C#

//as1 is a TextBox
string AS1 = as1.Text; 
string sAS1 = AS1.PadRight(AS1.Length + (as1.MaxInputLength - AS1.Length));

//prweb1 is a column in dataGridView1
foreach (DataGridViewRow row in prweb1.DataGridView.Rows)
{
    DataGridViewCell cell = row.Cells[0];
    string PRWEB1 = cell.Value.ToString();
}
string sPRWEB1 = PRWEB1.PadRight(PRWEB1.Length + (prweb1.MaxInputLength- PRWEB1.Length));

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace XMLReformat
{
    class Program
    {
        static void Main(string[] args)
        {

            //Console.WriteLine("Please Enter the directory of XML Documents:\n");
            //string userDir = Console.ReadLine();

            string userDir = "C:\\xmlreformat";

            try
            {
                string[] filePaths = Directory.GetFiles(userDir);
                foreach (string i in filePaths)
                {
                    // Call reformat operation

                    Reformat.Replace(i);

                }
                Console.WriteLine("Operation Succeeded \n \n Press Any Key to Exit");
                Console.ReadKey();
            }
            catch (Exception e)
            {
                Console.WriteLine("Directory Not Found:" + e.Message);
                Console.WriteLine("\n \n Press Any Key to Exit");
                Console.ReadKey();
            }

            

        }
    }
}

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace XMLReformat
{
    class Reformat
    {

        public static void Replace(string FName)
        {
            StreamReader File = new StreamReader(FName); // create new streamreader
            
            string fileContent = File.ReadToEnd(); // create new string, read file into string
            File.Close();


            StreamWriter NewFile = new StreamWriter(FName); // create new stream writer

            string fileContentCopy = fileContent;

            string istring1 = ">";
            string ostring1 = ">";

            string istring2 = "<";
            string ostring2 = "<";

            fileContentCopy.Replace(istring1, ostring1);
            fileContentCopy.Replace(istring2, ostring2);


            fileContent = fileContentCopy;

            NewFile.Write(fileContent);


        }


    }
}