CODEWITHSUNDEEP
silverlightc#-4.0printing
DoctorAV
DoctorAV

Reputation: 1189

Silverlight Multipage Printing

I am implementing silverlight printing using PrintDocument. My UI is generated runtime using XamlReader which parse xaml which I have stored in db.

Here is code:

                        string str = sb.ToString();
                        newUI = XamlReader.Load(sb.ToString()) as FrameworkElement;
                        newUI.DataContext = ReportData;
                        grdPreviewArea.Children.Add(newUI);
                        grdPreviewArea.Height = pageHeight;
                        grdPreviewArea.Width = pageWidth;
                        Grid.SetColumn(newUI, 1);
                        Grid.SetRow(newUI, 1);

Now to print I am setting newUI as e.PageVisual in my print event handle. This works fine if rendered UI is fits single page , but I am not able to print second page if it does not fits single page.

Upvotes: 0

Views: 81

Answers (1)

DNKROZ
DNKROZ

Reputation: 2872

  • First you need to work out how many pages are needed

    Dim pagesNeeded As Integer = Math.Ceiling(gridHeight / pageHeight) //gets number of pages needed

  • Then once the first page has been sent to the printer, you need to move that data out of view and bring the new data into view ready to print. I do this by converting the whole dataset into an image/UI element, i can then adjust Y value accordingly to bring the next set of required data on screen.

    transformGroup.Children.Add(New TranslateTransform() With {.Y = -(pageIndex * pageHeight)})

  • Then once the number of needed pages is reached, tell the printer to stop

        If pagesLeft <= 0 Then
        e.HasMorePages = False
        Exit Sub
    Else
        e.HasMorePages = True
    End If

Or if this is too much work, you can simply just scale all the notes to fit onto screen. Again probably by converting to UI element.

Check out this link for converting to a UI element.

http://www.codeproject.com/Tips/248553/Silverlight-converting-to-image-and-printing-an-UI

Hope this helps

Upvotes: 1

Related Questions