Questions on UI for WPF Forum

1 answer

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Mail Merge - PDF Export - Watermark problem

Hello all,
I have the following problem when using the mail merge:
If I do not have watermark in the document, MailMerge and Export to PDF performs correctly.
Here is how I do the MailMerge (not full code):

//loop throught documents

do

{

RadDocument currentDocument = document.MailMergeCurrentRecord();

if (currentDocument != null)

{

//freeze images

foreach (var image in currentDocument.EnumerateChildrenOfType<ImageInline>())

image.ImageSource.Freeze();

//Floating images

foreach (var image in currentDocument.EnumerateChildrenOfType<FloatingImageBlock>())

image.ImageInline.ImageSource.Freeze();

lock (baton)

documentQueue.Enqueue(currentDocument);//add new document to a queue for further processing

currentDocument = null;

}

} while (document.MailMergeDataSource.MoveToNext());

and here is how I export to PDF (into a stream):

public static async Task<Stream> ExportToPDF(RadDocument document)

{

PdfFormatProvider provider = new PdfFormatProvider();

Stream output = new MemoryStream();

await StartSTATask(() =>

{

provider.Export(document, output);

});

output.Position = 0;

return output;

}

As I have mentioned, the problem occurs when I have a Watermark in my document. Even though Mail Merge performs correctly, the document crashes on the
provider.Export(document, output) saying that the current thread cannot access object as different thread owns it.

Here is full error report:

at System.Windows.Threading.DispatcherObject.VerifyAccess()

at System.Windows.Media.Imaging.BitmapSource.get_PixelWidth()

at System.Windows.Media.Imaging.WriteableBitmap.InitFromBitmapSource(BitmapSource source)

at Telerik.Windows.Media.Imaging.RadBitmap..ctor(BitmapSource image)

at Telerik.Windows.Documents.FormatProviders.Pdf.PdfDocumentExporter.SetImageAlpha(WatermarkImageSettings imageSettings, Byte alpha)

at Telerik.Windows.Documents.FormatProviders.Pdf.PdfDocumentExporter.DrawWatermark(Header header, SectionLayoutBox sectionBox, PdfContentsWriter writer)

at Telerik.Windows.Documents.FormatProviders.Pdf.PdfDocumentExporter.ExportHeadersAndFooters(SectionLayoutBox sectionBox, PdfContentsWriter writer)

at Telerik.Windows.Documents.FormatProviders.Pdf.PdfDocumentExporter.ExportPage(SectionLayoutBox sectionBox, PdfContentsWriter writer)

at Telerik.Windows.Documents.FormatProviders.Pdf.PdfDocumentExporter.<>c__DisplayClass1.<Export>b__0(PdfContentsWriter contentsWriter)

at Telerik.Windows.Documents.FormatProviders.Pdf.RadPdf.PdfContents.WriteContents(PdfWriter writer)

at Telerik.Windows.Documents.FormatProviders.Pdf.RadPdf.PdfStream.WriteToCore(PdfWriter writer)

at Telerik.Windows.Documents.FormatProviders.Pdf.RadPdf.PdfObject.WriteTo(PdfWriter writer)

at Telerik.Windows.Documents.FormatProviders.Pdf.RadPdf.PdfWriter.WritePdfObject(PdfObject obj)

at Telerik.Windows.Documents.FormatProviders.Pdf.PdfDocumentExporter.Export()

at Telerik.Windows.Documents.FormatProviders.Pdf.PdfFormatProvider.Export(RadDocument document, Stream output)

at IP_DocumentProcessor.MailMerge.IP_MailMerge.<>c__DisplayClass14.<ExportToPDF>b__13() in d:\VB Projects + Silverlight\VS2012APP\IP_DocumentProcessor\IP_DocumentProcessor\MailMerge\IP_MailMerge.cs:line 476

at IP_DocumentProcessor.MailMerge.IP_MailMerge.<>c__DisplayClass1a.<StartSTATask>b__19() in d:\VB Projects + Silverlight\VS2012APP\IP_DocumentProcessor\IP_DocumentProcessor\MailMerge\IP_MailMerge.cs:line 500

