Questions on UI for WPF Forum

1 answer

155 views

Grid Row Styling

I need to alter the default validation error styles in the RadGridView. Errors are generated via INotifyDataErrorInfo

One of the main changes is to remove the "reddish" background that is shown on the row when an error exists in one of the columns.

I have been trying to follow the instructions for styling a row here: http://www.telerik.com/help/wpf/gridview-styling-a-row.html

The instructions indicate one should be able to go to Object -> Edit Additional Styles -> Edit Row Style -> Edit a copy...

However, the only option I have is "Create Empty..." so am unsure as to what the original style looks like so it is difficult to alter. The instructions indicate I should be able to "Edit a copy..." which would give me the style properties I need.

Is there something I'm missing?

Here is a quick example of the XAML being used:

<Window x:Class="TelerikGridTest.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:telerikGridTest="clr-namespace:TelerikGridTest"

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

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

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

<Window.Resources>

<ResourceDictionary>

<ResourceDictionary.MergedDictionaries>

<ResourceDictionary Source="/Telerik.Windows.Themes.Transparent;component/Themes/Telerik.Windows.Controls.GridView.xaml" />

</ResourceDictionary.MergedDictionaries>

</ResourceDictionary>

</Window.Resources>

<Grid>

<telerik:RadGridView ItemsSource="{Binding Rows}" ActionOnLostFocus="None" GroupRenderMode="Flat" AutoGenerateColumns="False" CanUserInsertRows="True" NewRowPosition="Bottom" >

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn Header="Column One" DataMemberBinding="{Binding ColumnOne, UpdateSourceTrigger=PropertyChanged}" />

<telerik:GridViewDataColumn Header="Column Two" DataMemberBinding="{Binding ColumnTwo, UpdateSourceTrigger=PropertyChanged}"/>

<telerik:GridViewDataColumn Header="Column Three" DataMemberBinding="{Binding ColumnThree, UpdateSourceTrigger=PropertyChanged}"/>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

</Grid>

</Window>

GridView

answered on 17 Jul 2014

4 answers

90 views

TrackBallInfo snap to series

Hi,

I see that snap mode has three options; None, AllClosePoints, ClosestPoint. However I was wondering if it is possible to snap to a given series only? For example series 1 has 300 data points but series 2 only has 100 (both can be plotted on the same chart). I would like the TrackBallInfo to only snap to data points in series 2 (but show data for 1 and 2)

Thanks for your help!

ChartView

answered on 17 Jul 2014

1 answer

1.1K+ views

how to cancel row level edit event

Hi,
I am using telerik RadGridview 2013 Q3. We have a N-Tier app, so I am saving the record per row instead of per cell. I have a requirement from the business user mandating a confirmation dialog to be shown asking if the user wants to save the data when the user navigates away from the current editing row. I tried to show the confirmation dialog at the roweditended event, but when the user clicks on No, the row's edit mode is still being ended. I don't want the edit mode to end when the user does not want to save the row and I want the focus to stay on the current editing cell.

The way I think this might work is that if we can somehow stop the roweditended event chain in code, I tried to call e.Handled = true, but that doesn't do anything, the row is still being edit ended.
A workaround I found is that If I move the confirmation dialog code to the rowvalidating event and set the IsValid to false to stop the row edit ended event being fired, however this causes an undesired side effect of the row turning to red, I have consulted with the business users, and they feel like it's too confusing to have the background turn red when there's no validation error.
My question would be, how does telerik cancel the row level editing event without setting the IsValid to false?

GridView

answered on 17 Jul 2014

1 answer

184 views

Item container recycling?

I was testing out this panel but found that it does not support item container recycling. E.g., if I set:

VirtualizingPanel.VirtualizationMode="Recycling"

Item containers are still created new each and every time. Are there any plans to support this feature? WPF's default VirtualizingStackPanel supports it OOTB, so I was expecting it here as well.

VirtualizingWrapPanel

answered on 17 Jul 2014

1 answer

120 views

Disable tile reordering

Is it possible to disable tile reordering (by the user), without disabling the entire TileList control?

