Recently a colleague of mine asked me to give him a code for replacing spaces,dots(.),hyphens(-),braces '(' and ')'.

Here is my solution

string str= "This is a string having - and - - - - It also has dot (.) Many dots(.....)"; 

var way1 = str
                .ToCharArray()
                .Where(i => 
                            i != ' ' && 
                             i != '-' && 
                            i != '.' && 
                           i != '(' &&
                            i != ')'
                           )
                        .Aggregate(" ", (a, b) => a + b);

Approach 2: Using string concat function and lambda and extension method

 var way2= string.Concat(str.Where(i => !new[] { '.', ' ', '-', '(' ,')'}.Contains(i))); 

Approach 3: Using regular expression

  var way3 = Regex.Replace(str, "[ ().-]+", ""); 

OUTPUT

ThisisastringhavingandItalsohasdotManydots 

Thanks