using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace PNB
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{

}

private void button1_Click(object sender, EventArgs e)
{
try
{
if (openFileDialog1.FileName == "")
{
MessageBox.Show("File Not Selected", "Error");

} //if (openFileDialog1.FileName == "")

StreamWriter SW;
StreamReader SR;
//string S;
//string SingleLine = "";
string bn = "";
//if (rbPNB.Checked == true) { bn = "PNB"; } else { bn = "Ace"; }

SR = File.OpenText(openFileDialog1.FileName);
//SW = File.CreateText("D:\\PNB\\" + bn + "1.txt");
SW = File.CreateText("D:\\PNB\\1.txt");

int[] numbers = {15, 18, 26, 27, 44, 74, 79, 99, 104, 114, 120, 128, 129, 146, 149, 154,
169, 179, 184, 190 ,196, 198, 199, 211, 221, 241, 246, 276, 316, 356, 396,
436, 476, 493, 510, 527, 544, 561, 591, 607, 619, 629, 639, 648, 652, 908
}; //int[] numbers
//string strpos = System.Configuration.ConfigurationManager.AppSettings["array"];
//char[] sep = { ',' };
//string[] arraynum = strpos.Split(sep);

//string strpos1 = System.Configuration.ConfigurationManager.AppSettings["array1"];
//char[] sep1 = { ',' };
//string[] arraynum1 = strpos1.Split(sep1);

//int[] number = { 10, 1, 4, 5, 5, 29, 30, 8, 6, 39 };//int[] number

string[] arr = { };//string[] arr
int n = numbers.Length;
int b = 0;
int c = 0;
int s;
int numberslength = numbers.Length;
//int numlength = arraynum.Length;
string SingleLine = "";
string S;
while ((SingleLine = SR.ReadLine()) != null)
//while (!SR.EndOfStream)
{
//if (bn == "Ace")
//{

S = SR.ReadLine();

for (int i = 0; i < n; i++)
{
if (i == 0)
{
s = -1;
int a = numbers[i];
b = s + 1;
c = a - b + 1;

//Console.WriteLine("Start:\t" + b);
//Console.WriteLine("End:\n" + c);
}
else
{
//int k = numbers[i - 1];
int a = numbers[i];
b = numbers[i - 1] + 1;//start
c = a - b + 1;//End
//Console.WriteLine("Start:\t" + p);
//Console.WriteLine("End:\n" + q);
}

SingleLine = String.Concat(SingleLine, S.Substring(b, c));
SingleLine = String.Concat(SingleLine, ",");


//string SingleLine = String.Concat(SingleLine, S.Substring(b, c));
//SingleLine = String.Concat(SingleLine, ",");

}//for (int i = 0; i < n; i++)

string st = SingleLine;

arr = st.Split(',');

int index;
string outputstring = "";
if (rbPNB.Checked == true)
{
bn = "PNB";
string strpos = System.Configuration.ConfigurationManager.AppSettings["array"];
char[] sep = { ',' };
string[] arraynum = strpos.Split(sep);

for (int j = 0; j < arraynum.Length; j++)
{
index = Int32.Parse(arraynum[j]) - 1;
outputstring += arr[index] + ",";
}
}//if (bn == "Ace")

else
{
bn = "Ace";
string strpos1 = System.Configuration.ConfigurationManager.AppSettings["array1"];
char[] sep1 = { ',' };
string[] arraynum1 = strpos1.Split(sep1);
for (int j = 0; j < arraynum1.Length; j++)
{
index = Int32.Parse(arraynum1[j]) - 1;
outputstring += arr[index] + ",";
}
}
SingleLine = outputstring.Trim(',');
SW.WriteLine(SingleLine);

// }//if (bn == "Ace")




} // while ( !SR.EndOfStream )

SR.Close();
SW.Close();

MessageBox.Show("Sucessful File Conversion to " + bn);
}//try
catch {
MessageBox.Show("Error : ");
}
} // Private Button1 click




private void button2_Click(object sender, EventArgs e)
{
while (openFileDialog1.FileName == "")
{
openFileDialog1.ShowDialog();
}//End of While Loop


}//End Of button2_click

private void rbPNB_CheckedChanged(object sender, EventArgs e)
{

}//End of rbPNB_checkedChanged

private void rbAce_CheckedChanged(object sender, EventArgs e)
{

}//End of rbAce_checkedChanged

}//End Of the class Form1

}//End of Namespace PNB



Hi all,
Above contain the code for reading the data and write from one format to another and vice versa
But the problem is that at runtime, here suppose one file is in T004 format and i am writing to txt format it creates the empty file and it goes to catch block giving error which is present in the MessageBox.show and creates the empty file. and when i take txt file it sucessfully convert to respective format sucessfully
Can anyone help with the same
Thanks and Regards