Change control from unselected TabItem

[Vlad]

Hi. I have window with button and RadTabControl with 3 TabItem.
Button has click event 
private void BtnPrint_OnClick(object sender, RoutedEventArgs e)
        {
            Random r = new Random();
            var Background = Color.FromArgb((byte)r.Next(255), (byte)r.Next(255), (byte)r.Next(255), (byte)r.Next(255));
            Brush brush = new SolidColorBrush(Background);
            modulCalculationDefect.pipeControl.Background = brush;

            RenderTargetBitmap targetBitmap = new RenderTargetBitmap((int)modulCalculationDefect.pipeControl.ActualWidth,
                    (int)modulCalculationDefect.pipeControl.ActualHeight, 96d, 96d, PixelFormats.Default);
            targetBitmap.Render(modulCalculationDefect.pipeControl);

            BmpBitmapEncoder encoder = new BmpBitmapEncoder();
            encoder.Frames.Add(BitmapFrame.Create(targetBitmap));

            MemoryStream stream = new MemoryStream();
            encoder.Save(stream);
            BitmapImage bmp = new BitmapImage();
            bmp.BeginInit();
            bmp.StreamSource = new MemoryStream(stream.ToArray());
            bmp.EndInit();

            imageControl.Source = bmp;
        }
So when i click button I must change backgroud modulCalculationDefect.pipeControl, make image and view this image in imageControl. This work when select RadTabItem where located modulCalculationDefect.pipeControl. When selected another item image in imageControl doesn't change.
How can I fix that?

[Martin Ivanov]

Hi Vlad,

I am not sure that I fully understand your scenario, this is why I would ask you to elaborate more on your scenario. Can you please answer the following questions:

• Where are you placing the imageControl and the pipeControl?
• What types are those controls?

Also it will be helpful if you can provide me with an isolated project which demonstrates the issue. This will help me in better understanding your case and assist you further.

Thank you in advance for the cooperation.

Regards,
Martin
Telerik

 

 

[Vlad]

Hi Martin. Thank you for answer.
I added file where i placed controls. modulCalculationDefect.pipeControl in Tab1. 
When I select Tab1 and click Button imageControl has image modulCalculationDefect.pipeControl, if I select Tab2, image doesn't reload.

Property IsContentPreserved fix this problem.

[Martin Ivanov]

Hi Vlad,

I am happy to hear that you resolved the issue. Please don't hesitate to contact me again if you need any further assistance.

Regards,
Martin
Telerik