Question

i am saving the image in database. .. but how to retrieve that image from database .. when i try to use system.drawing .. it shows an error .. some of ppl saying i can’t use system.drwaing in wpf .. not even dll file ..

my code is

private void btnShow_Click(object sender, RoutedEventArgs e)
{
       DataTable dt2 =  reqBll.SelectImage().Tables[0];
       byte[] data = (byte[])dt2.Rows[0][1];
       MemoryStream strm = new MemoryStream();
       strm.Write(data, 0, data.Length);
       strm.Position = 0;
       System.Drawing.Image img = System.Drawing.Image.FromStream(strm);
       BitmapImage bi = new BitmapImage();
       bi.BeginInit();
       MemoryStream ms = new MemoryStream();
       img.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);
       ms.Seek(0, SeekOrigin.Begin);
       bi.StreamSource = ms;
       bi.EndInit();
       ImgBox.Source = bi;
    }

what to do now?

i used the system.drawing.dll .. now i can use system.drawing.bitmap .. but after using it shows an error at System.Drawing.Image.FromStream(strm);

error:- argument exception was unhandled by user code

Parameter is not valid.

Answer 1

You can use the classes in the System.Drawing namespace, but you will have to add a reference to the assembly containing the class you’re interested in, by right clicking on the project, and choosing the “Add Reference…” option