private void btnLogin_Click(object sender, EventArgs e) { passar = txtregno.Text; connection.Open(); SqlCommand check = new SqlCommand( "select * from StudentPassword where RegNo='" + txtregno.Text + "' and Password='******';", connection ); SqlDataReader readcheck = check.ExecuteReader(); if (readcheck.Read()) { connection.Close(); StudentLogedForm stu = new StudentLogedForm(); stu.Visible = true; this.Hide(); } else { connection.Close(); MessageBox.Show("Check your RegNo and Password..."); txtregno.Text = ""; txtpassword.Text = ""; } }
private void login_Click(object sender, EventArgs e) { if (password.Text == confirmpassword.Text) { connection.Open(); SqlCommand readNIC = new SqlCommand( "select * from StudentTable where RegNo='" + txtpassword.Text + "';", connection ); SqlDataReader read = readNIC.ExecuteReader(); if (read.Read()) { connection.Close(); connection.Open(); SqlCommand readNIC2 = new SqlCommand( "select * from StudentPassword where RegNo='" + txtpassword.Text + "';", connection ); SqlDataReader read2 = readNIC2.ExecuteReader(); if (read2.Read()) { connection.Close(); MessageBox.Show("Already You have an Student account..."); txtpassword.Text = ""; password.Text = ""; confirmpassword.Text = ""; } else { connection.Close(); connection.Open(); SqlCommand insert = new SqlCommand( "insert into StudentPassword values('" + txtpassword.Text + "','" + password.Text + "');", connection ); insert.ExecuteNonQuery(); connection.Close(); StudentLogedForm stu = new StudentLogedForm(); stu.Visible = true; this.Hide(); } } else { connection.Close(); MessageBox.Show("There is no any RegNo insert by admin......."); txtadmin.Text = ""; password.Text = ""; confirmpassword.Text = ""; } } else { MessageBox.Show("confirm password != password"); } }