Questions on UI for WPF Forum

6 answers

266 views

How to use GridView with VirtualQueryableCollectionView for growing datasource?

I'm trying to use RadGridView with VirtualQueryableCollectionView to display data from database.

The data is very large and it's growing in real time, let's say there are more than 25 rows will be added into database every second. And I want to refresh RadGridView to show real time data.

How can I do that? Is there any example?

Thanks very much!

GridView

answered on 21 Sep 2016

3 answers

241 views

Custom Editor Which used to show data

Hi,

Iam new to RadPropertyGrid. I want to use Custom Editor which can be used from propertygrid as modal dialog similar to UITYPE editor inherited class in Winforms or "ITypeEditor" in Xceed WPF related property Grid.

Is there any similar support from telerik side for similar requirement??

Regards,

Nagasree.

PropertyGrid

answered on 21 Sep 2016

1 answer

93 views

Event for when user selects a rating

How does one respond to the user (not a binding or background setting of the rating) setting a rating? I can't find any event that fires ONLY when the user selects a rating and I would have assumed this is a pretty standard requirement.

Rating

answered on 21 Sep 2016

1 answer

87 views

How to add map which deployed on my own server through LAN

i m developing a window application. In which i m using the map control of WPF control, i want to access the map which is deployed in my own map server(i m using openstreetmap) and my system is connected with that server via LAN.

How can i add this Map in the map control.Please help

Thanks for advance.

Map

answered on 21 Sep 2016

6 answers

152 views

Strange Issue with Office2016 theme

I'm just update to 2016 R3 and apply Office2016 Theme,

when I run project it's all ok, but in design mode I don't see controls.

WE a passed from Office2013 theme to Office2016 them, I have to change something?

Installer and Visual Studio Extensions

answered on 20 Sep 2016

1 answer

209 views

Periodically updating column values

Hello,

I have a scenario with RadGridView where I want to display the value of a continuously changing data point (eg DateTime.Now) in one of the columns. I want the UI to be refreshed with the latest value periodically (once every second for example).

My current solution is to periodically iterate through each item the ItemsSource and fire INotifyPropertyChanged event for the particular property that requires refresh. This works but there is a noticeable performance impact on the UI thread when the values are updated.

My question is, does RadGridView have any support for updating an entire column on a periodic timer, rather than me having to iterate through all the rows and notify manually? If not can such support be added in the future?

GridView

answered on 20 Sep 2016

4 answers

2.0K+ views

The property 'Id' is part of the object's key information and cannot be modified.

In my application I have a RadGridView and a Data Form. If I change the group or type of the DocumentTitle on the CombBox in Data Form, I get the following error message:

"The property 'Id' is part of the object's key information and cannot be modified."

XAML-Code (DataGrid):

01.<telerik:RadEntityFrameworkDataSource Name="DocumentTitlesDataSource" QueryName="DocumentTitles">

02. </telerik:RadEntityFrameworkDataSource>

03.

04. <telerik:RadGridView x:Name="Entries" Grid.Row="1"

05. ItemsSource="{Binding DataView, ElementName=DocumentTitlesDataSource}"

06. SelectedItem="{Binding DataView.CurrentItem, Mode=OneWay, ElementName=DocumentTitlesDataSource}"

07. SelectionMode="Single"

08. IsReadOnly="True"

09. AutoGenerateColumns="False"

10. IsSynchronizedWithCurrentItem="True"

11. CanUserDeleteRows="False"

12. CanUserFreezeColumns="False"

13. CanUserInsertRows="False"

14. CanUserReorderColumns="False"

15. CanUserResizeColumns="False"

16. CanUserSortColumns="False"

17. CanUserSortGroups="False"

18. IsFilteringAllowed="False"

19. ShowGroupPanel="False"

20. ShowColumnHeaders="False" SelectionChanging="Entries_SelectionChanging">

21. <telerik:RadGridView.Columns>

22. <telerik:GridViewDataColumn DataMemberBinding="{Binding Id}" Header="Id" Width="20" IsVisible="False"/>

