Width="525" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" xmlns:System="clr-namespace:System;assembly=mscorlib">         
                <Grid Loaded="Grid_Loaded">         
                    <telerik:RadGridView HorizontalAlignment="Left" Name="radGridView1" VerticalAlignment="Top" Height="311" Width="503">         
                        <telerik:RadGridView.Columns>         
                            <telerik:GridViewDataColumn Header="Works" DataMemberBinding="{Binding Size}" DataFormatString="{}{0:N}"/>         
                            <telerik:GridViewDataColumn Header="Doesn't work" DataMemberBinding="{Binding SubItem.SubSize}" DataFormatString="{}{0:N}" DataType="{x:Type System:Double}"/>         
                        </telerik:RadGridView.Columns>         
                    </telerik:RadGridView>         
                </Grid>         
            </Window>         

The code:

                    using System;         
            using System.Collections.Generic;         
            using System.Linq;         
            using System.Text;         
            using System.Windows;         
            using System.Windows.Controls;         
            using System.Windows.Data;         
            using System.Windows.Documents;         
            using System.Windows.Input;         
            using System.Windows.Media;         
            using System.Windows.Media.Imaging;         
            using System.Windows.Navigation;         
            using System.Windows.Shapes;         
                     
            namespace GridFormatTest         
            {         
                public class Order         
                {         
                    public Order()         
                    {         
                        this.Size = 12000.0;         
                        this.SubItem = new SubOrder();         
                    }         
                     
                    public double Size { get; private set; }         
                     
                    public SubOrder SubItem { get; set; }         
                }         
                     
                public class SubOrder         
                {         
                    public SubOrder()         
                    {         
                        this.SubSize = 150000;         
                    }         
                     
                    public double SubSize { get; set; }         
                }         
                     
                /// <summary>         
                /// Interaction logic for MainWindow.xaml         
                /// </summary>         
                public partial class MainWindow : Window         
                {         
                    public MainWindow()         
                    {         
                        InitializeComponent();         
                    }         
                     
                    private void Grid_Loaded(object sender, RoutedEventArgs e)         
                    {         
                        radGridView1.ItemsSource = new List<Order>         
                        {         
                            new Order(),         
                            new Order()         
                        };         
                    }         
                }         
            }         

As you can see I've also tried to set the DataType manually, which I noticed was the solution to another similar problem I found on the forums. But that doesn't help.

Any suggestions?

GridView

answered on 15 Apr 2010

1 answer

237 views

Changing mouseover fontweight

I am using nested tabs and styling my high-level tabs not to look like tabs. They are more like a simple header link list. The styling has worked fine, was easy, but I would like to change the fontweight to bold on mouseover. Here is the section of code I am using. The styling of the IsSelected states is working fine, but I can't get the IsMouseOver styling to work. What am I doing wrong?

<ControlTemplate.Triggers>

<Setter.Value>

</LinearGradientBrush>

</Setter.Value>

</Setter>

<Setter.Value>

</LinearGradientBrush>

</Setter.Value>

</Setter>

</Trigger>

<Setter.Value>

</LinearGradientBrush>

</Setter.Value>

</Setter>

<Setter.Value>

</LinearGradientBrush>

</Setter.Value>

</Setter>

</Trigger>

<Setter.Value>

</LinearGradientBrush>

</Setter.Value>

</Setter>

<Setter.Value>

</LinearGradientBrush>

</Setter.Value>

</Setter>

</Trigger>

</Trigger>

</ControlTemplate.Triggers>

TabControl

answered on 15 Apr 2010

1 answer

97 views

Bug in GridViewDataControl

Hello All,

In the private bool Telerik.Windows.Controls.GridView.GridViewDataControl.Move(FocusNavigationDirection navigationDirection) method, there is an unchecked condition in the FocusNavigationDirection.Next and Previous switch condition that throws a NullRefereceException. Below is the code snippet:

    
                  switch (navigationDirection)  
        
                  {  
        
                    case FocusNavigationDirection.Next:  
        
                    case FocusNavigationDirection.Previous:  
        
                      if (!this.CurrentCell.IsInEditMode)  
        
                      { //...

I know its a bug because just below that is the proper form of the condition that checks this.CurrentCell for null:

    
                    case FocusNavigationDirection.Left:  
        
                    case FocusNavigationDirection.Right:  
        
                    case FocusNavigationDirection.Up:  
        
                    case FocusNavigationDirection.Down:  
        
                      currentCellContainer = this.OnArrowKeyDown(this.CurrentCell, navigationDirection);  
        
                      if ((this.CurrentCell != null) && this.CurrentCell.IsInEditMode)  
        
                      { //...

- Rashad Rivera
omegusprime.com

GridView

answered on 15 Apr 2010

6 answers

337 views

How to set multiple (custom) editTriggers for the DataGrid

Default setting for the EditTriggers in the DataGrid is "Mouse DoubleClick". However I want to be able to edit the cells if either of the following events happen:

1. Enter Key Press
2. Mouse DoubleClick
3. F2 Key Press

Can you tell me how to do this? I didn't find anything in the documentation regarding this.

GridView

answered on 14 Apr 2010