Get Exception Error If Logged In User Is Inactive?
Oct 6, 2010
If a logged in user is inactive on the page for more than 20 minutes and thenclicks a button to cause post back they get the error below.Server Error in '/' Application.Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.Description:An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.Exception Details: System.Web.HttpException: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster
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Similar Messages:
Dec 5, 2010
I have a site where the admin can log in to make changes to his content, but while making changes (using a specific asp.net control) with no page loads or callbacks while editing, the user is sometimes being logged out.
I want to increase the time it takes for the system to wait before logging-out inactive users.
I'm using the standard membership provider.
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Jan 26, 2010
I want to check that the user trying to log-in is authenticated and it belongs to a certain role. For this I have wrote the following code
protected void btnLoginButton_Click(object sender, EventArgs e)
{
/
if (this.User.Identity.IsAuthenticated && this.User.IsInRole("Admin"))
{
Response.Redirect("~/Admin/Default.aspx");
}
if (this.User.Identity.IsAuthenticated && this.User.IsInRole("Editor"))
{
Response.Redirect("~/Editor/Default.aspx");
}
if (this.User.Identity.IsAuthenticated && this.User.IsInRole("Moderator"))
{
Response.Redirect("~/Moderator/Default.aspx");
}
}
But when I ran this code it gave me this error error CS1061: 'Page' does not contain a definition for 'User' and no extension method 'User' accepting a first argument of type 'Page' could be found (are you missing a using directive or an assembly reference?) I have already added following directives to cs page-
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
Can anybody tell what directie I should add for "this.User" <P.S> My application is web based and it is in ASP.Net 3.5(C#).
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Feb 28, 2010
This is my approach : I reserve last time that a user post a postback to server in a session and in every postback subtract this value from current value. Is there a better way for this?
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Sep 24, 2010
I have a CreateUserWizard that uses the membership provider and creates a user in a sql server database.I need to change the IsApproved property on creation to false.I know that it can be done by createing a custom navigation template... but then i will have to code all the checks for the creation of the user...Is there any other way to access that attribute?this is the aspx code:
[Code]....
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Jul 11, 2012
You can for example enter the length and width of the web (VS.NET2005), when it runs out of range index error exception was unhandled by user code for chieudai
Code:
public class Tinh
{
private Int32 _quanhuyen;
private String _diachiNha;
private Double _chieudai;
private Double _chieurong;
private Double _dientichDat;
}
[Code] ....
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May 10, 2010
I am working on a asp.net 3.5 app. In the Global.asax in the Application_Error method, I am logging everthing to ddatabase (log4Net).
I have a session limit of 20 minutes. What happens when the user hits that limit and then clicks on the Submit Button of the app. ?Will that generate any exception? and will that exception be logged into my database as I am logging all exceptions in my Application_Error method.
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Jun 22, 2010
Im using Visual Studio 2010. I'm new to asp.net. I'm trying to do a simple user login page but whenever I try to launch the Web Administration tool, I keep getting some exception error. The below images is the error I encountered.
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Nov 19, 2010
I'm trying to throw the exception back to Page_Load but the throw statement causes error: ArgumentNullException was unhandled by user code. How can that be fixed? Also, I can't see Label1.Text displayed on the page after the ArgumentNullException occurs because the page is not re-load. If there is no exception, it's fine to not reload the page. How can I see the Label1.Text displayed?
protected void Page_Load(object sender, EventArgs e)
{
try
{
...do something here...
}
catch (ArgumentNullException ae)
{
System.Diagnostics.Debug.Write(ae.Message);
Label1.Text = ae.Message;
Label1.Style.Add("visibility", "visible");
}
catch (Exception ex)
{
...do something here...
}
}
protected void ImageButton1_Click(object sender, ImageClickEventArgs e)............................
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Aug 3, 2010
I am working on a 3-tier asp.net application. Currently I'm stuck up in a situation where I need to handle a specific type of exception (User Defined) in DAL and Show alert to the user if that exception occurs in DAL.
I tried following things:
1) I raised that exception from the DAL and catch it in BLL and throw a new BLL exception to for that DAL exception and finally catch it in the UI layer to show the alert to the user. I've successfully implement this in my project. But there are some issues in this approach. First of all I feel this is not right way to do this as it may lead to performance related issues. Secondly, the application contains more than 500 pages and classes. so I need to attach additional catch block in every method to catch the BLL exception. which is the last option i'd like to take.
2) in second approach I logged the the DAL exception into a text file. but problem in this approach is that how could the UI layer know that exception has occurred and show the alert to the user. Is there any event in asp.net where i could handle all this activities?
my question is what is the best approach to handle this type of situation? Will Exception handling block help me in this?
I've tried reading many articles on this but i couldn't get an answer for my question? I might not be using right keywords for my search.
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May 7, 2015
I would like users to upload a profile picture when they register, and to then show that picture in a picture box control when they are logged in based on that specific user.
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Jan 7, 2011
I deployed a website where a logged user or an anonymous user can select data and download a XML file. The website generate the XML file in the server and then deliver it.
It works fine in my development environment, but after deployment, the anonymous user can download the file, but the logged user receive this error:
System.UnauthorizedAccessException: Access to the path 'd:HostsLocalUserheringerwebsiteUpload20110107094051.xml' is denied.
It is weird that as anonymous i can do it.
The website server help states this:
"Grant write, modify, delete access rights on website's folder
Your website executes under unique user account that by default has full control over the website's folder.