23. <telerik:GridViewDataColumn DataMemberBinding="{Binding User.Id}" Header="Benutzer" Width="10" IsVisible="False"/>

24. <telerik:GridViewDataColumn DataMemberBinding="{Binding Computer}" Header="Computer" Width="10" IsVisible="False"/>

25. <telerik:GridViewDataColumn DataMemberBinding="{Binding Name}" Header="Dokumententitel" Width="*"/>

26. <telerik:GridViewDataColumn DataMemberBinding="{Binding Group.Id}" Header="Dokumentengruppe" Width="200"/>

27. <telerik:GridViewComboBoxColumn x:Name="cbxDocumentTitleGroup" DataMemberBinding="{Binding Group.Id}"

28. DisplayMemberPath="Name"

29. SelectedValueMemberPath="Id"

30. Header="Dokumentengruppe"

31. Width="100"/>

32. <telerik:GridViewComboBoxColumn x:Name="cbxDocumentTitleType" DataMemberBinding="{Binding Type.Id}"

33. DisplayMemberPath="Name"

34. SelectedValueMemberPath="Id"

35. Header="Dokumententyp"

36. Width="100" />

37. <telerik:GridViewDataColumn DataMemberBinding="{Binding System}" Header="System" Width="10" IsVisible="False"/>

38. <telerik:GridViewDataColumn DataMemberBinding="{Binding Locked}" Header="Gesperrt" Width="10" IsVisible="False"/>

39. </telerik:RadGridView.Columns>

40. </telerik:RadGridView>

XAML-Code (DataForm):

01.<Grid.Resources>

02. <DataTemplate x:Key="WriteTemplate">

03. <Grid>

04. <Grid.ColumnDefinitions>

05. <ColumnDefinition Width="150"></ColumnDefinition>

06. <ColumnDefinition Width="*"></ColumnDefinition>

07. </Grid.ColumnDefinitions>

08. <Grid.RowDefinitions>

09. <RowDefinition></RowDefinition>

10. <RowDefinition></RowDefinition>

11. <RowDefinition></RowDefinition>

12. <RowDefinition></RowDefinition>

13. <RowDefinition></RowDefinition>

14. </Grid.RowDefinitions>

15. <Label Grid.Row="0" Grid.Column ="0" Margin="0,5,0,0">Dokumententitel:</Label>

16. <Label Grid.Row="1" Grid.Column ="0" Margin="0,5,0,0">Dokumentengruppe:</Label>

17. <Label Grid.Row="2" Grid.Column ="0" Margin="0,5,0,0">Dokumententyp:</Label>

18. <Label Grid.Row="3" Grid.Column ="0" Margin="0,5,0,0">Gesperrt:</Label>

19. <Label Grid.Row="4" Grid.Column ="0" Margin="0,5,0,0">Systemeintrag:</Label>

20. <telerik:DataFormDataField Grid.Row="0" Grid.Column ="1" DataMemberBinding="{Binding Name , Mode=TwoWay}" HorizontalAlignment="Stretch" LabelPosition="Above" Margin="0,5,0,0"/>

21. <telerik:DataFormComboBoxField Grid.Row="1" Grid.Column="1" HorizontalAlignment="Stretch" LabelPosition="Above" Margin="0,5,0,0"

22. ItemsSource="{Binding ItemsSource, ElementName=cbxDocumentTitleGroup, Mode=TwoWay}"

23. DataMemberBinding="{Binding Group.Id}"

24. DisplayMemberPath="Name"

25. SelectedValuePath="Id"

26. SelectedIndex="{Binding Group}"/>

27. <telerik:DataFormComboBoxField Grid.Row="2" Grid.Column="1" HorizontalAlignment="Stretch" LabelPosition="Above" Margin="0,5,0,0"

28. ItemsSource="{Binding ItemsSource, ElementName=cbxDocumentTitleType}"

29. DataMemberBinding="{Binding Type.Id}"

30. DisplayMemberPath="Name"

31. SelectedValuePath="Id"

32. SelectedIndex="{Binding Type}"/>

33. <telerik:DataFormCheckBoxField Grid.Row="3" Grid.Column ="1" DataMemberBinding="{Binding Locked , Mode=TwoWay}" HorizontalAlignment="Stretch" LabelPosition="Above" Margin="0,5,0,0"/>

34. <telerik:DataFormCheckBoxField Grid.Row="4" Grid.Column ="1" IsReadOnly="True" DataMemberBinding="{Binding System , Mode=TwoWay}" HorizontalAlignment="Stretch" LabelPosition="Above" Margin="0,5,0,0"/>

35. </Grid>

36. </DataTemplate>

37. </Grid.Resources>

38.

