How to remove comma separated value from a string?

Question

I want to remove a comma separated value from the string..

suppose I have a string like this

string x=\"r, v, l, m\"

and i want to

Answer 1

Something like this?

string input = "r,v,l,m";
string output = String.Join(",", input.Split(',').Where(YourLogic));

bool YourLogic(string x)
{
    return true;
}