Questions on UI for WPF Forum

0 answers

78 views

How to create Table from WorkSheet along with styles

Hi

I am trying a following case to export to pdf from a raggridview, with a repeating header on each page.

By refering to some forum queries i could do pdf export with defined column widths to columns and wraps.

For repeating header I am trying to create a RadDocument with a Table as table can do repeat headers on each page.

Can you please help me create tablecells from Worksheet with same style and column widths and fonts?

Thanks & Regards,

Sunil

GridView

asked on 30 Jun 2020

18 answers

622 views

RadGridView duplicates data from ObservableCollection

I have a RadGridView bound to an ObservableCollection. This collection is constantly updated and on the first binding, the grid shows the data correctly. But then when I rebind the collection (through a search button), it duplicates the rows while the underlying collection contains correct data.

It only happens when the LoadData mode is Asynchronous. If I change it to Synchronous, it does not happen.

Besides, on the OnItemSourceChanged I modify the filterDescriptor. I know that Rebinding the collection on the event OnItemSourceChanged is very expensive and it is not an option.

It does not happen when debugging it either. Only in execution time. And it does not happen when putting a Thread.Sleep on the load. That is the reason why I am positive that it is an issue of synchronizing the threads. As the Asynchronous mode loads the data in a different thread while it only shows the ones fitting the grid, it has a thread to show the data on the UI and another to populate it. If we add processing to the OnItemSourceChanged, the thread will not wait (or join) the other (the one displaying the data) and will duplicate it in execution time.

Of course that when debugging it, we will see in the thread stack that there are 2 main threads, one drawing and the other one in wait/join state. As it is a bundled in resource (LoadDataMode="Asynchronous"), I can not override the handlers of the background worker that performs these actions. I can always use another technique to load up the required information asynchronously (like a backgroundworker handling the doWork events and changing the displayed data on the scroll down event, for example; also with paging programatically; restful services; etc). But I wanted to use the Telerik recommended controls.

Is there a way to override the handling of those different threads so that I can light them up and synchronize them on my own? Could there be another solution to this issue?

GridView

answered on 30 Jun 2020

0 answers

85 views

Save Collapsed ContainerShape

hello,

i'm in trouble when saved collapsed ContainerShape is loaded.

A single ContainerShape doesn't matter, but the problem is that ContainerShape in collapsed ContainerShape is always loaded collapsed.

It doesn't matter inner ContainerShape's collapse saved state.

it cause a situation when parent collapsed ContainerShape's property makes false, child ContainerShape' collapsed is always true.

Diagram

asked on 30 Jun 2020

5 answers

265 views

Remove the single selection tag template

Hi Team,

I would like to disabled the selected item template that we display when a single item is selected and behave it like combo box where clear button (x) is placed at the end.

Thanks

MultiColumnComboBox

answered on 29 Jun 2020

3 answers

102 views

Tab Navigation of Form Fields

Hi

In the WPF PDFViewer, there doesn't currently appear to be a way to tab (or use any other keyboard navigation) between form fields.

I see that this has been on the feedback portal for 2 years: https://feedback.telerik.com/wpf/1354935-pdfviewer-support-for-tab-navigation-between-form-fields

Is there a way to work around this limitation and allow clients to use keyboard navigation between fields?

Thanks

Guy

PDFViewer

answered on 29 Jun 2020

3 answers

275 views

RichTextBox.Print() customize to set File Path?

Hello,

Thank you for your good control and service.

As I know RichTextBox still doesn`t support export to Pdf with Track Changes

By this reason I try to use RichTextBox.Print() function to export content with Track Changes to pdf ("Microsoft Print to Pdf" or any analog)

The problem is just I can`t set exact filename path or at least propose recommended file name to user, before print. Here is my code, which is like your RichTextBox/CustomizingPrint from GitHub:

(Editor is my RichTextBox)

private void Print_Click(object sender, RoutedEventArgs e)

{

RadDocument document = Editor.Document;

PrintSettings settings = new PrintSettings()

{

DocumentName = "Output_20200625.pdf", // Nope, I need Path to save

PrintMode = PrintMode.Native,

PrintScaling = PrintScaling.None,

UseDefaultPrinter = true

};

if (document != null)

