Multiple user login c#

I need help on login, logout and timer. If a user enters a password once it must allow another user to enter theirs (login) without logging off to the 1st user, but if the user enters twice it must logout. The following is the source code;

if (textBox1.Text == "")

{

MessageBox.Show("please enter employee number");

textBox1.Focus();

}

else

{

try

{

var strconn = ConfigurationManager.ConnectionStrings["tk"].ConnectionString;

SqlConnection conn = new SqlConnection(strconn);

SqlCommand cmd = new SqlCommand();

cmd.Connection = conn;

cmd = new SqlCommand("SELECT employee_number FROM employeedetails WHERE employee_number = @employee_number", conn);

SqlParameter employee_number = new SqlParameter("@employee_number", SqlDbType.NChar);

employee_number.Value = textBox1.Text;

cmd.Parameters.Add(employee_number);

cmd.Connection.Open();

SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);

if (myReader.Read() == true)

{

search();

if (textBox1.TextLength == 4 & radioButton1.Checked == false)

{

textBox1.Text = myReader[0].ToString();

txtstart.Text = login.ToShortTimeString();

txtDate.Text = login.ToShortDateString();

radioButton1.Checked = true;

textBox1.Text = "";

}

else if (textBox1.TextLength == 4 & radioButton1.Checked == true)

{

logout = DateTime.Now;

txtend.Text = logout.ToLongTimeString();

//display on the textbox

logout = DateTime.Now;

listBox1.Items.Add("employee number:" + textBox1.Text);

listBox1.Items.Add("login duration - Min :" + logout.Subtract(login).Minutes);

listBox1.Items.Add("login duration - hour :" + logout.Subtract(login).Hours);

listBox1.Items.Add("login duration - mili :" + logout.Subtract(login).Milliseconds);

listBox1.Items.Add("login duration - Sec :" + logout.Subtract(login).Seconds);

listBox1.Items.Add("--------------------------------------------------------");

txtnumberofhours.Text = "min" + logout.Subtract(login).Minutes;

radioButton1.Checked = false;

textBox1.Text = "";

insert();

}

else if (textBox1.TextLength != 4)

{

}

else

{

MessageBox.Show("Enter whatever");

}

else

{

MessageBox.Show(this, "Login Failed...Try again !", "Login Denied", MessageBoxButtons.OK, MessageBoxIcon.Error);

textBox1.Clear();

}

if (conn.State == ConnectionState.Open)

{

conn.Dispose();

}

I am writing a program of login, logout and using timer to calculate how many hours worked. So what I really meant is that whenever a single user logs in, other users should also be able to login as well without logout, because it will be calculating the number of hours per each employee. And in the meantime while the users are logged in, it should be able to allow a user to logout in order to stop the hours worked. So now what I really need is for the multiple users to be able to login in different employee numbers in order it should calculate each employee hours. So the code I’ve posted, what it does when I enter employee number it begins to calculate number of hours, but the problem is that whenever I enter a different employee number it stops the timer and which is something I don’t want, it must begin another timer for each employee/user.

2 Replies

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thokozani mlangeni11y ago
I am writing a program of login, logout and using timer to calculate how many hours worked. So what I really meant is that whenever a single user logs in, other users should also be able to login as well without logout, because it will be calculating the number of hours per each employee. And in the meantime while the users are logged in, it should be able to allow a user to logout in order to stop the hours worked. So now what I really need is for the multiple users to be able to login in different employee numbers in order it should calculate each employee hours. So the code I’ve posted, what it does when I enter employee number it begins to calculate number of hours, but the problem is that whenever I enter a different employee number it stops the timer and which is something I don’t want, it must begin another timer for each employee/user.
Dipankar Biswas11y ago
hi..
If a user enters a password once it must allow another user to enter theirs (login) without logging off to the 1st user
Please tell me clearly above this line...