System.Diagnostics.Process.Sta...

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C#

I downloaded a JpegViewer program. I tested it by typing JpegViewer.exe file.jpg and it works fine. My problem is, when I attempt to call it from my C# form app, it calls the standard MS Paint program instead of the Jpegviewer. Can someone please explain what is happening and how I can resolve this issue?

Thank you.

if (e.RowIndex < 0)
              return;
          int rowIndex = e.RowIndex;
          DataGridViewRow row = dataGridView1.Rows[rowIndex];
          String location = @Folder + @"\" + Facility + @"\" + row.Cells[6].Value.ToString() + @"\" + row.Cells[0].Value.ToString();

          if (row.Cells[5].Value.ToString().ToUpper() == "PDF")
          {
              System.Diagnostics.Process.Start(Adobe, location);
          }

          if (row.Cells[5].Value.ToString().ToUpper() == "JPG")
          {
          //    System.Diagnostics.Process.Start("MSPAINT.exe", location);
         // This line opens the Jpeg file with Windows PAINT instead of jpegviewer
         System.Diagnostics.Process.Start("c:\\windows\\system32\\jpegviewer.exe ", location);
          }