using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        var keywords = new Dictionary<string, string> { { "[FROMACCOUNT]", "12345" }, { "[TOACCOUNT]", "1234567" }, { "[OPENKEY]", "open transfer" }, { "[MEMO]", "this is memo" } };

        var transferDescrption = "Transfer Operation lorem ipsum dolor from [FROMACCOUNT] to [TOACCOUNT] - [OPENKEY] - with [MEMO]";

        transferDescrption = "Transfer Operation lorem from [FROMACCOUNT] to [TOACCOUNT] - [OPENKEY] - with [MEMO]";

        //transferDescrption = "Transfer Operation lorem ipsum from [FROMACCOUNT] to [TOACCOUNT] - [OPENKEY] - with [MEMO]";

        //transferDescrption = "Transfer Operation [FROMACCOUNT] to [TOACCOUNT] - [OPENKEY] - with [MEMO]";

​

        var transferDescrptionFinal = ReplaceKeywords(transferDescrption, keywords);

        if (transferDescrptionFinal.Length > 60)

        {

            var countToRemove = transferDescrptionFinal.Length - 60;

            if (keywords["[MEMO]"].Length > countToRemove)

            {

                keywords["[MEMO]"] = keywords["[MEMO]"].Substring(0, keywords["[MEMO]"].Length - countToRemove);

                transferDescrptionFinal = ReplaceKeywords(transferDescrption, keywords);

            }

            else

            {

                countToRemove = countToRemove - keywords["[MEMO]"].Length;

                keywords["[MEMO]"] = string.Empty;

                if (keywords["[OPENKEY]"].Length > countToRemove)

                {

                    keywords["[OPENKEY]"] = keywords["[OPENKEY]"].Substring(0, keywords["[OPENKEY]"].Length - countToRemove);

                }

                else

                {

                    countToRemove = countToRemove - keywords["[OPENKEY]"].Length;

                    keywords["[OPENKEY]"] = string.Empty;

                }

​

                transferDescrptionFinal = ReplaceKeywords(transferDescrption, keywords);

                transferDescrptionFinal = transferDescrptionFinal.Length > 60 ? transferDescrptionFinal.Substring(0, 60) : transferDescrptionFinal;

            }

        }

        Console.WriteLine(transferDescrptionFinal);

        Console.WriteLine("Length: " + transferDescrptionFinal.Length);

    }

    private static string ReplaceKeywords(string configuredValue,Dictionary<string, string> keywords)

    {

        var transferDescrptionTemp = configuredValue;

        foreach (var item in keywords)

        {

            transferDescrptionTemp = transferDescrptionTemp.Replace(item.Key, item.Value);

        }

​

        return transferDescrptionTemp;

    }

}