Create a File Attributes Changer / Locker in a C# Windows Application

private void button4_Click(object sender, EventArgs e)
{
//if all the inputs are provided
if (valid() == true)
{
//icacls command to change the security of the file
// /t means all the file and folder inside the folder
// /deny everyone:(f) deny everyone (f) fullcontrol of the file
cmdproc("/c icacls \"" + path + "\\" + file + "\"" + " /t /deny everyone:(f)", 0);
}
}

private void button5_Click(object sender, EventArgs e)
{
//if all the inputs are provided
if (valid() == true)
{
//icacls command to change the security of the file
// /t means all the file and folder inside the folder
// /grant everyone:(f) grant everyone (f) fullcontrol of the file
cmdproc("/c icacls \"" + path + "\\" + file + "\"" + " /t /grant everyone:(f)", 0);
}
}

public bool valid()
{
//clear any error
errors.Clear();
bool valid = false;
//path and file name is provided or not
if (flbrowse.SelectedPath != "" && filena.Text != "")
{
valid = true;
file = filena.Text;
}
//re assigning the values of file
if (filena.Text == "")
{
errors.SetError(filena, "Provide Input");
file = "";
}
//re assigning the values of path
if (flbrowse.SelectedPath == "")
{
errors.SetError(pat, "Provide Input");
path = "";
}
return valid;
}

private void toolStripStatusLabel1_Click(object sender, EventArgs e)

{
//show recovery window when pass and nam is clicked
Recovery r1 = new Recovery();
r1.ShowDialog();
}

private void Form1_Load(object sender, EventArgs e)
{
l1.ShowDialog();
//check if recovery was used
//than the show name and pass should be visible
if (l1.rec == 1)
{
namnpass.Visible = true;
}
}

private void pasteToolStripMenuItem_Click(object sender, EventArgs e)
{
//userfriendly ness copy n paste
richTextBox1.Copy();

//clear the field before pasting
//limitation only one name at a time
filena.Text = "";
filena.Paste();
}
}

Login (optional)

namespace Locker
{
public partial class Login : Form
{
public Login()
{
InitializeComponent();
}
//number of retries
int count = 0;
public int rec;
// mainpg f1 = new mainpg();

private void button1_Click(object sender, EventArgs e)
{
logic();
}

//user name and password validator method

public void logic()
{
//if valid is true
if (valid())
{
//maximum retry is 6
if (count < 6)
{
//username and password checking
if (textBox1.Text == "demo" && textBox2.Text == "pass")
{
this.Hide();
//this.Close();
}
//if the recovery key is not empty
else if (textBox3.Text != "")
{
//checks the key
if (textBox3.Text == "51350-73-4970-938")
{
//rec variable is 1 because this is tell the app that the recovery is used
rec = 1;
//trying to store the value of rec in other form which will really use it
//hide this form and show the main form
//f1.Show();
this.Hide();
//this.Close();
}
else
{
//error if the key does not match
errorProvider1.Clear();
errorProvider1.SetError(textBox3, "Input in this format 00000-00-0000-000");
MessageBox.Show("Attempts Left " + (6 - count), "Access Denied", MessageBoxButtons.OK, MessageBoxIcon.Stop);
}
}

else

{
//message if the name and pass does not match
MessageBox.Show("Attempts Left " + (6 - count), "Access Denied", MessageBoxButtons.OK, MessageBoxIcon.Stop);
}
}

else
{
//if the retry is over
MessageBox.Show("This Was Your Last Attempt Bye Bye", "Access Denied", MessageBoxButtons.OK, MessageBoxIcon.Stop);
Application.Exit();

}
//increment retry
count++;
}
}
//checks if any required field is empty??
public bool valid()
{
errorProvider1.Clear();
bool val = true;
if (textBox1.Text == "")
{
errorProvider1.SetError(textBox1, "Provide Input");
val = false;
}
if (textBox2.Text == "")
{

errorProvider1.SetError(textBox2, "Provide Input");

val = false;
}
if (textBox3.Text != "")
{

val = true;
}
return val;
}
//just to avoid use of mouse enter key to login
private void Login_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
logic();
}
}

private void Login_FormClosed(object sender, FormClosedEventArgs e)
{
Application.Exit();

}
}
}

Recovery (optional)



Timer=1000 interval

A Dialogue box of the main page is available when the user has entered the recovery key during login.

A valid recovery key will show the name and password.

Code()

namespace Locker
{
public partial class Recovery : Form
{
public Recovery()
{
InitializeComponent();
}
int i = 1;
private void button1_Click(object sender, EventArgs e)
{
if (textBox3.Text == "51350-73-4970-938")
{
label1.Visible = label2.Visible = true;
timer1.Enabled = true;
}
else
{
MessageBox.Show("Key Does not Match");
}
}

private void timer1_Tick(object sender, EventArgs e)
{
i++;
if (i == 10)

{
textBox3.Text = "";
label1.Visible = label2.Visible = false;
}
}
}
}