How to draw scrollbars on WPF Canvas

Question

I am trying to create a canvas with scroll bars. Can anyone help me give some ideas on how to do this? I have already tried using grid of 1 row and 1 column but due to certain constraints I want to use canvas.

Thanks in advance!

Answer 1

Ok after working with it for sometime I figured out a way. Create a XAML like this

<ScrollViewer>
 <Grid x:Name="drawingGrid" SizeChanged="drawingGrid_SizeChanged">
<Canvas Name="drawingCanvas"> /<Canvas>
</Grid>
</ScrollViewer>

On windowLoad function set the canvas height/width equal to grid height/width. Update the canvas ht/wd:

1. when grid size changes, due to mininmize/maximize.

2. dragging an element beyond the boundaries of canvas or creating a new element too close the edge of canvas

   double dHeight = 220;
   if (drawingCanvas.Height < CurrentPosition.Y + dHeight)
   {
       // increase canvas height
       drawingCanvas.Height += (2 * dHeight);
   }
   

Hope this is of some help. Please share if anyone has any better idea or suggestions to improve this.