Retry for three times If the File Exists in c# - asp.net

Question

My Requirement is i want to retry if the specific file exists,suppose like currently i'm doing svn installation / uninstallation so if the svn is installed then it will create RevisionNumber.txt and if the svn is uninstalled then ReveisionNumber.txt is deleted
So My Requirement is if RevisionNumber.txt exists / Svn exists i want to retry the process of svn uninstallation for 3 times.
can anyone please sort me out ? below is my code :
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace SVNUNINSTALL
{
class Program
{
public void Process()
{
System.Diagnostics.Process.Start("C:\\Users\\sk185462\\Desktop\\SVNUPDATED\\SvnUninstallation.exe");
bool exists = File.Exists("C:\\Users\\sk185462\\Desktop\\SVNUPDATED\\RevisionNumber.txt");
Console.WriteLine(exists);
Console.ReadLine();
}
static void main(String[] args)
{
ProcessStartInfo startInfo = new ProcessStartInfo();
}
}
}

Answer 1

public void Process()
{
bool exists = File.Exists("C:\\Users\\sk185462\\Desktop\\SVNUPDATED\\RevisionNumber.txt");
for(int i = 0; i < 3 && exists; i++)
{
System.Diagnostics.Process.Start("C:\\Users\\sk185462\\Desktop\\SVNUPDATED\\SvnUninstallation.exe");
Sleep(2000); // or long enough to ensure the uninstall process finishes executing
exists = File.Exists("C:\\Users\\sk185462\\Desktop\\SVNUPDATED\\RevisionNumber.txt");
}
Console.WriteLine(exists);
Console.ReadLine();
}