Alternative to multiple String.Replaces [duplicate]

Question

My code uses String.Replace several times in a row:

mystring = mystring.Replace("somestring", variable1); mystring = mystring.Replace("somestring2", variable2); mystring = mystring.Replace("somestring3", variable1); 

I suspect there's a better and faster way to do it. What would you suggest?

Answer 1

For an 'easy' alternative just use a StringBuilder....

StringBuilder sb = new StringBuilder("11223344");  string myString =     sb       .Replace("1", string.Empty)       .Replace("2", string.Empty)       .Replace("3", string.Empty)       .ToString(); 

Answer 2

Are we going for ways to make this harder to understand what is going on?

If so regex is your friend

var replacements = new Dictionary<string,string>() {    {"somestring",someVariable1},    {"anotherstring",someVariable2} };  var regex = new Regex(String.Join("|",replacements.Keys.Select(k => Regex.Escape(k)))); var replaced = regex.Replace(input,m => replacements[m.Value]); 

Live: http://rextester.com/SXXB8348