string Replace not working in asp.net [duplicate]

Question

string mystring="the are boys";

string[] tags = {"the"};

string[] replace ={"they"}

mystring.Replace(tags[0],replace[0]) // is not working

mystring.Replace("the","they") // is working 

I thought both are same but first statement is not working. The second one is. Please help me to solve the problem.

Answer 1

I assume that you don't assign the return value of String.Replace to the variable. But since strings are immutable you have to do that:

mystring = mystring.Replace(tags[0],replace[0])