private void button1_Click_1(object sender, EventArgs e)
{
SqlCommand cmd = con.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = " select * from library_person where username='******' and password='******'";
cmd.ExecuteNonQuery();
DataTable dt = new DataTable();
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(dt);
count = Convert.ToInt32(dt.Rows.Count.ToString());
if (count == 0)
{
MessageBox.Show("Wrong Username/Password !!!\nPlease Try Again");
}
else
{
this.Hide();
mdi_user mu = new mdi_user();
mu.Show();
}
}
private void button1_Click(object sender, EventArgs e)
{
string sql = $"select * from library_person where username='******' and password='******';";
//takes the data from the password and user fields and checks them agains the database
MySqlCommand cmd = new MySqlCommand(sql, dbconnection);
cmd.ExecuteNonQuery();
DataTable dt = new DataTable();
// creating a datatable to populate with the users' credentials provided
MySqlDataAdapter da = new MySqlDataAdapter(cmd);
//uses a data adatapter and fills the newly created datatable
da.Fill(dt);
count = Convert.ToInt32(dt.Rows.Count.ToString());
if (count == 0)
{
MessageBox.Show("username password does not match");
}
else
{
this.Hide(); // hides the page as it is no longer required
dbconnection.Close(); // closes the db connecection
mdi_user mdi = new mdi_user(); //navigates to the mdi user
mdi.Show(); //shows the defined link above
}
}
private void ButtonCreateAccount_Click(object sender, EventArgs e)
{
// opens dbconnection
con = new MySqlConnection("server=localhost;user=root;database=120itdb;port=3306;password=;");
con.Open();
MySqlCommand command = con.CreateCommand();
command.CommandType = CommandType.Text;
command.CommandText = "Insert into library_person(`Id`, `fullname`, `username`, `password`, `email`) values (null,'" + textBoxFirstname.Text + "', '" + textBoxUsername.Text + "', '" + textBoxPassword.Text + "', '" + textBoxEmail.Text + "')";
command.ExecuteNonQuery();
// fills data into db if the following statements are correct
if (!CheckTextBoxesValues()) // see the method further below, but checks if the default values are present
{
// check if the password equal the confirm password
if (textBoxPassword.Text.Equals(textBoxConfirmPassword.Text))
{
// check if this username already exists
if (checkUsername())
{
MessageBox.Show("This Username Already Exists, Select A Different One", "Duplicate Username", MessageBoxButtons.OKCancel, MessageBoxIcon.Error);
}
else
{
// execute the query
if (command.ExecuteNonQuery() == 1)
{
MessageBox.Show("Your Account Has Been Created", "Account Created, Welcome to Lend-It-Out", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.Hide();
con.Close();
mdi_user mu = new mdi_user();
mu.Show();
}
else
{
MessageBox.Show("ERROR");
}
}
}
else
{
MessageBox.Show("Wrong Confirmation Password", "Password Error", MessageBoxButtons.OKCancel, MessageBoxIcon.Error);
}
}
else
{
MessageBox.Show("Enter Your Data First", "Empty Data", MessageBoxButtons.OKCancel, MessageBoxIcon.Error);
}
}
