FormatWithMask

Fonksiyon:

/// <summary>
        /// Formats the string according to the specified mask
        /// </summary>
        /// <param name="input">The input string.</param>
        /// <param name="mask">The mask for formatting. Like "A##-##-T-###Z"</param>
        /// <returns>The formatted string</returns>
        public static string FormatWithMask(this string input, string mask)
        {
            if (input.IsNullOrEmpty()) return input;
            var output = string.Empty;
            var index = 0;
            foreach (var m in mask)
            {
                if (m == '#')
                {
                    if(index < input.Length)
                    {
                        output += input[index];
                        index++;
                    }
                }
                else
                    output += m;
            }
            return output;
        }

For Exampe:

var s = "aaaaaaaabbbbccccddddeeeeeeeeeeee".FormatWithMask("Hello ########-#A###-####-####-############ Oww");
            s.ShouldEqual("Hello aaaaaaaa-bAbbb-cccc-dddd-eeeeeeeeeeee Oww");
 
var s = "abc".FormatWithMask("###-#");
            s.ShouldEqual("abc-");
 
var s = "".FormatWithMask("Hello ########-#A###-####-####-############ Oww");
            s.ShouldEqual("");