js replace space with underscore

                
                        var string = "my name";
string = string.replace(/ /g,"_"); //returns my_name
                    
                

replace space with underscore in csharp

                        
                                using System;
class Demo {
   static void Main() {
      String str, str2;
      str ="Hello World !";
      Console.WriteLine("String: "+str);
      str2 = str.Replace(" ", "-");
      Console.WriteLine("String (After replacing): "+str2);
   }
}
                            
                        

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