private void button1_Click(object sender, EventArgs e) { SqlDataAdapter sda = new SqlDataAdapter("SELECT * FROM Users WHERE Employee_ID = '" + textBox1.Text.Trim() + "' AND Password = '******'", con); SqlCommand cmd = new SqlCommand("SELECT * FROM Users WHERE Employee_ID = '" + textBox1.Text.Trim() + "' AND Password = '******'", con); SqlDataReader dr; DataTable dt = new DataTable(); try { con.Open(); sda.Fill(dt); if (dt.Rows.Count == 1) { dr = cmd.ExecuteReader(); while (dr.Read()) { role = dr.GetValue(4).ToString().Trim(); name = dr.GetValue(1).ToString() + " " + dr.GetValue(2).ToString(); if (role == "Manage") { this.Hide(); Manage dlg1 = new Manage(); dlg1.Show(); dlg1.BringToFront(); } else if (role == "Social") { this.Hide(); Social dlg = new Social(); dlg.Show(); dlg.BringToFront(); } } } else { MessageBox.Show("Please make sure you have entered the correct information", "Invalid Details", MessageBoxButtons.OK, MessageBoxIcon.Error); } con.Close(); } catch (Exception er) { MessageBox.Show("Error!!", "" + er); } }