Using Image control in WPF to display System.Drawing.Bitmap

Question

How do I assign an in-memory Bitmap object to an Image control in WPF ?

Exact duplicate of http://stackoverflow.com/questions/94456/load-a-wpf-bitmapimage-from-a-system-drawing-bitmap but my answer does not leak HBitmap — Lars Truijens, Jul 13 '09 at 11:55
Does this answer your question? [Load a WPF BitmapImage from a System.Drawing.Bitmap](https://stackoverflow.com/questions/94456/load-a-wpf-bitmapimage-from-a-system-drawing-bitmap) — StayOnTarget, Feb 04 '20 at 17:25

score 86 · Answer 1 · edited Oct 27 '11 at 11:28

86

According to http://khason.net/blog/how-to-use-systemdrawingbitmap-hbitmap-in-wpf/

   [DllImport("gdi32")]
   static extern int DeleteObject(IntPtr o);

   public static BitmapSource loadBitmap(System.Drawing.Bitmap source)
   {
       IntPtr ip = source.GetHbitmap();
       BitmapSource bs = null;
       try
       {
           bs = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(ip, 
              IntPtr.Zero, Int32Rect.Empty, 
              System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions());
       }
       finally
       {
           DeleteObject(ip);
       }

       return bs;
   }

It gets System.Drawing.Bitmap (from WindowsBased) and converts it into BitmapSource, which can be actually used as image source for your Image control in WPF.

image1.Source = YourUtilClass.loadBitmap(SomeBitmap);

edited Oct 27 '11 at 11:28

Community

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answered Jul 13 '09 at 09:51

Lars Truijens

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Thx Lars, but I did much simpler, BitmapImage bmpi = new BitmapImage(); bmpi.BeginInit(); bmpi.StreamSource = new MemoryStream(ByteArray); bmpi.EndInit(); image1.Source = bmpi; – Prashant Cholachagudda Jul 13 '09 at 10:13
4

Great. You can add your sollution as an answer to your own question. – Lars Truijens Jul 13 '09 at 11:58
I do not see a BitmapImage.StreamSource method. Prashant, did you type something wrong? – Patrick Szalapski Oct 13 '09 at 23:22
Or a property, for that matter. – Patrick Szalapski Oct 13 '09 at 23:23
Patrick, see http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.bitmapimage.streamsource.aspx – Lars Truijens Oct 14 '09 at 06:50
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When using unmanaged handles (e.g. HBITMAP) consider using SafeHandles, see http://stackoverflow.com/questions/1546091/wpf-createbitmapsourcefromhbitmap-memory-leak/7035036#7035036 – Jack Ukleja Aug 12 '11 at 02:34
@Lars Truijens Very nice, would never of thought of that. – Oli Apr 04 '12 at 12:29

score 17 · Answer 2 · edited May 23 '17 at 12:34

17

It's easy for disk file, but harder for Bitmap in memory.

System.Drawing.Bitmap bmp;
Image image;
...
MemoryStream ms = new MemoryStream();
bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
ms.Position = 0;
BitmapImage bi = new BitmapImage();
bi.BeginInit();
bi.StreamSource = ms;
bi.EndInit();

image.Source = bi;

Stealed here

edited May 23 '17 at 12:34

Community

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answered Apr 26 '12 at 14:23

Badiboy

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Thx,but the code have not closed the ms.I think you will use http://stackoverflow.com/a/1069509/6116637 – lindexi May 08 '17 at 03:17
@lindexi Even though `MemoryStream` implements `IDisposable`, it does not require to be disposed explicitly since it does not wrap any unmanaged resource. It is like a byte array and will eventually get collected by GC. – kennyzx May 15 '17 at 02:33

score 17 · Accepted Answer · answered Jul 13 '09 at 09:55

17

You can use the Source property of the image. Try this code...

ImageSource imageSource = new BitmapImage(new Uri("C:\\FileName.gif"));

image1.Source = imageSource;

answered Jul 13 '09 at 09:55

2

I have Bitmap object, actully it is generated from a scan device, so I cant refer to any location – Prashant Cholachagudda Jul 13 '09 at 10:11

score 2 · Answer 4 · edited Dec 12 '12 at 22:24

2

I wrote a program with wpf and used Database for showing images and this is my code:

SqlConnection con = new SqlConnection(@"Data Source=HITMAN-PC\MYSQL;
                                      Initial Catalog=Payam;
                                      Integrated Security=True");

SqlDataAdapter da = new SqlDataAdapter("select * from news", con);

DataTable dt = new DataTable();
da.Fill(dt);

string adress = dt.Rows[i]["ImgLink"].ToString();
ImageSource imgsr = new BitmapImage(new Uri(adress));
PnlImg.Source = imgsr;

edited Dec 12 '12 at 22:24

senia

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answered Dec 12 '12 at 22:06

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Good answer, but I would highly recommend wrapping the Sql objects in using statements so they're disposed when you're done using them. – Maurice Reeves Dec 12 '12 at 22:23

Using Image control in WPF to display System.Drawing.Bitmap

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