login.cs

一个ASP.NET下的中文内容管理和社区系统

namespace ASPNET.StarterKit.Communities {

    using System;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using ASPNET.StarterKit.Communities;
    using System.Web.Security;

    //*********************************************************************
    //
    // Login Class
    //
    // Represents the user login page which enables
    // users to login to the community.
    //
    //*********************************************************************

    public class Login : SkinnedCommunityControl {
    
        string _skinFileName = "Users_Login.ascx";

        TextBox txtUsername;
        TextBox txtPassword;
        CheckBox chkPersist;
        Button btnLogin;
        Panel pnlInvalidUsername;
        Panel pnlInvalidPassword;
        HyperLink lnkPasswordReminder;



        //*********************************************************************
        //
        // Login Constructor
        //
        // Calls the base SkinnedCommunityControl constructor
        // and assigns the default page skin.
        //
        //*********************************************************************

		public Login() : base() {
            // Assign a default skin file name
            if (SkinFileName == null)
                SkinFileName = _skinFileName;
        }
        

        //*********************************************************************
        //
        // SkinType Property
        //
        // Specifies the skins directory where this page's skin file is located.
        //
        //*********************************************************************
        
        override protected string SkinType {
            get { return "ContentSkins"; }
        }


        //*********************************************************************
        //
        // InitializeSkin Method
        //
        // Retrieves all the controls from the Page Skin
        //
        //*********************************************************************

        override protected void InitializeSkin(Control skin) {
            // Find the Username TextBox
            txtUsername = (TextBox)GetControl(skin, "txtUsername");

            // Find the Password TextBox
            txtPassword = (TextBox)GetControl(skin, "txtPassword");
            txtPassword.TextChanged += new System.EventHandler(btnLogin_Click);
 
            // Find the Persist Checkbox (Optional)
            chkPersist = (CheckBox)GetOptionalControl(skin, "chkPersist");
            
            // Find the Invalid Username Panel
            pnlInvalidUsername = (Panel)GetControl(skin, "pnlInvalidUsername");
            pnlInvalidUsername.Visible = false;
            
            // Find the Invalid Password Panel
            pnlInvalidPassword = (Panel)GetControl(skin, "pnlInvalidPassword");
            pnlInvalidPassword.Visible = false;
                        
            // Find Login Button
            btnLogin = (Button)GetControl(skin, "btnLogin");
    		btnLogin.Click += new System.EventHandler(btnLogin_Click);

            // Find password reminder
            lnkPasswordReminder = (HyperLink)GetControl(skin, "lnkPasswordReminder");
            lnkPasswordReminder.NavigateUrl = "~/Users_PasswordReminder.aspx";
        } 

        
        //*********************************************************************
        //
        // btnLogin_Click Method
        //
        // Checks username and password against database. If 
        // everything checks, logins the user.
        //
        //*********************************************************************
        
        void btnLogin_Click(Object s, EventArgs e) {
            bool blPersist = false;
            
            // Determine whether password should be persisted
            if (chkPersist != null)
                blPersist = chkPersist.Checked;
            
            // Either login or display error message
            switch ( UserUtility.LoginUser(txtUsername.Text,txtPassword.Text) ) {
                case 0: // Success!
                    FormsAuthentication.SetAuthCookie(txtUsername.Text, blPersist);
                    string redirectUrl = FormsAuthentication.GetRedirectUrl(txtUsername.Text, blPersist).ToLower();
                    if (redirectUrl.IndexOf("users_logout.aspx") == -1)
                        Context.Response.Redirect(redirectUrl);
                    else
                        Context.Response.Redirect(CommunityGlobals.ResolveBase("default.aspx"));
                    break;
                case 1: // Invalid Password
                    pnlInvalidPassword.Visible = true;
                    pnlInvalidUsername.Visible = false;
                    break;
                case 2: // Invalid Username
                    pnlInvalidUsername.Visible = true;
                    pnlInvalidPassword.Visible = false;
                    break;
            }    
        }       
 


    }
}