So your application can create, open, read, write and delete files and folders inside of your root folder.
There is no need and no way to change this permissions.
If, when running ASP.Net application, you still unable to create file or update it, you have to check your Web.Config file for "<Identity impersonate..." tag and remove it.
The only exception is when the application tries to modify a file or folder in "Application_Start" event of Global.asax file. This is by design that user authenticated only after the Application_Start even. Before the user is authenticated your website runs under an identity of Application Pool which is "Network services". That account doesn't have access to the folder of your website.
To make it work you eather have to move the code that tries to modify files or folders out of the "Application_Start" event of the Global.asax file or inside the event you'll need to impersonate your user by code."
But i am not using impersonate and the tag is not in my web.config.
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Mar 4, 2010
I have the membership provider and the create user with tow steps, one of the steps contains a custom registration form, for each created user data will be in the database, and there is an account page shows the data that the new created user did insert during the registration process on the custom registration page,
the problem, when the user is created and logged into his account page, this account page shows only the information for the first created user, not the info on the logged in user , but the logged in user data still saved in database and not showing on his account page?
This is web.confg code:
<?xml version="1.0"?>
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Jun 6, 2013
I have table called ROLE with fields (id,name,permission) example values (1001,madhu,hr)
I have another table called LOGIN with fields(id,DOB,password) example values(1001,24101989,madhukumar)
What i want is , if i login using the LOGIN table ,it check the id and permission in the ROLE table , if the permission is 'hr' it enable to access the menu , or if the permission is any other it just print the error message ("no permission")
Note: menu is placed in master page , but login is not in the master page ...
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May 7, 2015
I've made a membership by create user wizard. everything is good but after click on finish register button, when page redirect to index .aspx, this page thinks tht user logged in. whereas user didnt login just added to DB.here is the code:
protected void CreateUserWizard1_NextButtonClick(object sender, WizardNavigationEventArgs args)
{
try
{
Membership.CreateUser(CreateUserWizard1.UserName, CreateUserWizard1.Password, CreateUserWizard1.Email);
Response.Redirect("index.aspx");
[code]...
in index.aspx just have a login name and login status control. tht's it.
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Apr 2, 2010
I would like to change the logged in user to another user temporarily to do some process.
For example, say I am logged in as "Joe". In my method, I want to make the logged in user from "Joe" to "SuperUser", do some process, then change the logged in user back to "Joe".
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Aug 20, 2010
is there anyway I could create a function that receives and username and the function returns if the user is currently logged in into the application?
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Jul 2, 2012
I am trying to handle the unhandled exceptions in my project.I tried with this following code in my web.config filebut it is not at all redirecting to an error page which i have created instead of that it is throwing an exception in my code itselef. How to print the error description over therein my custom error page.
---------------------------------------------------------------------------------------------------
<sys.web>......<customErrors mode="On" defaultRedirect="~/Error.aspx"></customErrors>...</sys.web>
---------------------------------------------------------------------------------------------------
And even i tried in Global.asax page in Application_Error() method like below
Exception ex = Server.GetLastError();Response.Redirect("~/Error.aspx?errmsg="+ex.message);Server.ClearError();
And in my Error.aspx.cs page i have placed a label and i have written code like this
protected void Page_Load(object sender, EventArgs e) {
Label1.Text=Request["errmsg"];
}
But it is not getting redirected my error page and not displaying anything on it.
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May 10, 2010
when the user comes to the login page I need to validate whether he is already logged in or not..how I can validate it..can anyone give sample.
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Oct 25, 2010
I thought this would be a simple task as I am trying to get the current logged in domain user name. I have the following:
[Code]....
but it ALWAYS returns nothing ""
Is there some configuration in the ASP that I have to do first?
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Sep 1, 2010
Our users are only only allowed to log into our site from one location at a time. If they attempt to login from a second location, how do I log them out of the first location?
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Feb 4, 2010
I have a controller that gets data based on current user that is logged in. And I would like to assign a local variable like this:
[Code]....
Somehow I cant get the value for current user logged in. How should I fix this? I need to use that "CustomerID" in lots of places in my controllerclass.
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Dec 5, 2010
I am using Microsoft visual basic 2010 for a asp.net site using c#.
I am using the asp.net configuration for user registration. I have a comments form which I want to appear only if a user is logged in.
I now there is a toolbox helper thing called Login View which does exactly what I want but as soon as I put a form inside the code won't compile because it cannot find the textbox fields.
I have the following in NewsArticle.aspx:
<asp:LoginView ID="LoginView1" runat="server">
<AnonymousTemplate>
<div class="postcomment">[code]....
If I take the form out of asp:LoginView it works fine. Inside I get the following:
Error 2 The name 'txtTitle' does not exist in the current context NewsArticle.aspx.cs 59 53 Figmentville
Error 3 The name 'txtComment' does not exist in the current context NewsArticle.aspx.cs 59 68 Figmentville
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Jun 2, 2010
I need to check if the user is logged in at any page, and if not, redirect to Account/LogOn.
An awful way to do it is by adding this code at the beginning of every method in the controllers:
[Code]....
But I hate repeating code so many times. Is there any way to make this check from a single place?
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Dec 4, 2010
How can I get the exact ID of a user that is logged into a site?
I'm using the login and registration controls created by Visual Studio 2010, in the database the unique identifier is in this 28e8957e-00b8-4e75-bec9-2b90e640962d for example how can I return the exact one to be used in an SQL command for example?
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