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tarun kumar
NA
14
0
image viewer for reading bitmap file by binary reading
Jun 21 2009 5:02 PM
after reading the algorithm of bitmap files i have created a small program which is not working properly but displaying zigzag pattern
my code is this
public void display(String filename)
{
FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read);
BinaryReader br = new BinaryReader(fs);
if (br.ReadChar().ToString() + br.ReadChar().ToString() == "BM")
{
bfSize = br.ReadInt32();
bfReserved1 = br.ReadInt16();
bfReserved2 = br.ReadInt16();
bfoffbits = br.ReadInt32();
biSize = br.ReadInt32();
biWidth = br.ReadInt32();
biHeight = br.ReadInt32();
biPlanes = br.ReadInt16();
biBitCount = br.ReadInt16();
biCompression = br.ReadInt32();
biSizeImage = br.ReadInt32();
biXPelsPerMeter = br.ReadInt32();
biYPelsPerMeter = br.ReadInt32();
biClrUsed = br.ReadInt32();
biClrImportant = br.ReadInt32();
Bitmap bmp = new Bitmap((int)biWidth,(int)biHeight);
pictureBox1.Size = new Size((int)biWidth, (int)biHeight);
try
{
for (int x = 0; x < biWidth ; x++)
{
for (int y = (int)biHeight-1; y >= 0; y--)
{
rgbRed=br.ReadByte();
rgbGreen=br.ReadByte();
rgbBlue = br.ReadByte();
bmp.SetPixel(x,y,Color.FromArgb(rgbRed,rgbGreen,rgbBlue));
}
}
pictureBox1.Image = bmp;
}
catch
{
MessageBox.Show("there is some problem with file format");
}
}
else
MessageBox.Show("this is not a bitmap file");
fs.Flush();
}
please help
Reply
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