c# - Using async/await with pre-defined delegate signature -

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The code is as follows: 

  Fixed zero A () {string input = "Abcabcabc"; String pattern = "a"; String result = Regex. Change (Input, Pattern, Match => Evaluator (match)); } Fixed String Evaluator (match match) {return "D"; }   
 Is there any way to use ASCNC / wait with a representative like this?  
 This:  
  Fixed zero B () {String input = "abcabcabc"; String pattern = "a"; String result = Reggae Replay (input, pattern, async match = & aw; awkward; await for async match;); } Fixed async work & lt; String & gt; EvaluatorAsync (match match) {return "D"; }   
 ... does not work - the error message is 'The return type of an asynck method should be zero, work or work'.   
 
 
 The third parameter that you are going to  Regex.Replace   
    
 You are going to a  async  representative whose redundant type is  Task & lt; String & gt; . You can    String result = Reggae. Change (Input, Pattern, Match => EvaluatorAynyn (match). Results);   
 But until the result is available, it will be blocked, which eliminates the purpose even further. Since reggae is highlighted in searches, the CPU is straightforward, so  async  will not help you there. You can do this to work in the background thread  Task. Use  to run.

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