Questions on UI for WPF Forum

2 answers

132 views

Hi,

I am using RadTreeView and trying to support DragDrop behavior in it. At the moment, I am writing my own DragDropProvider. I want to provide options when user release/drop, so that they can choose Copy/Move/Cancel etc.

Is there any resources to help me achieve that?

Many thanks,

Mingxue

DragAndDrop

answered on 14 Jun 2016

1 answer

138 views

Filtering a ComboBox with a GroupStyle

Please see the StackOverflow post here:

http://stackoverflow.com/questions/37794073/filtering-a-combobox-with-a-groupstyle

ComboBox

answered on 13 Jun 2016

7 answers

204 views

Cannot update cell

Hi,

I have a RadGridView as shown in the below code

<telerik:RadGridView Name="radGV_Library" AutoGenerateColumns="False" ItemsSource="{Binding ListOfLibraryObjects}" ShowGroupPanel="False" SelectionChanged="radGV_Library_SelectionChanged" CanUserSortColumns="False" CanUserFreezeColumns="False" CanUserReorderColumns="False" CanUserResizeColumns="False">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn Header="Name" DataMemberBinding="{Binding Name}" IsFilterable="False" >

<telerik:GridViewDataColumn Header="Description" DataMemberBinding="{Binding Description}" IsFilterable="False" IsReadOnly="True"/>

<telerik:GridViewDataColumn Header="Is Master" DataMemberBinding="{Binding IsMaster}" IsFilterable="False" IsReadOnly="True" />

<telerik:GridViewDataColumn Header="Object ID" DataMemberBinding="{Binding ObjectID}" IsFilterable="False" IsReadOnly="True"/>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

The GridView is in a user control and the data context is passed to the user control it as below

public void RefreshDataContext(VOC.Models.TheGameScreenM _theGSM)

{

this.DataContext = null;

    this.DataContext = _theGSM;

}

The GridView loads and refreshes with no problem. But I cannot edit the first column (the name column, which is string data). When the cell gets into edit mode, only the "space" and "back space" works. No other keys on the keyboard works to update the cell content. But however, the paste from right-click context menu works. So if I copy a text from somewhere and paste it in the cell, then that works.

I have tried
1. Mode = TwoWay
2. DataType = "{x:Type sys:String}"

nothing works!

Why is that?

GridView

answered on 13 Jun 2016

5 answers

55 views

Why text would be pixelized/rasterized when zooming in/out

I have some Text as part of my Diagram Shapes but text values some times get rasterized and loose their clearances and their qualities.

Is there anyway to resolve this issue ?

Diagram

answered on 13 Jun 2016

4 answers

854 views

Right align button in toolbar with multiple toolbars and toolbartray

I would like to have a toolbartray with multiple toolbars. In the last toolbar I would like to right align some of the buttons. I can align to the right if there is a single toolbar and no toolbartray but when I add the toolbartray the buttons are no longer aligned to the right. The toolbartray is contained in a grid. Thank you for your help.

ToolBar

answered on 13 Jun 2016

9 answers

782 views

Apply theme in a mvvm wpf application (caliburn.micro)

I am just trying to apply a theme in a mvvm wpf caliburn.micro app. I added references for the necessary no-xaml wpf binaries (Telerik.Windows.Controls/Navigation, Telerik.Windows.Data (Binaries.NoXAML), in addition I added a reference to the required theme (Telerik.Windows.Themes.Green) and added the resources in a merged resource dictionary in my app.xaml.

I still can't get theming to work. Using implicit styled controls, I can't see any data displayed, but not using implicit styles everything is ok!

1) what am I missing?

2) And where should I apply e.g. : GreenPalette.LoadPreset(GreenPalette.ColorVariation.Dark) - in my bottstrapper?;

Thanks for your help.

Oliver

app.xaml

01.<Application x:Class="Notizen.App" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:Notizen">

02. <Application.Resources>

03. <ResourceDictionary>

04. <ResourceDictionary.MergedDictionaries>

09. <ResourceDictionary Source="/Telerik.Windows.Themes.Green;component/Themes/Telerik.Windows.Controls.xaml" />

10. <ResourceDictionary Source="/Telerik.Windows.Themes.Green;component/Themes/Telerik.Windows.Controls.Navigation.xaml" />-->

11. <ResourceDictionary Source="/Telerik.Windows.Themes.Green;component/Themes/System.Windows.xaml" />

12. <ResourceDictionary Source="/Telerik.Windows.Themes.Green;component/Themes/Telerik.Windows.Controls.xaml" />

13. <ResourceDictionary Source="/Telerik.Windows.Themes.Green;component/Themes/Telerik.Windows.Controls.Navigation.xaml" />

14. <ResourceDictionary>

15. <local:AppBootstrapper x:Key="bootstrapper" />

16. </ResourceDictionary>

17. </ResourceDictionary.MergedDictionaries>

18. </ResourceDictionary>

19. </Application.Resources>

20.</Application>

appbootsrapper.cs

01.namespace Notizen {

02. using System;

03. using System.Collections.Generic;

04. using Caliburn.Micro;

05. using System.ComponentModel.Composition.Hosting;

06. using System.Linq;

07. using System.ComponentModel.Composition;

08. using System.Windows;

09. using Telerik.Windows.Controls;

10. public class AppBootstrapper : BootstrapperBase {

11.

