Hi,
I'm having a lot of difficulties in understanding how to create the layout that I am looking for with RadDocking. I have read the documentation and have looked at the examples however I am still having difficulties.
https://docs.telerik.com/devtools/wpf/controls/raddocking/getting-started/getting-started2#adding-radpane
Is it possible for someone to help me understand how to create the layout attached in my wireframe?
I am having a hard time getting tabs to be on the left, how to size things with RadSplitContainer and understanding the need of DocumentHost.
Thank you.
David
Hi,
We are using the RadMap control (v. 4.0.30319) in a MVVM WPF project .
In some cases we encounter an exception on the AsyncShapeFileReader while calling ReadAsync()
Exception Message: collection was modified; enumeration operation may not execute
Telerik.windows.controls.Map.MapShapeDataVirtualizationSource.QueryItems ( line 440)
I thought it was a cross-threading problem and inserted some changes in my code :
- calling this.Dispatcher.Invoke((Action)(() => AsyncShapeFileReaderObj. ReadAsync() ));
- using async/ await
but both changes did not solved the problem and the exception still rize.
what could be the problem? Do you have another idea how can i solved it?
The Main thread is calling the ReadAsync() and the other threads that i could see are background workers of Telerik's Map ...
Thanks,
Tali

Hello
I have complex class like this:
class person
{
string name;
car Car;
}
class car
{
string model;
string number;
}
////////////////////////
ObservableCollection<person> persons = getAllPerson() ;
mainDG.ItemSource = persons;
////////////////////////
How can I bind it to my RadgridView?
<telerik:RadGridView x:Name="mainDG" Margin="259,0,5,5" AutoGenerateColumns="False" >
<telerik:RadGridView.Columns>
<telerik:GridViewDataColumn Header="Car number" DataMemberBinding="{Binding Car.number}"/>//How can I bind it?
</telerik:RadGridView.Columns>
</telerik:RadGridView>
Hello Telerik,
On my project, I have a RadDiagram with some shapes, and inside, text is defined.
I need to export this RadDiagram to a PDF File > I create a Bitmap Image from the RadDiagram, and insert this image in the PDF file.
However, texts in the PDF should be selectables. So, before the export, I hide all of texts, and I write them directly inside the PDF after it generation.
From a Textblock, I save primordial informations, and hide the text :
Dim ptb As New ParsedTextBlock(tb.Name, tb.Text, tb.ActualWidth, tb.ActualHeight, rotation, CType(tb.HorizontalAlignment, Windows.Forms.HorizontalAlignment), tb.FontSize, tb.FontStyle, tb.FontFamily, tb.Foreground, tb.FontStretch, tb.FontWeight, tb.Background, tb.TransformToAncestor(diag).Transform(New Windows.Point(0, 0)))
tb.Visibility = Windows.Visibility.Collapsed
ParsedTextBlock is a custom class to store some properties.
After, I have some methods to export Textblock :
Public Sub ExportSummaryDiagTextBlocks(diag As RadDiagram, vector As Windows.Vector) Dim diagItems As List(Of RadDiagramItem) = diag.Items.Select(Function(i) diag.ContainerGenerator.ContainerFromItem(i)).OrderBy(Function(c) c.ZIndex).ToList() Dim diagShapes As List(Of RadDiagramShape) = diagItems.OfType(Of RadDiagramShape).ToList() Dim vectorFromPdfOrigin As New Windows.Vector(40, 70) '40,70 is some fune tuning and should be modified if pageSize / layout is modified Dim w As Single = ReportPageSize.GetWidth Dim wRatioDiag As Single = WIDTH_RATIO_SUMMARY_FOR_DIAG_IMG Dim legacyRectRatio As Double = Rect_Summary.Width / Rect_Summary.Height Dim rectDiagSummary As New Geom.Rectangle(CSng(vectorFromPdfOrigin.X), CSng(vectorFromPdfOrigin.Y), CSng(w * wRatioDiag), CSng(w * wRatioDiag / legacyRectRatio)) Dim windowsRectDiagSummary As New Windows.Rect(0, 0, CSng(w * wRatioDiag), CSng(w * wRatioDiag / legacyRectRatio)) Dim wRatioNewRectVersLegRect As Double = rectDiagSummary.GetWidth / Rect_Summary.Width Me._ptb.ForEach(Sub(ptb) ExportTextBlock(ptb, diag, Rect_Summary, rectDiagSummary, vector, New Windows.Vector(40, 70)))End SubMe._ptb is a list of ParsedTextBlock.
