Questions on UI for WPF Forum

4 answers

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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

190 views

[Solved] 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

138 views

[Solved] 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

194 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

3 answers

200 views

WPF form as Editor from PropertyGrid

Hi,

I have WPF Form which has to be invoked as editor from RadPropertyGrid and here another difficult thing is I have to send input to the constructor of this form.In winform using UITypeEditor inherited class we have created another editor and used it.But in RadPropertyGrid how to achieve this??

Regards,

Nagasree.

PropertyGrid

answered on 20 Sep 2016

1 answer

266 views

[Solved] Customize Modal dialog shown in PropertyGrid editor

Hi,

I have to customize the modal dialog shown when propertygrid editor attribute editor style value is 'Modal'. I don't want to show user Minimize and Maximize buttons of the window,I don't want to allow user to resize the dialog.I want to show form name and Icon for the form of my own.

How to achieve this??

Regards,

Nagasree.

PropertyGrid

answered on 20 Sep 2016

1 answer

171 views

Group manual sorting

I use ColumnGroupDescriptor to group the GrieView

<telerik:RadGridView.GroupDescriptors>
<telerik:ColumnGroupDescriptor x:Name="columnGroupDescriptor" Column="{Binding Columns[\ContactTitleWithConverter\], ElementName=ESColumnGrid}" SortDirection="Descending"/>
</telerik:RadGridView.GroupDescriptors>

the group sort is according to the binding field Ascending or Descending

but my group is constant for example a,b,c

Is any way to manual sort the group for example as b c a

GridView

answered on 20 Sep 2016

15 answers

511 views

[Solved] UI Type editor with a popup window

In my project some properties of my item could not be set in usual way. these are complicated types which have to set in a customized popup window. this behavior simply could be done by UI Type Editors in .net but it seems the radpropertygrid does not support the EditorAttribute's Component Model. This is exactly what I'm looking for but I couldn't find any similar approach for wpf and rad controls after hours of searching. I appreciate it if someone give me a hint.

Thanks in Advance

PropertyGrid

answered on 20 Sep 2016

1 answer

202 views

Styling the text within a DataFormDataField

I've got a series of DataFormDataFields, and I want the text within one of the boxes (if generated) to call a function if it's clicked once. When I attempt to style the text, I lose the textbox itself. All I want is for the DataMemberBinding to be blue and have an underline so it looks like a hyperlink almost. Here's what I'm trying:

<telerik:DataFormDataField x:Name="Number"

Label="Number"

LabelPosition="Above"

Foreground="{DynamicResource StandardForeground}"

Grid.Row="1"

Margin="0"

IsReadOnly="True"

Mode="ReadOnly"

Padding="2"

DataMemberBinding=

"{Binding DataContext.Number, Mode=OneWay, RelativeSource={RelativeSource AncestorType=UserControl}, UpdateSourceTrigger=PropertyChanged}"

Template="{DynamicResource HyperlinkNumber}"/>

<ControlTemplate x:Key="HyperlinkNumber" TargetType="{x:Type telerik:DataFormDataField}">

<Grid x:Name="PART_DataFormDataFieldGrid" Margin="2">

<Grid.ColumnDefinitions>

<ColumnDefinition/>

</Grid.ColumnDefinitions>

<Grid.RowDefinitions>

<RowDefinition/>

</Grid.RowDefinitions>

<ContentControl x:Name="PART_Label" Grid.Row="0" Grid.Column="0" Content="Number" Foreground="{DynamicResource StandardForeground}" Margin="5,0,0,2"/>

<ContentControl x:Name="PART_FieldsContentPresenter" Grid.Row="1" Grid.Column="0" Content=

"{Binding DataContext.Number, Mode=OneWay, RelativeSource={RelativeSource AncestorType=UserControl}, UpdateSourceTrigger=PropertyChanged}"

Margin="2" Foreground="Blue"/>

</Grid>

</ControlTemplate>

Once I hit this point, the textbox looking element disappears so I haven't even tried getting the underline or making the element clickable. Is there some additional content control that will make the box appear? Thanks.

DataForm

answered on 20 Sep 2016

3 answers

211 views

[Solved] GridViewCheckBoxColumn Hides Row Selection Color

When one or more rows are selected in a RadGridView, their cell backgrounds change to (by default) a pale orange color, with gradation I think. But, when this happens, the backgrounds of those cells of the selected rows that are in GridViewCheckBoxColumns remain white. I want to show the row selection color in the GridViewCheckBoxColumn cells, to make them consistent with the other cells in the selected rows.

I think the problem is that the embedded CheckBox completely fills the cell, obscuring the cell background proper. If that is the case, then perhaps a solution would be to set the CheckBox's own background to transparent, so that the underlying cell color changes (when the row is selected and deselected) would be visible.

If all that is true, then what I specifically want to know is how to set the background color of the embedded CheckBox in every cell of every GridViewCheckBoxColumn in the grid to transparent when the grid is shown.

GridView

answered on 20 Sep 2016