TileList

answered on 17 Jul 2014

7 answers

342 views

Drag and Drop enabed ItemsControl with ContextMenu

Hi,
I'm working on a WPF desktop application using RadControls for WPF version 2010.1.0603.35.
I have a number of ListView and RadTreeView controls that are Drag and Drop enabled. They also have a RadContextMenu. The problem I have is when I right click on an item then immediately left click the same or another item in the control. This seems to enable drag and drop and sometimes move items around. In order to reproduce this I used the Demo solution installed with the Telerik product. I took the DragAndDrop TreeToGrid example and I added a RadContextMenu to the ListBox and the RadTreeView as shown below.

    
            <nav:RadTreeView x:Name="allProductsView" 
        
                    ItemTemplateSelector="{StaticResource ExampleTemplateSelector}" 
        
                    ItemContainerStyle="{StaticResource TreeViewItemStyle}" 
        
                    IsDragDropEnabled="True" Background="White" BorderThickness="1" 
        
                    BorderBrush="LightGray"   
        
                    Padding="16">  
        
                <telerikNavigation:RadContextMenu.ContextMenu> 
        
                    <telerikNavigation:RadContextMenu > 
        
                        <telerikNavigation:RadMenuItem Header="RadTreeView Menu 1" /> 
        
                        <telerikNavigation:RadMenuItem Header="RadTreeView Menu 2"  /> 
        
                    </telerikNavigation:RadContextMenu> 
        
                </telerikNavigation:RadContextMenu.ContextMenu> 
        
            </nav:RadTreeView> 
        
            <ListBox x:Name="wishlistView" Grid.Column="2" 
        
                    telerik:StyleManager.Theme="Office_Black" SelectionMode="Extended" 
        
                    dragDrop:RadDragAndDropManager.AllowDrop="True" 
        
                    ItemTemplate="{StaticResource WishlistProduct}" 
        
                    ItemContainerStyle="{StaticResource WishlistItemStyle}" Padding="16" > 
        
                <telerikNavigation:RadContextMenu.ContextMenu> 
        
                    <telerikNavigation:RadContextMenu > 
        
                        <telerikNavigation:RadMenuItem Header="ListBox Menu 1" /> 
        
                        <telerikNavigation:RadMenuItem Header="ListBox Menu 2"  /> 
        
                    </telerikNavigation:RadContextMenu> 
        
                </telerikNavigation:RadContextMenu.ContextMenu> 
        
            </ListBox>

Using this example you can right-click on any item under Wishlist and then immediately left-click on a different item under the same control. The items will most likely shuffle around. In any case (on the RadTreeView also) it will enable the drag and drop event and that is not desirable functionality for me.

Your help is very much appreciated.

Thank you,
Ogi Ivanov

DragAndDrop

answered on 17 Jul 2014

2 answers

58 views

Cancellation Of The Change Expanded

Good day.
I need to catch changes Expanded and under certain conditions, to cancel this action.
I tried to implement this by using event GroupRowIsExpandedChanging, but property args.Row.IsExpanded has changed.
Help me, please :(

GridView

answered on 17 Jul 2014

2 answers

80 views

RadDocument Windows XP Problem

Hello,
im using Telerik version 2013.3.1016.40,
i have problem on displaying Text on Windows XP or Server 2003 ,
on attached screenshot: the line 2 is not perfectly visible
Envirenment :
- Windows XP
- WPF 4.0
- MVVM technologie

the same Code is working perfect on Windows 7.

please Help,
thank you

RichTextBox

answered on 17 Jul 2014

1 answer

83 views

RadDocument Windows XP Problem

Hello,
i have problem on displaying document on Windows XP/ Windows 2003 Server
the same Code working perfectly on Windows 7
on attached screenshot the second line is not complet displayed
Envirenment:
-OS: Windows XP
-.Net 4.0
-Telerik version 2013.3.1016.40
- Technologie : MVVM

please Help.
thank you

RichTextBox