C# Get Initials of DisplayName

Question

I'm trying to extract initials from a display name to be used to display their initials. I'm finding it difficult because the string is one value containing one word or more. How can I achieve this?

Example:

'John Smith' => JS

'Smith, John' => SJ

'John' => J

'Smith' => S

public static SearchDto ToSearchDto(this PersonBasicDto person)
        {
            return new SearchDto
            {
                Id = new Guid(person.Id),
                Label = person.DisplayName,
                Initials = //TODO: GetInitials Code
            };
        }

I used the following solution: I created a helper method which allowed me to test for multiple cases.

public static string GetInitials(this string name)
        {
            if (string.IsNullOrWhiteSpace(name))
            {
                return string.Empty;
            }

            string[] nameSplit = name.Trim().Split(new string[] { ",", " " }, StringSplitOptions.RemoveEmptyEntries);
            var initials = nameSplit[0].Substring(0, 1).ToUpper();

            if (nameSplit.Length > 1)
            {
                initials += nameSplit[nameSplit.Length - 1].Substring(0, 1).ToUpper();
            }

            return initials;
        }

Answer 1

Simple and easy to understand code and handles names which contain first, middle and last name such as "John Smith William".

Test at: https://dotnetfiddle.net/kmaXXE

 Console.WriteLine(GetInitials("John Smith"));  // JS
 Console.WriteLine(GetInitials("Smith, John")); // SJ
 Console.WriteLine(GetInitials("John"));        // J
 Console.WriteLine(GetInitials("Smith"));       // S

 Console.WriteLine(GetInitials("John Smith William"));   // JSW
 Console.WriteLine(GetInitials("John     H       Doe"));   // JHD


 static string GetInitials(string name)
    {                       
        // StringSplitOptions.RemoveEmptyEntries excludes empty spaces returned by the Split method

        string[] nameSplit = name.Split(new string[] { "," , " "}, StringSplitOptions.RemoveEmptyEntries);
                    
        string initials = "";

        foreach (string item in nameSplit)
        {                
            initials += item.Substring(0, 1).ToUpper();
        }

        return initials;           
    }