How to delete specific line from a text file in c#? - line

Question

I have a question. I am new here, so sorry if I did something wrong. I need to write a program which delete all comments (//, /**, */) lines from a text file. I wrote
static bool BeKomentaru(string line, out string nauja)
{
nauja = line ; //nauja is new(Im not from English speaking country)
for (int i = 0; i < line.Length - 1; i++)
if (line[i] == '/' && line[i + 1] == '/')
{
nauja = line.Remove(i);
return true;
}
else if (line[i].ToString() == "/*" && line [i +1].ToString() == "/")
{
nauja = line.ToString().Remove(i);
return true;
}
return false;
}
So, when the comment starts with //, my program delete it. But when comments are written with /** :
/** Skaito, analizuoja ir rašo į skirtingus failus.
#param fv - duomenų failo vardas
#param fvr - rezultatų failo vardas
#param fa - analizės failo vardas */
I don't know how to write code, which go through all lines in comments, not only the first one. Because this line
else if (line[i].ToString() == "/*" && line [i +1].ToString() == "/")
doesn't work.
EDIT: when i changed line:
else if (line[i].ToString() == "/*" && line [i +1].ToString() == "*/")
to:
else if (line[i].ToString() == "*" && line [i +1].ToString() == "*")
it delete the first line "/** Skaito, analizuoja ir rašo į skirtingus failus."
but doesn't delete other commentd which don't have // or /**