Create text file on a network shared location

using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Security.Principal;
 
public class ImpersonatedUser : IDisposable
{
    IntPtr userHandle;
    WindowsImpersonationContext impersonationContext;
 
    public ImpersonatedUser(string user, string domain, string password)
    {
        userHandle = IntPtr.Zero;
        bool loggedOn = LogonUser(
            user,
            domain,
            password,
            LogonType.Interactive,
            LogonProvider.Default,
            out userHandle);
 
        if (!loggedOn)
            throw new Win32Exception(Marshal.GetLastWin32Error());
 
        // Begin impersonating the user
        impersonationContext = WindowsIdentity.Impersonate(userHandle);
    }
 
    public void Dispose()
    {
        if (userHandle != IntPtr.Zero)
        {
            CloseHandle(userHandle);
            userHandle = IntPtr.Zero;
            impersonationContext.Undo();
        }
    } 
 
    [DllImport("advapi32.dll", SetLastError = true)]
    static extern bool LogonUser(
        string lpszUsername,
        string lpszDomain,
        string lpszPassword,
        LogonType dwLogonType,
        LogonProvider dwLogonProvider,
        out IntPtr phToken
        );
 
    [DllImport("kernel32.dll", SetLastError = true)]
    static extern bool CloseHandle(IntPtr hHandle);
 
    enum LogonType : int
    {
        Interactive = 2,
        Network = 3,
        Batch = 4,
        Service = 5,
        NetworkCleartext = 8,
        NewCredentials = 9,
    }
 
    enum LogonProvider : int
    {
        Default = 0,
    }
}

using (var impersonation = new ImpersonatedUser(username, domain, password))
{
    string filePath = "\\\\10.1.2.179\\source\\";
    StreamWriter SW1;
    FileIOPermission myPerm = new FileIOPermission(FileIOPermissionAccess.AllAccess,FillePath+fileName);
    myPerm.Assert();
    SW1 = File.CreateText(filePath+fileName);
}