从数据库中检索登录后

Question

我使用Visual Studio 2010中的角色列值和Windows窗体在C＃应用程序。 该应用程序正常工作我可以完美登录，并获取用户名登录到下一个表单，这是登录成功后打开的菜单表单。 现在我的问题是我要检查登录的用户是否是经理还是取决于存储在数据库中的角色列中的值管理，这样的话我可以禁用Admin用户的某些功能。 任何想法或帮助指引我到正确的地方吗？ 我希望我的问题是清楚的

我有一个表叫向tblUsers在那里我有以下字段：

userId 
Username 
Password 
FirstName 
LastName 
Mobile 
Landline 
Address 
Email 
Role 

// clsLoginCollection：

 public Boolean Login(clsLogin Login) 
     { 
     clsDataConduit logincheck = new clsDataConduit(); 
     logincheck.AddParameter("Username", Login.username); 
     logincheck.AddParameter("Password", Login.password); 

     logincheck.Execute("sproc_tblUser_Login"); 

     if (logincheck.Count > 0) 
     { 
      return true; 
     } 
     else 
     { 
      return false; 
     } 
    } 

//存储过程：

ALTER PROCEDURE sproc_tblUser_Login 
@Username varchar(10), 
@Password varchar(10) 

AS 

select Username, Password from tblUsers where Username = @Username AND Password = @Password 

// clsLoginform：

private void btnLogin_Click(object sender, EventArgs e) 
    { 
     Boolean b = false; 

     if ((String.IsNullOrEmpty(tbUsername.Text)) || (String.IsNullOrEmpty(tbPassword.Text))) 
     { 
      MessageBox.Show("Username or Password Cannot Be Blank.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Warning); 
     } 
     else 
     { 
      clsLoginCollection l = new clsLoginCollection(); 
      clsEncryption encrypt = new clsEncryption();// this class have the encryption method 
      b = l.Login(new clsLogin(tbUsername.Text, encrypt.Encrypt(tbPassword.Text))); 

      if (b == true) 
      { 
       MainMenu m = new MainMenu(tbUsername.Text, tbPassword.Text); 
       m.Show(); 
       this.Visible = false; 
      } 
      else 
      { 
       MessageBox.Show("Invalid Login Details", "Error Message", MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button2); 
      } 
     } 
    } 

// clsLogin完全

public class clsLogin 
{ 
    private Int32 UserID; 
    private string Username; 
    private string Password; 
    private string FirstName; 
    private string LastName; 
    private string Mobile; 
    private string Landline; 
    private string Address; 
    private string Email; 
    private string Role; 

    public clsLogin() 
    { } 

    public clsLogin(string UserName, string Password) 
    { 
     this.username = UserName; 
     this.Password = Password; 
    } 

    public clsLogin(string UserName, string Password, string FirstName, string LastName, string Mobile, string Landline, string Address, string Email, string Role) 
    { 
     this.username = UserName; 
     this.Password = Password; 
     this.FirstName = FirstName; 
     this.LastName = LastName; 
     this.Mobile = Mobile; 
     this.Landline = Landline; 
     this.Address = Address; 
     this.Email = Email; 
     this.Role = Role; 
    } 

    public Int32 userID 
    { 
     get { return UserID; } 
     set { UserID = value; } 
    } 

    public string username 
    { 
     get {return Username;} 
     set {Username = value;} 
    } 

    public string password 
    { 
     get {return Password;} 
     set {Password = value;} 
    } 

    public string firstName 
    { 
     get { return FirstName; } 
     set { FirstName = value; } 
    } 

    public string lastName 
    { 
     get { return LastName; } 
     set { LastName = value; } 
    } 

    public string mobile 
    { 
     get { return Mobile; } 
     set { Mobile = value; } 
    } 

    public string landline 
    { 
     get { return Landline; } 
     set { Landline = value; } 
    } 

    public string address 
    { 
     get { return Address; } 
     set { Address = value; } 
    } 

    public string email 
    { 
     get { return Email; } 
     set { Email = value; } 
    } 

    public string role 
    { 
     get { return Role; } 
     set { Role = value; } 
    } 
} 

Answer 1

这是我回答这个问题我也问过。我已经使用RIKKI提供b

// clsLoginCollection查询（补充说，返回的作用的新方法）

public string CheckRole(clsLogin Rolecheck) 
    { 
     string Role; 
     clsDataConduit dataconduit = new clsDataConduit(); 
     dataconduit.AddParameter("@Username", Rolecheck.username); 
     dataconduit.AddParameter("@Password", Rolecheck.password); 
     dataconduit.Execute("sproc_tblUsers_FilterByRole"); 

     Role = dataconduit.QueryResults.Rows[0]["Role"].ToString(); 

     return Role; 
    } 

和我Login.cs类，我创建了一个字符串变量来保存结果此方法

string role = "" 

和下方的

logindetails = l.Login(new clsLogin(tbUsername.Text, encrypt.Encrypt(tbPassword.Text))); 

的我已经加入此代码

roleofuser = l.CheckRole(new clsLogin(tbUsername.Text, encrypt.Encrypt(tbPassword.Text))); 

所以这个“roleofuser”会，如果用户是管理员，经理等不同的角色，并返回然后用if/else语句的IAM能够将它们重定向到正确的形式

感谢 刚万一有人被困在这个特定的问题

Answer 2

像这样的事情？

SELECT Role FROM tblUsers WHERE Username = @Username