12. private CompositionContainer container;

13.

14. public AppBootstrapper()

15. {

16. Initialize();

17. }

18.

19. protected override void Configure()

20. {

21. container = new CompositionContainer(

22. new AggregateCatalog(AssemblySource.Instance.Select(x => new AssemblyCatalog(x)))

23. );

24.

25. var batch = new CompositionBatch();

26.

27. batch.AddExportedValue<IWindowManager>(new WindowManager());

28. //batch.AddExportedValue<IWindowManager>(new TelerikWindowManager());

29. batch.AddExportedValue<IEventAggregator>(new EventAggregator());

30. batch.AddExportedValue(container);

31.

32. // This is essential to enable Telerik's conventions

33. TelerikExtensions.TelerikConventions.Install();

34.

35. GreenPalette.LoadPreset(GreenPalette.ColorVariation.Dark);

36. //StyleManager.ApplicationTheme = ThemeManager.FromName("Expression_Dark");

37.

38. container.Compose(batch);

39. }

40.

41. protected override object GetInstance(Type serviceType, string key)

42. {

43. string contract = string.IsNullOrEmpty(key) ? AttributedModelServices.GetContractName(serviceType) : key;

44. var exports = container.GetExportedValues<object>(contract);

45.

46. if (exports.Any())

47. return exports.First();

48.

49. throw new Exception(string.Format("Could not locate any instances of contract {0}.", contract));

50. }

51.

52. protected override IEnumerable<object> GetAllInstances(Type serviceType)

53. {

54. return container.GetExportedValues<object>(AttributedModelServices.GetContractName(serviceType));

55. }

56.

57. protected override void BuildUp(object instance)

58. {

59. container.SatisfyImportsOnce(instance);

60. }

61.

62. protected override void OnStartup(object sender, StartupEventArgs e)

63. {

64. DisplayRootViewFor<IShell>();

65. }

66.

67. }

68.}

tagsView.xaml

01.<UserControl x:Class="Notizen.Views.TagsView"

02. xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

03. xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

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

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

06. xmlns:local="clr-namespace:Notizen.Views"

07. xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

08. xmlns:vm="clr-namespace:Notizen.ViewModels"

09. mc:Ignorable="d"

10. d:DesignHeight="300" d:DesignWidth="300">

11. <UserControl.Resources>

12.

13. <Style x:Key="radTreeViewItemStyle" TargetType="{x:Type telerik:RadTreeViewItem}">

14. <Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}" />

15. <Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}" />

16. <Setter Property="FontWeight" Value="Normal" />

17. <Style.Triggers>

18. <Trigger Property="IsSelected" Value="True">

19. <Setter Property="FontWeight" Value="Bold" />

20. </Trigger>

21. </Style.Triggers>

22. </Style>

23.

24. <HierarchicalDataTemplate x:Key="hierarchicalDataTemplate"

25. DataType="{x:Type vm:TagViewModel}"

26. ItemsSource="{Binding Tags}">

27. <DockPanel LastChildFill="True">

28. <StackPanel DockPanel.Dock="Right" Orientation="Horizontal" HorizontalAlignment="Right">

29. <TextBlock Text="{Binding Count}" Padding="0,0,5,0" Foreground="Gray" />

30. </StackPanel>

31. <StackPanel DockPanel.Dock="Left" Orientation="Horizontal">

32.

33. 

34. <TextBlock Text="{Binding Name}" Foreground="#FF1E4BAC" />

35. </StackPanel>

36.

37. </DockPanel>

38. </HierarchicalDataTemplate>

39. </UserControl.Resources>

40. <DockPanel LastChildFill="True">

41. <TextBlock DockPanel.Dock="Top" Background="CornflowerBlue" x:Name="Message" />

42. <telerik:RadTreeView x:Name="Tags" DockPanel.Dock="Bottom"

43. ItemsSource="{Binding Path=Tags}"

44. ItemTemplate="{StaticResource hierarchicalDataTemplate}"

45. ItemContainerStyle="{StaticResource radTreeViewItemStyle}"

46.

47. >

48. 

49. 

50. 

51. <!--<telerik:RadTreeView.Items>

52. <telerik:RadTreeViewItem Name="Item" Header="Root"></telerik:RadTreeViewItem>

53. </telerik:RadTreeView.Items>-->

54.

