/// <summary>
/// login window uses this method to authenticate user
/// </summary>
/// <param name="username">username supplied by user</param>
/// <param name="password">password supplied by user</param>
/// <returns>
/// if authentication is successful, Candidate or Admin object is returned according to user type,
/// otherwise null
/// </returns>
public static User authenticateUser(String username, String password)
{
//get user
CTVIATBankDataSet.UsersDataTable table = usersAdapter.GetUserByUserNameAndPassword(username, password);
//if no user with supplied credentials, return null
if (table.Rows.Count == 0)
{
return(null);
}
//otherwise create user object
else
{
DataRow row = table.Rows[0];
if (Convert.ToByte(row["userType"]) == 1)
{
return(new Admin(Convert.ToInt32(row["userID"]), Convert.ToString(row["userName"]),
Convert.ToString(row["userPassword"])));
}
else
{
return(new Candidate(Convert.ToInt32(row["userID"]), Convert.ToString(row["userName"]),
Convert.ToString(row["userPassword"])));
}
}
}
/// <summary>
/// Used to get information of all candidates
/// </summary>
/// <returns>
/// Arraylist of candidate objects
/// </returns>
public static ArrayList getAllCandidates(String pattern)
{
CTVIATBankDataSet.UsersDataTable table = usersAdapter.GetCandidates("%" + pattern + "%");
ArrayList users = new ArrayList();
foreach (DataRow row in table)
{
users.Add(new Candidate(Convert.ToInt32(row["userID"]),
Convert.ToString(row["userName"]), Convert.ToString(row["userPassword"])));
}
return(users);
}
/// <summary>
/// Username is unique, user object is created by querying username
/// </summary>
/// <param name="userName">username of user</param>
/// <returns>
/// User object
/// </returns>
public static User getUserByUserName(String userName)
{
CTVIATBankDataSet.UsersDataTable userTable = usersAdapter.GetUserByUserName(userName);
if (userTable.Count == 0)
{
return(null);
}
else
{
if (userTable[0]["userType"].ToString() == "1")
{
return(new Admin(Convert.ToInt32(userTable[0]["userID"]),
Convert.ToString(userTable[0]["userName"]), Convert.ToString(userTable[0]["userPassword"])));
}
else
{
return(new Candidate(Convert.ToInt32(userTable[0]["userID"]),
Convert.ToString(userTable[0]["userName"]), Convert.ToString(userTable[0]["userPassword"])));
}
}
}
/// <summary>
/// Used to get information of all users
/// </summary>
/// <returns>
/// Arraylist of user objects
/// </returns>
public static ArrayList getAllUsers()
{
CTVIATBankDataSet.UsersDataTable allUsersTable = usersAdapter.GetAllUsers();
ArrayList users = new ArrayList();
foreach (DataRow row in allUsersTable)
{
if (row["userType"].ToString() == "1")
{
Admin temp = new Admin(Convert.ToInt32(row["userID"]),
Convert.ToString(row["userName"]), Convert.ToString(row["userPassword"]));
users.Add(temp);
}
else
{
Candidate temp = new Candidate(Convert.ToInt32(row["userID"]),
Convert.ToString(row["userName"]), Convert.ToString(row["userPassword"]));
users.Add(temp);
}
}
return(users);
}
