private void MakeChages(object sender, EventArgs e) { if (comboBoxAccType.Text == "Admin") { List <string> usernames = u.getAdminUsername(); //metroTextBoxPatientId AutoCompleteStringCollection colValues = new AutoCompleteStringCollection(); metroTextBoxUsername.AutoCompleteMode = AutoCompleteMode.SuggestAppend; metroTextBoxUsername.AutoCompleteSource = AutoCompleteSource.CustomSource; colValues.AddRange(usernames.ToArray()); metroTextBoxUsername.AutoCompleteCustomSource = colValues; } else if (comboBoxAccType.Text == "Doctor") { List <string> usernames = u.getDoctorUsername(); //metroTextBoxPatientId AutoCompleteStringCollection colValues = new AutoCompleteStringCollection(); metroTextBoxUsername.AutoCompleteMode = AutoCompleteMode.SuggestAppend; metroTextBoxUsername.AutoCompleteSource = AutoCompleteSource.CustomSource; colValues.AddRange(usernames.ToArray()); metroTextBoxUsername.AutoCompleteCustomSource = colValues; } else if (comboBoxAccType.Text == "Receptionist") { List <string> usernames = u.getReceptionistUsername(); //metroTextBoxPatientId AutoCompleteStringCollection colValues = new AutoCompleteStringCollection(); metroTextBoxUsername.AutoCompleteMode = AutoCompleteMode.SuggestAppend; metroTextBoxUsername.AutoCompleteSource = AutoCompleteSource.CustomSource; colValues.AddRange(usernames.ToArray()); metroTextBoxUsername.AutoCompleteCustomSource = colValues; } }