Private Sub ExportTextBlock(ptb As ParsedTextBlock, diag As RadDiagram, diagRect As Windows.Rect, pdfRect As Geom.Rectangle, transformVector As Windows.Vector, vectorFromPdfOrigin As Windows.Vector) Dim p As Windows.Point = CalculateCoordForExport(diag, ptb, diagRect, pdfRect, transformVector, vectorFromPdfOrigin) Dim font As PdfFont = PdfFontFactory.CreateRegisteredFont(ptb.FontFamily.ToString(), PdfEncodings.IDENTITY_H, True, FontHelper.ConvertWeightToPdfStyleInteger(ptb.FontWeight, (ptb.FontStyle = Windows.FontStyles.Italic))) Dim para As Paragraph = New Paragraph(ptb.Text).SetFont(font) Dim wRatioNewRectVersLegRect As Double = pdfRect.GetWidth / diagRect.Width Dim fontSize As Single = CSng(Math.Round(ptb.FontSize * wRatioNewRectVersLegRect, 1)) If fontSize < 3 Then fontSize = 3 Dim w As Double = ptb.Width * wRatioNewRectVersLegRect para.SetPadding(0) para.SetMargin(0) para.SetFixedPosition(Convert.ToSingle(p.X), Convert.ToSingle(p.Y), CSng(w)) para.SetFontSize(fontSize) 'para.SetFontSize(CSng(ptb.FontSize)) para.SetHorizontalAlignment(iText.Layout.Properties.HorizontalAlignment.CENTER) para.SetVerticalAlignment(VerticalAlignment.MIDDLE) para.SetBackgroundColor(ColorHelper.ConvertBrushToDeviceRgb(ptb.Background)) Dim rot As Double = ptb.Rotation ' GetRotation(tb) If rot <> 0 Then 'Dim rot_radian As Double = ((-rot + 360) Mod 360) * Math.PI / 180.0 ' I multiply because WPF is counterclockwise but PDF is clockwise Dim rot_radian As Double = -(rot * (Math.PI / 180)) para.SetRotationAngle(rot_radian) End If _doc.Add(para)End Sub
And :
Private Function CalculateCoordForExport(diag As RadDiagram, tb As ParsedTextBlock, diagRect As Windows.Rect, pdfRect As Geom.Rectangle, transformVector As Windows.Vector, vectorFromPdfOrigin As Windows.Vector) As Windows.Point Dim oldPoint As Windows.Point = tb.Coordinates ' tb.TransformToAncestor(diag).Transform(New Windows.Point(0, 0)) oldPoint = New Windows.Point(oldPoint.X - transformVector.X, oldPoint.Y - transformVector.Y) '2 appliquer le crop Dim pointAfterCrop As Windows.Point = CoordinateHelper.ApplyCrop(oldPoint, New Windows.Point(Me.Rect_Summary.X, Me.Rect_Summary.Y)) '3 appliquer le resizing Dim pointAfterResising As Windows.Point = CoordinateHelper.CalculatePointAfterResizing(pointAfterCrop, diagRect, pdfRect) '4 appliquer le Y reverse. car l'origine du raddiagram est en haut à gauche tandis que pour iText, c'est en bas à gauche Dim pointAfterReversingY As Windows.Point = New Windows.Point(pointAfterResising.X, pdfRect.GetHeight - pointAfterResising.Y) '5 appliquer decalage nouvel origine Dim pointAfterNewOrigin As Windows.Point = Windows.Vector.Add(vectorFromPdfOrigin, pointAfterReversingY) '6 soustraire à Y la Height de la shape car l'origine du raddiagram est en haut à gauche tandis que pour iText, c'est en bas à gauche Dim heightRatio As Double = pdfRect.GetHeight / diagRect.Height Dim pointAfterMinusHeight As New Windows.Point(pointAfterNewOrigin.X, pointAfterNewOrigin.Y - (tb.Height * heightRatio)) Return pointAfterMinusHeightEnd Function
With these methods, for a text not rotated, it's OK. But the problem is when the text is rotated.
You can see the Origin screen, this one is the RadDiagram before exportation, and the Result screen, this one is the result inside the PDF.
And depending to the rotation angle, the result for rotated text is so bad.
My excpectation is that the position from the TextBlock is bad (calculation is false ?)...
I hope you can help me to write at the good place a rotated TextBlock.
Thank you.
I'm getting a parameter count mismatch, I narrowed it down to an indexed property on the viewmodel that the data form is bound to, but not even using.
System.Reflection.RuntimeMethodInfo.InvokeArgumentsCheck(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
System.Reflection.RuntimePropertyInfo.GetValue(Object obj, BindingFlags invokeAttr, Binder binder, Object[] index, CultureInfo culture)
System.Reflection.RuntimePropertyInfo.GetValue(Object obj, Object[] index)
Telerik.Windows.Controls.RadDataForm.OnCurrentItemPropertyChanged(Object sender, String propertyName)
Telerik.Windows.Controls.RadDataForm.OnCurrentItemPropertyChanged(Object sender, PropertyChangedEventArgs e)
System.ComponentModel.PropertyChangedEventHandler.Invoke(Object sender, PropertyChangedEventArgs e)
I saw in the forum other references to this error and some with very similar stack traces. Most said a fix would be in the next version. Is there something I am doing wrong, or is this just a bug in the data form? Is there a way I can override OnCurrentItemPropertyChanged and handle it myself (or skip it in this case, of not actually even using the parameter).
Hi Progress Telerik,
I would like to change the look of the Relation Arrow between tasks. Is there any way to style the relation arrow in GanttView? Please provide the solution to achieve the same.
Thanks and Regards,
Muhammad Azhar Shah
MSC Technology
Here's the behaviour i'm looking for:
With focus on my combobox, I press 'n' once. -> The first item in the list starting with 'n' is selected.
I press 'n' again. -> The second 'n' item in the list is selected.
-------
Is there a combination of flags that causes this behavior?
If not, has anybody already written the event handler to make it work?
Cheers