Tab Separeator!

You can use the following to split each line of your file into an array

string line;
string[] list;

TextReader tr = new StreamReader(YourFile);

while ((line = tr.ReadLine()) != null)
{
list = line.Split(new char[] {'\t'});
foreach (string  line in list)
{
//do stuff with array
}
}

Why would you need your program to output this file to excel when it's already in a format that excel can read?