39. <telerik:RadDataForm x:Name="EntryDetails" Grid.Row="2" Header="Dokumententitel"

40. CommandButtonsVisibility="Cancel, Commit" AutoGenerateFields="False" AutoCommit="False"

41. EditEnding="EntryDetails_EditEnding" ValidatingItem="EntryDetails_ValidatingItem" EditEnded="EntryDetails_EditEnded"

42. ReadOnlyTemplate="{StaticResource ReadTemplate}"

43. EditTemplate="{StaticResource WriteTemplate}"

44. NewItemTemplate="{StaticResource WriteTemplate}"

45. ItemsSource="{Binding DataView, ElementName=DocumentTitlesDataSource}"/>

C# Code:

01.public DocimpDocumentTitles(VIMANTO.Environment My)

02. {

03. InitializeComponent();

04. my = My;

05. db.Database.Connection.ConnectionString = my.CurrentConnection.GetSqlConntectionString();

06. DocumentTitlesDataSource.DbContext = db;

07.

08. ObservableCollection<CatalogEntry> documentTitleGroups = new ObservableCollection<CatalogEntry>();

09. ObservableCollection<CatalogEntry> documentTitleTypes = new ObservableCollection<CatalogEntry>();

10.

11.

documentTitleGroups = Database.Views.CatalogViews.GetCatalogEntries(my.CurrentConnection, VIMANTO.Database.Views.CatalogViews.GetCatalog(my.CurrentConnection, "Dokumentengruppen").Id, true);

12. cbxDocumentTitleGroup.ItemsSource = documentTitleGroups;

13.

14.

documentTitleTypes = Database.Views.CatalogViews.GetCatalogEntries(my.CurrentConnection, VIMANTO.Database.Views.CatalogViews.GetCatalog(my.CurrentConnection, "Dokumententypen").Id, true);

15. cbxDocumentTitleType.ItemsSource = documentTitleTypes;

16. }

EntityFrameworkDataSource

answered on 20 Sep 2016

1 answer

171 views

Change Button Locations/Orders

Hi,

I have a Wizard that uses the Back, Next, Finish, and Cancel buttons.

I was wondering if there is a way to have the Cancel button displayed on the bottom-left side of the button area? I am trying to get it to a similar location as the Help button.Currently, all 4 buttons are displayed on the bottom-right side of the button area, and I was hoping we could modify that.

If this is not possible, is there a way to change the order they appear in? As it stands, the buttons are always displayed in Back-Next-Finish-Cancel order, and Cancel-Back-Next-Finish order would be an acceptable compromise.

Take care,
-Thanos

Wizard

answered on 20 Sep 2016

3 answers

122 views

Embedded Controls Behave Improperly

Hello,

I have a Wizard that has 3 pages. Each page has a ListBox with items for the user to select.

My problem is that when the user makes the selections on the first page's Listbox then clicks "Next" to go to page 2, the first page's ListBox's SelectedItems collection becomes empty (instead of being populated with the items the user selected on the first page). However, when I go back to page 1, the ListBox's SelectedItems collection now contains what the user selected.

Does the Wizard do something behind the scenes to the contents of the pages? (Perhaps to conserve memory, etc.) If so, is there a way to disable this?

Thanks,
-Thanos

Wizard

answered on 20 Sep 2016

5 answers

177 views

how to show editor as complete row in the property grid

Hi,

I want to show my user control Editor as complete row in the property grid without display name column in the row. In the attached image I have shown what I am getting now. I want to show only Color editor once we open color group with out showing again color as display name in the row.How to achieve it??

PropertyGrid

answered on 20 Sep 2016