C# String.Replace() & Regex.Replace() not working at my end

Question

see this code example
string maindata = "Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";
string data = "Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";

            //data = Regex.Escape(data);

            string strformula = Regex.Replace(maindata, "\"" + data.Replace("(", "\\(").Replace(")", "\\)").Replace("$", "\\$") + "\"", "W51",RegexOptions.IgnoreCase);
            strformula = maindata.Replace("\"" + data.Replace("(", "\\(").Replace(")", "\\)").Replace("$", "\\$") + "\"", "W51");

Regex.Escape(data); also does not work.

i really do not understand the reason behind why this replace is getting fail ? please guide me what is lacking there ?

EDIT

---

string maindata = "Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";
string data =     "Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";
string strformula = Regex.Replace(maindata, data , "W51",RegexOptions.None);

try my above code and must notice replace not able to replace Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999 with W51

Thanks

Answer 1

I got the solution. here is code which is working now. this one help to sort the issue Regex.Replace(maindata, @"[^\w\d]", "_");

string maindata = "Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";  
string data = "Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";     
      
string modifiedMainData = Regex.Replace(maindata, @"[^\w\d]", "_");  
string modifiedData = Regex.Replace(data, @"[^\w\d]", "_");  
      
      
string finalResult = Regex.Replace(modifiedMainData, modifiedData, "W51", RegexOptions.None);  

This is another approach which worked.

            string maindata = @"Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";   
            string data = @"Operational Metrics~Domestic Subscribers Disney+~2015 FY~9999";   
            data = Regex.Escape(data);  
            string strformula = Regex.Replace("\"" + maindata + "\"", "\"" + data.Replace("(", "\\(").Replace(")", "\\)").Replace("$", "\\$") + "\"", "W51", RegexOptions.None);