private void back_Click(object sender, EventArgs e) { teacherfirstform teacherfirstform = new teacherfirstform(); this.Hide(); teacherfirstform.Show(); }
private void button1_Click(object sender, EventArgs e) { teacherfirstform teacherfirstformui = new teacherfirstform(); teacherfirstformui.Show(); this.Close(); }
private void btnlogin_Click(object sender, EventArgs e) { if (radiobtnstudent.Checked == true) { string connectionstring1 = @"Data Source=TUHIN-PC\SQLEXPRESS;Initial Catalog=university;Integrated Security=True"; SqlConnection connection = new SqlConnection(connectionstring1); SqlCommand command = new SqlCommand("SELECT *FROM studentbasic WHERE name='" + txtname.Text + "'and pass='******'", connection); connection.Open(); SqlDataReader reader; reader = command.ExecuteReader(); int count = 0; while (reader.Read()) { count++; } if (count == 1) { studentinterface studentinterface = new studentinterface(txtname.Text); studentinterface.Show(); this.Hide(); } else { MessageBox.Show("Name Or Password Is incorrect", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Error); } } else if (radiobtnteacher.Checked == true) { string connectionstring1 = @"Data Source=TUHIN-PC\SQLEXPRESS;Initial Catalog=university;Integrated Security=True"; SqlConnection connection = new SqlConnection(connectionstring1); SqlCommand command = new SqlCommand("SELECT *FROM teacher WHERE name='" + txtname.Text + "'and pass='******'", connection); connection.Open(); SqlDataReader reader; reader = command.ExecuteReader(); int count = 0; while (reader.Read()) { count++; } if (count == 1) { teacherfirstform teacherfirstform = new teacherfirstform(); this.Hide(); teacherfirstform.Show(); } else { MessageBox.Show("Name Or Password Is incorrect", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Error); } } }