I'm looking for a way to save 3 different charts in one document.

My application calculates data. This data will be shown in 3 different charts ( toolbox --> charts)

So far I've this code:

Code:
01	' Displays a SaveFileDialog so the user can save the Image
02	       ' assigned to Button2.
03	       Dim saveFileDialog1 As New SaveFileDialog()
04	       saveFileDialog1.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif"
05	       saveFileDialog1.Title = "Save an Image File"
06	       saveFileDialog1.ShowDialog()
07	 
08	       ' If the file name is not an empty string open it for saving.
09	       If saveFileDialog1.FileName <> "" Then
10	           ' Saves the Image via a FileStream created by the OpenFile method.
11	           Dim fs As System.IO.FileStream = CType _
12	              (saveFileDialog1.OpenFile(), System.IO.FileStream)
13	           ' Saves the Image in the appropriate ImageFormat based upon the
14	           ' file type selected in the dialog box.
15	           ' NOTE that the FilterIndex property is one-based.
16	           Select Case saveFileDialog1.FilterIndex
17	               Case 1
18	                   Chart1.SaveImage(fs, _
19	                      System.Drawing.Imaging.ImageFormat.Jpeg)
20	 
21	               Case 2
22	                   Chart1.SaveImage(fs, _
23	                      System.Drawing.Imaging.ImageFormat.Bmp)
24	 
25	               Case 3
26	                   Chart1.SaveImage(fs, _
27	                      System.Drawing.Imaging.ImageFormat.Gif)
28	           End Select
However it only saves the image of chart 1. Is there a way i can combine chart 1,2,3 images in one document?

Thanks in advance