{

PrintDialog printDialog = new PrintDialog();

PrintQueue printQueue = FindPrintQueueByName("pdf");

if (printQueue == null)

{

printQueue = printDialog.PrintQueue;

}

int pagesCount = document.FirstLayoutBox.Children.Count;

printQueue.DefaultPrintTicket.PageMediaSize = new PageMediaSize(PageMediaSizeName.ISODLEnvelope);

printDialog.PrintQueue = printQueue;

printDialog.MinPage = 1;

printDialog.MaxPage = (uint)pagesCount;

//DocumentPrintPresenter documentPrintPresenter = new DocumentPrintPresenter(settings); // RadDocument Print Document?

Editor.Print(printDialog, settings);

}

private PrintQueue FindPrintQueueByName(string name)

{

PrintServer server = new PrintServer();

foreach (PrintQueue queue in server.GetPrintQueues(new EnumeratedPrintQueueTypes[] { EnumeratedPrintQueueTypes.Connections, EnumeratedPrintQueueTypes.Local }))

{

if (queue.Name.ToLowerInvariant().Contains(name))

{

return queue;

}

return null;

}

Is any idea how can I make it, or any alternate method? May be Xps, then Pdf?

Thank you!

RichTextBox

answered on 29 Jun 2020

3 answers

136 views

Load an arabic DOCX files in RichTextBox that integrate with RadBooK

Hi,
I load an arabic DOCX files in RichTextBox that integrate with RadBook. But when it loaded, it show all RTL Text in LTR Format. How i can fix it?

Book

answered on 27 Jun 2020

1 answer

345 views

Problem with Border when lost focus

Hi,

I have a problem with a editable gridview.

The colums with dateticker and radcombobox have a cyan border.

It appear when I am editing and a mouse leave this field.

Xaml :

<telerik:RadGridView

x:Name="ModifiableItems"

Grid.Row="0"

RowHeight="45"

Margin="0,0,0,15"

GridLinesVisibility="Horizontal"

CanUserSortColumns="False"

CanUserFreezeColumns="False"

IsReadOnly="false"

HorizontalAlignment="Left"

VerticalAlignment="Stretch"

IsFilteringAllowed="True"

HorizontalContentAlignment="Left"

RowIndicatorVisibility="Collapsed"

ItemsSource="{Binding ModifiableItems, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"

SelectionMode="Single" >

<telerikctrl:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding String}" Width="*" EditorStyle="{StaticResource TextBoxRadGridViewStyle}" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding Int}" Width="*" EditorStyle="{StaticResource TextBoxRadGridViewStyle}"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Bool}" Width="*"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Double}" Width="*" EditorStyle="{StaticResource TextBoxRadGridViewStyle}"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Decimal}" Width="*" EditorStyle="{StaticResource TextBoxRadGridViewStyle}" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding DateTime, StringFormat=dd/MM/yyyy}" Width="*" />

<telerik:GridViewComboBoxColumn ItemsSource="{Binding ObservableCollection}" DataMemberBinding="{Binding Item}" DisplayMemberPath="Label" Width="*" EditorStyle="{StaticResource RadComboBoxRadGridViewStyle}"/>

</telerikctrl:RadGridView.Columns>

</telerik:RadGridView>

You can see in attachement, a sample

GridView

answered on 26 Jun 2020

3 answers

173 views

Scrollbar in RadGridView does not use theme

I use NoXaml binaries and use the Expression dark theme forlittle test program.

The MainWindow and the RadGridView use the theme. But the Scrollbar does not use the theme.

Do you have any idea why it is notstyled.

Best regards,

Ralf

GridView

answered on 26 Jun 2020

1 answer

145 views

Expandable object editable in Property Grid

Hello,

I'd like to edit an expandable object in Property Grid. For instance, when I change the value in one child property, it also changes the result in the parent property, and vice-versa.

ParentProperty (X value); (Y value); (Z value)

ChildXProperty (X value)

ChildYProperty (Y value)

ChildZProperty (Z value)

Let's say ChildX and ChildY are Double, and ChildZ is Integer. Thank you for help.

PropertyGrid