I have developed this utility in order to export the BMP file to the excel file, which means, every pixel of the BMP file will be exported to the cells of the excel sheet.
private void btn_Process_Bitmap_Click(object sender, EventArgs e)
{

int row = 1;

//int colm = 1;
int colm = 676; // Width of image file
Excel.Application objApp;
Excel._Workbook objBook;
Excel.Workbooks wrkbook;
Excel._Worksheet wrksheet;
Excel.Sheets sheets;
Excel.Range range;
Excel.Range one_cel;

objApp = new Excel.Application();

wrkbook = objApp.Workbooks;

objBook = wrkbook.Add(Missing.Value);

sheets = objBook.Worksheets;

object misValue = System.Reflection.Missing.Value;

wrksheet = (Excel._Worksheet)sheets.get_Item(1);

range = wrksheet.get_Range("A1", Missing.Value);

range = range.get_Resize(200, 2000);

range.ColumnWidth = 1;

range.RowHeight = 10;

string line;

int l_hex_ctr;

char l_match_color;

int temp_index = 0;

byte byte_val;

byte[] array_ads = new byte[16];

int ads_tempctr;

byte_val = (byte)(0);

ads_tempctr = 0;

l_match_color = '0';

FileStream fs = new FileStream(g_bitmap_file + ".txt", FileMode.Open, FileAccess.Read);

StreamReader sr = new StreamReader(fs);

long l_file_len = fs.Length;

while (g_line_ctr > 0)

{

line = sr.ReadLine();

string[] l_hex_arr = line.Split(',');

l_match_color = '0';

for (l_hex_ctr = 0; l_hex_ctr < l_hex_arr.Length; l_hex_ctr++)

{

if (l_hex_arr[l_hex_ctr].Length > 1)

{

if (l_hex_arr[l_hex_ctr] == "FF")

{

//l_match_color = '0';

}

else

{

l_match_color = '1';

}

}

}

//Console.WriteLine(line + " - " + l_match_color.ToString());

if (l_match_color == '1')

{

switch (temp_index)

{

case 0: byte_val = (byte)(byte_val + 1);

break;

case 1: byte_val = (byte)(byte_val + 2);

break;

case 2: byte_val = (byte)(byte_val + 4);

break;

case 3: byte_val = (byte)(byte_val + 8);

break;

case 4: byte_val = (byte)(byte_val + 16);

break;

case 5: byte_val = (byte)(byte_val + 32);

break;

case 6: byte_val = (byte)(byte_val + 64);

break;

case 7: byte_val = (byte)(byte_val + 128);

break;

}

}

if (++temp_index == 8)

{

// wr_fl.Write(byte_val);

array_ads[ads_tempctr] = (byte)(byte_val);

temp_index = 0;

byte_val = (byte)(0);

if (++ads_tempctr > 15)

{

//for (ads_tempctr = 15; ads_tempctr >= 0; ads_tempctr--)

//{

// //wr_fl.Write(array_ads[ads_tempctr]);

// //Console.Write(array_ads[ads_tempctr]);

// //Console.Write(",");

//}

//Console.WriteLine(" ");

ads_tempctr = 0;

}

}

switch (l_match_color)

{

case '0':

//colm = colm + 1;

colm = colm - 1;

break;

case '1':

one_cel = (Excel.Range)wrksheet.Cells[row, colm];

one_cel.Interior.ColorIndex = 21;

//colm = colm + 1;

colm = colm - 1;

break;

}

//if (colm >= 128)

if (colm <= 0)

{

//row = row + 1;

row = row + 1;

//colm = 1;

colm = 676; // Width of image file

}

if (row > 17)

{

//break;

}

l_file_len--;

g_line_ctr--;

}

//objApp.Visible = true;

int l_index = g_bitmap_file.IndexOf('.');

string l_filename = g_bitmap_file.Substring(0, l_index);

objBook.SaveAs(l_filename + ".xlsx", Excel.XlFileFormat.xlWorkbookDefault, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);

//objApp.UserControl = true;

objApp.Quit();

//GC.Collect();

}