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 ?

Counterattack

Exact duplicate of #94956 but my answer does not leak HBitmap – Beatup

Does this answer your question? Load a WPF BitmapImage from a System.Drawing.Bitmap – Dympha

Answer 1

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

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

image1.Source = imageSource;

Watchband

I have Bitmap object, actully it is generated from a scan device, so I cant refer to any location – Counterattack

Answer 2

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);

Beatup

Thx Lars, but I did much simpler, BitmapImage bmpi = new BitmapImage(); bmpi.BeginInit(); bmpi.StreamSource = new MemoryStream(ByteArray); bmpi.EndInit(); image1.Source = bmpi; – Counterattack

Great. You can add your sollution as an answer to your own question. – Beatup

I do not see a BitmapImage.StreamSource method. Prashant, did you type something wrong? – Bitstock

Or a property, for that matter. – Bitstock

Patrick, see msdn.microsoft.com/en-us/library/… – Beatup

When using unmanaged handles (e.g. HBITMAP) consider using SafeHandles, see #1546591 – Earn

@Lars Truijens Very nice, would never of thought of that. – Intoxicated

Answer 3

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

Hepatic

Thx,but the code have not closed the ms.I think you will use https://mcmap.net/q/116728/-load-a-wpf-bitmapimage-from-a-system-drawing-bitmap – Aindrea

@Aindrea 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. – Actuality

Answer 4

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;

Uppercut

Good answer, but I would highly recommend wrapping the Sql objects in using statements so they're disposed when you're done using them. – Pomade