Questions on UI for WPF Forum

4 answers

203 views

Hi everyone!

I am trying to build a custom theme which is based on "OfficeSIlver" - or any other built-in theme... My first approach was to simply copy the according theme project to my solution and then run a "Search & Replace" to replace "Office_Silver" to "Office_Custom". I changed the "Build"-Settings of the project (assembly-name and default-namespace) accordingly.

Then I added a custom "Theme" class which derived from "Theme" and is named "Office_CustomTheme".
I referenced the new theme-project, instantiated the theme and set it as application-wide theme.

I get a LOAD of xaml-parsing-errors. Nothing seems to work right.
The least of my problems was the "external" namespace definition:
xmlns:external="clr-namespace:Telerik.Windows.Controls.External"

(which just does not exist)

or some mysterious "external:Office_SilverThemeExternal":
x:Key="{telerik:ThemeResourceKey ThemeType=external:Office_SilverThemeExternal , ElementType=telerik:RadButton}"

After fixing that (renaming to my new local theme) still nothing works as expected, xaml-files are referenced but not found - if that is fixed some other obsucre errors pop up. After that I just gave up.

I am very disappointed - since telerik advertises that everything is easily and effortless to customize (in Blend even)
The documentation link that "should" probably describe how it is done the right way is down.

I would very much appreciate a step by step description on how to achieve this.

Thank you very much.

Kind regards,
Wolfgang

General Discussions

answered on 17 Oct 2011

1 answer

233 views

Validation errors not shown in GridView immediately

I'm using the MVVM pattern to build an application. I have a GridView that shows a collection of ViewModels that are connected to entities. These entities have validation implemented in them.

All this works, and the grid indicates cells that have validation errors by giving them a red border.

It is possible for the entities to be edited in another place in my application while they are displayed in the GridView. When this happens, these entities will be reloaded in the GridView and validated again. This works and I have verified that the validation errors are set as they should.

However, the GridView doesn't show the validation error immediately. If a cell that is visible has an error, the red border is not displayed. But if I scroll the GridView so that the cell is no longer visible, and then scroll it back into view, the red border appears!

Somehow I need to tell the GridView to update the validation errors. How can I do that?

GridView

answered on 17 Oct 2011

1 answer

144 views

Drag and Drop DragCue Change

Is there a way that I can use the built in Drag and Drop handler while Dragging and Dropping in a RadTreeView, while modifying the DragCue message? I have a couple of my own rules that I use in a PreviewDragEnded function, and I would like to change the DragCue to show what is allowed or not.

For example, if I have a tree with
Tree
--Nest
---Bird
---Bird2

I can set the PreviewDragEnded function to check that you don't drop a Nest into a bird. If you do, then I use e.handled = true and ignore the drag and drop action. I would like for the DragCue to show that it is not allowed first, instead of just not allowing it after the mouse button is released. I can do this if I write the DragQuery, DragInfo, DropQuery, and DropInfo functions, but I want to use the Rad versions of these functions that already exist (except for the modified DragCue, of course).

Thanks for your help.
Scott

DragAndDrop

answered on 17 Oct 2011

4 answers

129 views

itrating over each color in colorpicker

Hello Telerik team,

Can you please suggest how to itrate over each color in the main Palette when it is set to "web216". What I want is I should be able to set and get color by looping over each color in the palette with the help of an index.
eg:
var int myColor = web216[1]
and vice versa.

thank you very much.
regards.

ColorPicker

answered on 17 Oct 2011

4 answers

219 views

Event trigger when FilteredSource is updated

Is there currently a way to trigger an event when the FilteredSource has been updated by the DataFilter? Something like a CollectionChanged event or FilteredCompleted.

Thanks,
Shawn

DataFilter

answered on 17 Oct 2011

1 answer

107 views

Missing Documentation?

I tried to look up the documentation for this new class, but realized that it is not posted: (see http://www.telerik.com/help/wpf/introduction.html). Perhaps the link is missing?

DataForm

answered on 17 Oct 2011

1 answer

144 views

Changing Control type durring AutoGen

Hello All,

I need to change the control type durring AutoGeneration of a property to a ListBox. In my case, I have an 'int' property which is the primary key in a list table. Since the table changes from time to time, I can't use an Enum type. So how can I change the control type at run-time?

DataForm

answered on 17 Oct 2011

6 answers

149 views

Rad

Hi,
In my WPF project i want to show 5 images while we mouse over the navigation button at the time of clicking the last image next set of 5 images needs to come please help me out in this issue.

Regards,
Rajini.

Carousel

answered on 17 Oct 2011

8 answers

174 views

Unable to design RadTreeView in Blend

Hi,

I'm having a problem with setting the RadTreeViewItem's CheckState property through the ItemContainerStyle of the RadTreeView. Specifically, I receive an error message every time I try to edit the xaml in design mode with Blend (versions 3 or 4 RC) and nothing gets rendered on the design surfice. The message is:

"The member 'CheckState' is not recognized or is not accessible."

I managed to reproduce the problem with a stripped-down version of the xaml:

    
            <Window x:Class="WpfApplication18.MainWindow" x:Name="Window" 
        
                    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"   
        
                    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"               
        
                    xmlns:telerikNavigation="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation" 
        
                    mc:Ignorable="d"   
        
                    Width="640" Height="480" 
        
                    xmlns:sys="clr-namespace:System;assembly=mscorlib">  
        
                <Grid>   
        
                    <telerikNavigation:RadTreeView IsOptionElementsEnabled="True">              
        
                        <telerikNavigation:RadTreeView.Items> 
        
                            <sys:String>Item 1</sys:String>               
        
                            <sys:String>Item 2</sys:String>               
        
                            <sys:String>Item 3</sys:String>      
        
                        </telerikNavigation:RadTreeView.Items> 
        
                        <telerikNavigation:RadTreeView.ItemContainerStyle> 
        
                            <Style TargetType="{x:Type telerikNavigation:RadTreeViewItem}">  
        
                                <Setter Property="CheckState" Value="On" />   

                                <Setter Property="OptionType" Value="CheckList" />                   
        
                            </Style> 
        
                        </telerikNavigation:RadTreeView.ItemContainerStyle> 
        
                    </telerikNavigation:RadTreeView>         
        
                </Grid> 
        
            </Window>

It's only the CheckState property that's causing the problem (the OptionType property from the sample works fine).
Sources on the internet suggest tha an internal exception in the property 'setter' might be causing such behavior but that's just a clue.
Do you have any idea how I can get it working in Blend ??

TreeView