Я хочу автоматически войти в систему моих пользователей на page_load главной страницы, если имя пользователя и пароль существуют в файлах cookie!
поэтому я написал код ниже:
protected void Page_Load(object sender, EventArgs e)
{
LoadDataFromCookieIfExistAndLogin();
}
private void LoadDataFromCookieIfExistAndLogin()
{
string Query = Request.Url.Query.ToString();
string[] Ar_Query = new string[2];
string[] splitter = { "%2f" };
Ar_Query = Query.Split(splitter, System.StringSplitOptions.None);
string[] Ar_new_Query = new string[2];
int minLength = Math.Min(Ar_Query.Length, Ar_new_Query.Length);
Array.Copy(Ar_Query, Ar_new_Query, minLength);
if (string.IsNullOrEmpty(Ar_new_Query[1]))
{
Ar_new_Query[1] = string.Empty;
}
if ((Request.QueryString["ReturnURL"] != null) && (Ar_new_Query[1].ToString().ToUpper() == "ADMIN"))
{
Session.Clear();
FormsAuthentication.SignOut();
}
else if ((Request.QueryString["ReturnURL"] != null) && (Ar_new_Query[1].ToString().ToUpper() == "ELMAH.AXD"))
{
Session.Clear();
FormsAuthentication.SignOut();
}
else
{
HttpCookie Situation_Cookie = Request.Cookies["Situation"];
if (Situation_Cookie != null)
{
if (Situation_Cookie["Login"] == "Yes")
{
HttpCookie Data_Cookie = Request.Cookies["Data"];
if (Data_Cookie != null)
{
string UserName = Data_Cookie["UserName"].ToString();
string PassWord = ata_Cookie["PassWord"].ToString();
string HashedPass = FormsAuthentication.HashPasswordForStoringInConfigFile(PassWord, "MD5");
DataSet dsUsers = DataLayer.Users.SelectRowForLogin_FromCookie(UserName, HashedPass);
if (dsUsers.Tables["Users"].Rows.Count > 0)
{
DataRow drUsers = dsUsers.Tables["Users"].Rows[0];
if (Session["User_ID"] == null)
{
Session["UserName"] = UserName;
Session["Password"] = PassWord;
Session["User_ID"] = drUsers["ID"].ToString();
Session["UserType_ID"] = drUsers["UserType_ID"].ToString();
DataLayer.OnlineUsers.UpdateRow_UserID_By_SessionID(
Session["User_ID"],
Session.SessionID);
}
if (!HttpContext.Current.User.Identity.IsAuthenticated)
{
FormsAuthentication.SetAuthCookie(drUsers["ID"].ToString(), true);
}
}
}
}
}
}
}
также для понимания моих кодов входа я использую RoleProvider Как показано ниже:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Data;
namespace NiceFileExplorer.Classes
{
public class NiceFileExplorerRoleProvider : RoleProvider
{
public override void AddUsersToRoles(string[] usernames, string[] roleNames)
{
throw new NotImplementedException();
}
public override string ApplicationName
{
get
{
throw new NotImplementedException();
}
set
{
throw new NotImplementedException();
}
}
public override void CreateRole(string roleName)
{
throw new NotImplementedException();
}
public override bool DeleteRole(string roleName, bool throwOnPopulatedRole)
{
throw new NotImplementedException();
}
public override string[] FindUsersInRole(string roleName, string usernameToMatch)
{
throw new NotImplementedException();
}
public override string[] GetAllRoles()
{
throw new NotImplementedException();
}
//public override string[] GetRolesForUser(string username)
public override string[] GetRolesForUser(string User_ID)
{
string[] UserTypes = new string[1];
DataSet dsUser = DataLayer.Users.SelectRowWithUserTypeInfo(int.Parse(User_ID));
if (dsUser.Tables["Users"].Rows.Count > 0)
{
DataRow drUser = dsUser.Tables["Users"].Rows[0];
UserTypes[0] = drUser["Name"].ToString();
}
if (User_ID == "-255")
{
UserTypes[0] = "Administrators";
}
return UserTypes;
}
public override string[] GetUsersInRole(string roleName)
{
throw new NotImplementedException();
}
public override bool IsUserInRole(string username, string roleName)
{
throw new NotImplementedException();
}
public override void RemoveUsersFromRoles(string[] usernames, string[] roleNames)
{
throw new NotImplementedException();
}
public override bool RoleExists(string roleName)
{
throw new NotImplementedException();
}
}
}
иногда у меня есть ошибка ниже:
System.Web.HttpException: сервер не может изменять файлы cookie после отправки заголовков HTTP.
System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.Web.HttpException (0x80004005): Server cannot modify cookies after HTTP headers have been sent.
at System.Web.HttpCookieCollection.Add(HttpCookie cookie)
at System.Web.Security.FormsAuthentication.SetAuthCookie(String userName, Boolean createPersistentCookie, String strCookiePath)
at NiceFileExplorer.en.Site1.Page_Load(Object sender, EventArgs e)
at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.HandleError(Exception e)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
похоже, проблема в следующей строке:
FormsAuthentication.SetAuthCookie (drUsers ["ID"]. ToString (), true);
что означает эта ошибка и как я могу ее предотвратить?