FpSpread1.Sheets[0].BackgroundImage = Image.FromFile("C:\\Program Files (x86)\\Common\\logo.bmp");
FpSpread1.Sheets[0].DefaultStyle.BackColor = Color.Transparent;
FpSpread1.Sheets(0).BackgroundImage = Image.FromFile("C:\Program Files (x86)\Common\logo.bmp")
FpSpread1.Sheets(0).DefaultStyle.BackColor = Color.Transparent