软件工程课程设计报告模板(19)

public class UserBase {

private string userID; public string UserID {

get { return userID; } set { userID = value; } }

private string userPSW; public string UserPSW {

get { return userPSW; } set { userPSW = value; } }

public string loginCheck(string uid, string upwd, string urole) {

String selectStr = String.Empty; switch (urole) {

case "0": //身份为教师时 selectStr = "Select * from Teacher where teaID = '" + uid + "'"; break;

case "1": //身份为学生时

selectStr = "Select * from Student where stuID = '" + uid + "'"; break;

case "2": //身份为管理员时

selectStr = "Select * from Users where adminName = '" + uid + "'"; break; default:

return null; }

Database db = new Database();

DataTable dt = db.GetDataTable(selectStr); if (dt.Rows.Count > 0) //如果该用户存在 {

if (dt.Rows[0][1].ToString().Equals(upwd)) //密码正确 {

switch (urole) {

case "0": //身份为教师时 return "0";

case "1": //身份为学生时 return "1";

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