how to use login form user MDIParent form

Question

 hi i m ramesh sahu i m develop on window application project in C#.Net i have taken MDIParent Form and menu bar Login Option i m unable to do logout ones login is active and how to do log out in mdiparent form 

i want to show username who login in mdiparent form either on title bar or toolstrip menu

please help me sir  

 

 

 

this is my code

 

private void LogIn_Btn_Click(object sender, EventArgs e)

{

if ((txtUId.Text != "") && (txtpwd.Text != ""))

{

SqlConnection con = new SqlConnection("Data Source=DESKTOP-ERCK15V;Initial Catalog=AnySoftDB;Integrated Security=True; User Id=sa; Password=123");

SqlCommand cmd = new SqlCommand();

cmd.Connection = con;

cmd.CommandType = CommandType.StoredProcedure;

cmd.CommandText = "Login_Sp";

cmd.Parameters.AddWithValue("@UserId", this.txtUId.Text);

cmd.Parameters.AddWithValue("@Pwd", this.txtpwd.Text);

con.Open();

SqlDataReader dr = cmd.ExecuteReader();

while (dr.Read())

{

if (dr.HasRows == true)

{

MessageBox.Show("Login Successfully Done");

this.MdiParent.Text = "Anyosoft " + " Welcome " + txtUId.Text;

Form fm = Application.OpenForms["Login"];

this.Visible = false;

}

}

if (dr.HasRows == false)

{ MessageBox.Show("Access Denied, password username mismatched"); }

}

else { MessageBox.Show("Enter username and password"); }

}