Convert sbyte to Image in Windows Style App

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C#

.NET4.5

Hi ,
I have code in C3 which converts sbyte array to image. I am developing Windows metro style application and want to use this code in metro application?
Code is as

sbyte[][] img = byteIMG.Array;
                Bitmap bmp = new Bitmap(strWidth, strHeight);
                Graphics g = Graphics.FromImage(bmp);
                g.Clear(Color.White);

                for (int i = 0; i <= img.Length - 1; i++)
                {
                    for (int j = 0; j <= img[i].Length - 1; j++)
                    {
                        if (img[j][i] == 0)
                        {
                            g.FillRectangle(Brushes.Black, i, j, 1, 1);
                        }
                        else
                        {
                            g.FillRectangle(Brushes.White, i, j, 1, 1);
                        }
                    }
                }
 bmp.Save("C:\\" + strFileName + ".jpg", System.Drawing.Imaging.ImageFormat.Jpeg);

But i cant use some of namespaces required for this ex System.Drawing.Graphics and System.Drawing.Bitmap.

Could you please guide me how can i achive this ?

your help would be greatful for me.... Its urgent need in my project and am searching a lot on but don't found any soln ..

Please guide me

Thanks in Advance