using NUnit.Framework;

​

using System;

using System.Text;

using System.IO;

using System.Xml;

public class Program

{

    public static void Main()

    {

        string edi = "ISA*00*          *00*          *02*MINE           *ZZ*YOUR           *170110*2107*U*00501*800003725*0*P~ GS*SM*MINE*YOUR*20170110*2107*3726*X*005010~ ST*204*3726~ B2****678912**PP~ B2A*00*LT~ L11*12345678*CO~ N1*SL**93*09~ N3*1234 LINCOLN HWY~ N4*BEDFORD*PA*15522*USA~ S5*1*CL~ L5***16727251*Z**F1MA000013336881*SM~ AT8****3~ SE*24*3726~ GE*1*3726~ IEA*1*800003725~";

        string sRet = string.Empty;

        sRet=GenerateStringFromStream(ConvertEdiToXml(GenerateStreamFromString(edi)));

        // ***************************************************************************************************************

        //

        // Write code in the method ConvertEdiToXml that will take the edi string as a MemoryStream, 

        // convert it to XML and return a MemoryStream.

        //

        // Then convert that MemoryStream to a string called sRet.

        //

        // IMPORTANT: 

        //   When you are done, please click on the Share button above and reply to the email with that link 

        //   so that we can access your code and evaluate it.

        //

        //   You have 90 minutes to complete this

        //

        // ***************************************************************************************************************

        Assert.AreEqual(sRet, "<root><ISA><ISA01>00</ISA01><ISA03>00</ISA03><ISA05>02</ISA05><ISA06>MINE</ISA06><ISA07>ZZ</ISA07><ISA08>YOUR</ISA08><ISA09>170110</ISA09><ISA10>2107</ISA10><ISA11>U</ISA11><ISA12>00501</ISA12><ISA13>800003725</ISA13><ISA14>0</ISA14><ISA15>P</ISA15></ISA><GS><GS01>SM</GS01><GS02>MINE</GS02><GS03>YOUR</GS03><GS04>20170110</GS04><GS05>2107</GS05><GS06>3726</GS06><GS07>X</GS07><GS08>005010</GS08></GS><ST><ST01>204</ST01><ST02>3726</ST02></ST><B2><B204>678912</B204><B206>PP</B206></B2><B2A><B2A01>00</B2A01><B2A02>LT</B2A02></B2A><L11><L1101>12345678</L1101><L1102>CO</L1102></L11><N1><N101>SL</N101><N103>93</N103><N104>09</N104></N1><N3><N301>1234 LINCOLN HWY</N301></N3><N4><N401>BEDFORD</N401><N402>PA</N402><N403>15522</N403><N404>USA</N404></N4><S5><S501>1</S501><S502>CL</S502></S5><L5><L503>16727251</L503><L504>Z</L504><L506>F1MA000013336881</L506><L507>SM</L507></L5><AT8><AT804>3</AT804></AT8><SE><SE01>24</SE01><SE02>3726</SE02></SE><GE><GE01>1</GE01><GE02>3726</GE02></GE><IEA><IEA01>1</IEA01><IEA02>800003725</IEA02></IEA></root>");

        Console.WriteLine(sRet);

        Console.WriteLine("done");

    }

    #region "Private Methods"

        private static string GenerateStringFromStream(MemoryStream strm)

        {

            string strResult=string.Empty;

            MemoryStream stream = strm;

            stream.Position = 0;

            var sr = new StreamReader(stream);

            strResult = sr.ReadToEnd();

            return strResult;

        }

        private static MemoryStream GenerateStreamFromString(string s)

        {

            MemoryStream stream = new MemoryStream();

            StreamWriter writer = new StreamWriter(stream);

            writer.Write(s);

            writer.Flush();

            stream.Position = 0;

            return stream;

        }

    #endregion

        #region "Public Methods"

        public static MemoryStream ConvertEdiToXml(MemoryStream edi)

        {

            System.IO.MemoryStream stream=new MemoryStream();

            try

            {

               string strXML=string.Empty;     

               string strEDI = GenerateStringFromStream(edi);

                //Split string in rows on the basis of '~';

                string[] tags = strEDI.Split('~');

                strXML="<root>";

                int rowID=1;

                int colID=0;

                string tagValue=string.Empty;

                foreach (string tag in tags)

                {

                    string[] childTags = tag.Split('*');

                    foreach (string cTag in childTags)

                    {

                      if(cTag.Trim()!="" || cTag.Trim()!=string.Empty)

                      {

                          if(colID>0)

                          {

                              strXML=strXML + "<" + tagValue + "0" + colID.ToString() + ">" + cTag.Trim() + "</" + tagValue + "0" + colID.ToString() + ">";

                          }

                          else

                          {

                            tagValue=cTag.Trim();

                            strXML=strXML + "<" + cTag.Trim() + ">";

                          }

                          colID+=1;

                      }

                    }

                        colID=0;

                        strXML=strXML + "</" + childTags[0] + ">";

                }

                strXML=strXML + "</root>";

                stream=  GenerateStreamFromString(strXML);          

            }

            catch(Exception ex)

            {

               throw ex;    

            }

            return stream;

        }

    #endregion

}

​