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()

at IP_DocumentProcessor.MailMerge.IP_MailMerge.<StartSTATask>d__1c.MoveNext() in d:\VB Projects + Silverlight\VS2012APP\IP_DocumentProcessor\IP_DocumentProcessor\MailMerge\IP_MailMerge.cs:line 510

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at IP_DocumentProcessor.MailMerge.IP_MailMerge.<ExportToPDF>d__16.MoveNext() in d:\VB Projects + Silverlight\VS2012APP\IP_DocumentProcessor\IP_DocumentProcessor\MailMerge\IP_MailMerge.cs:line 474

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()

at IP_DocumentProcessor.MailMerge.IP_MailMerge.<GenerateStreams>d__7.MoveNext() in d:\VB Projects + Silverlight\VS2012APP\IP_DocumentProcessor\IP_DocumentProcessor\MailMerge\IP_MailMerge.cs:line 282

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>b__1(Object state)

at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()

at System.Threading.ThreadPoolWorkQueue.Dispatch()

Your help would be highly appreciated as I don't know how to handle this problem.
Thank you.
Robert

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Hi,

I would like to know how it's possible to dock center a SplitContainer?

Thank's
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8 answers

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Hi,

I looking for a kind of tabular layout.
The idea behind it is that in my data I know Row and Column and I want my diagram to look
something like in the attached images.

And I also need Multiple root items like showed on the second image.

The next thing is that I want to restrict node dragging to the matrix - inclusive position change (like drag drop in a treeview control for an example). But this is "enhanced" - my initial request is to generate the layout from data - just by knowing
a.) Node Position Row, Column
b.) Node connected to List of other Nodes

Is this possible - "out of the box" (or with little effort)?

Thanks
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I like this menu, but it would be nice to have more than eight slice.

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What would constitute a valid copyright message?

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Am I able to build any kind of functioning shortcut menu into the GridView accessible thru a right mouse click?

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Automatic EditMode and CellTemplate

Hi!

When I bind a GridView to an QCV and klick in a cell the cell/row is in edit-mode and I can change the content of the cell. The moment I use a CellTemplate this functionality is gone, no automatic edit-mode, nothing. Here the example which works:

<telerik:GridViewDataColumn DataMemberBinding=

"{Binding Name}"

    UniqueName="BoilerplateName"

    IsGroupable="False"

    Width="200"

Header="Name" />

This one is not working - no edit-mode whatsoever:

<telerik:GridViewDataColumn DataMemberBinding=

"{Binding Name}"

                           UniqueName="BoilerplateName"

                           IsGroupable="False"

                           Width="200"

                           Header="Name">

<telerik:GridViewDataColumn.CellTemplate

<DataTemplate

<TextBox Text=

"{Binding Name, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"

                     AcceptsReturn="True"

                     MaxLength="4000"

                     TextWrapping="Wrap" />

</DataTemplate

</telerik:GridViewDataColumn.CellTemplate

</telerik:GridViewDataColumn>

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8 answers

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in my ribbon, I have added a DropDownButton that contains a ContextMenu, following the example in Telerik documentation.
This works well... until the menu contains a sub menu. In this case, as soon as the sub menu is opened, the menu is not closed when we click outside it, only the sub menu is closed.
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8 answers

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Dynamically Load Carousel and set ItemSource at Runtime

Hi,

I want to know if it's possible to dynamically load the radCarousel and set it's itemsource in C# at runtime?

Basically I have a winform application I am integrating a WPF carousel into. The user will use a drop down selection box to choose which set of data to represent. That selected item will send a variable to the carousel, C# logic will dynamically query a SQL Server database and present the returned data in the carousel as selectable items.

That's the goal anyway. Thanks in advance for your help!

Tony

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answered on 26 Feb 2015