55. </telerik:RadTreeView>

56. </DockPanel>

57.</UserControl>

tagsViewModel.cs


01.using Caliburn.Micro;
02.using System;
03.using System.Collections.Generic;
04.using System.Collections.ObjectModel;
05.using System.Linq;
06.using System.Text;
07.using System.Threading.Tasks;
08. 
09.namespace Notizen.ViewModels
10.{
11.    public class TagsViewModel : Screen
12.    {
13.        private TagViewModel tag;
14. 
15.        public string Message { get; set; }
16. 
17.        public TagsViewModel()
18.        {
19.            Tags = new ObservableCollection<TagViewModel>();
20.        }
21. 
22.        public TagViewModel RootTag
23.        {
24.            get
25.            {
26.                return this.tag;
27.            }
28. 
29.            set
30.            {
31.                this.tag = value;
32.                Tags.Add(value);
33.                NotifyOfPropertyChange(()=> Tags);
34.            }
35.        }
36. 
37.        public ObservableCollection<TagViewModel> Tags
38.        {
39.            get;
40.            set;
41.        }
42.    }
43.}

shellviewModel.cs


01.using System;
02.using Notizen.ViewModels;
03.using Notizen.Model;
04.using System.Linq;
05.using Caliburn.Micro;
06.using System.Collections.ObjectModel;
07.using System.ComponentModel.Composition;
08. 
09.namespace Notizen {
10.    [Export(typeof(IShell))]
11.    public class ShellViewModel : Caliburn.Micro.PropertyChangedBase, IShell {
12. 
13.        private TagViewModel _tags;
14.        public TagViewModel TagViewModel
15.        {
16.            get { return _tags; }
17.            set {
18.                if (_tags != value) return;
19.                _tags = value;
20.                NotifyOfPropertyChange(()=> TagViewModel);
21.            }
22.        }
23. 
24.        private string _helloText;
25. 
26.        public string HelloText
27.        {
28.            get { return _helloText; }
29.            set { _helloText = value; }
30.        }
31. 
32.        public TagsViewModel Tags { get; set; }
33. 
34. 
35.        public ShellViewModel()
36.        {
37.            LoadTags();
38.            HelloText = "Hello!";
39.             
40.        }
41. 
42.        private void LoadTags()
43.        {
44.            using (var context = new NotizenDbContext())
45.            {
46.                var roottag = context.Tags.Where(x => x.TagParentId == null).FirstOrDefault();
47. 
48.                //var tagViewModel = new TagViewModel(roottag, null);
49. 
50.                //TagViewModel = tagViewModel;
51. 
52.                Tags = new TagsViewModel() { Message = "Message from TestViewModel" , RootTag = tagViewModel  };
53.            }
54.        }
55.    }
56.}

General Discussions

answered on 13 Jun 2016

7 answers

191 views

2012Q1 RadGridView implicit style does not show group header

Hi. I have an strange behaviour, but I cannot tell when did it happen. I just have a project with a view containing a radgridview, using implicit styles, but the group header is not shown. Whenever I put another radgridview in the same view without any attribute set, also the header is not shown, but it is shown if I am using it in a view of a new project without implicit styles.

Did anyone got this problem and found a solution?

Thanks.

David.

GridView

answered on 13 Jun 2016

1 answer

153 views

Custom style for propertygridfield is not working

Can you please look into this issue

Iam getting XAML Parse Exception when i tried to define style PropertyGridFieldStyle

PropertyGrid

answered on 13 Jun 2016

1 answer

104 views

Implementing ItemCreated in ViewModel (MVVM)

Hello All,
I have a need to implement the ItemCreated event over in the ViewModel for a RadCombobox. I need an example of binding the event to a function. Does anyone know of an example out there??? In my View I have a RadComboBox that is bound to a List<string> in my ViewModel. In the contructor of the ViewModel, I populate this list. I need to handle the case when the user adds a new value to this ComboBox. I saw in the UI for Web docs a mention of the ItemCreated event. I think this is what 'm looking for, but don't have a clue as to how to go about implementing it in the WPF MVVM code. Any clues will be greatly appreciated!!!

Thanks in advance,

Kevin Orcutt
Senior Software Engineer

Wurth Electronics ICS, Inc.
7496 Webster St., Dayton, OH 45414
Tel: 937.415.7700
Toll Free: 877.690.2207
Fax: 937.415.7710
Email: Kevin.Orcutt@we-ics.com
http://www.we-ics.com

ComboBox

answered on 13 Jun 2016

1 answer

163 views

WPF Animation

Hi,

I tried some animations in my WPF application. I need to have a Zoom in animation like given as attached ppt(link) example...
Is this kind of animation possible with Telerik? Please provide help in any cases that how I can be able to achieve this effect. Thanks in advance..

https://onedrive.live.com/redir?resid=61BC36F4F01D37D4!270&authkey=!AIBY84p-LlBmzw0&ithint=file%2cpptx

General Discussions

answered on 13 Jun 2016