Textblock doesnt get updated when rendered in memory?
- by veechi
I have a text block which as part of a custom control.I added the custom control as a child of grid which in turn is added as child of a Canvas.All of these contorl are instantiated in memory and are not rendered on the UI.When I update the value of the TextBlock and emboss the canvas on an image, the updated value doesnt appear on the embossed image.Here is the code snippet:-
System.Windows.Controls.Canvas embossCanvas = new System.Windows.Controls.Canvas();
System.Windows.Controls.Grid grid = new Grid();
MyControl myctrl= new MyControl();
int wd = (int)myctrl.ActualWidth;
int ht = (int)myctrl.ActualHeight;
embossCanvas.Width = wd;
embossCanvas.Height = ht;
grid.Children.Add(myctrl);
embossCanvas.Children.Add(grid);
myctrl.txtBlk.UpdateLayout();
grid.UpdateLayout();
embossCanvas.Measure(new System.Windows.Size(embossCanvas.Width, embossCanvas.Height));
embossCanvas.Arrange(new System.Windows.Rect(0, 0, embossCanvas.Width, (int)embossCanvas.Height));
embossCanvas.UpdateLayout();
RenderTargetBitmap renderBmp = new RenderTargetBitmap(wd, ht, 96, 96, System.Windows.Media.PixelFormats.Default);
renderBmp.Render(embossCanvas);
