Access "Application" Object In MVC To Store Application Wide Variables?
Aug 7, 2010How do I store a variable or object application wide in ASP.net MVC. In regular ASP, you had the Application object, and in ASP.net too apparently.
View 1 RepliesHow do I store a variable or object application wide in ASP.net MVC. In regular ASP, you had the Application object, and in ASP.net too apparently.
View 1 RepliesWhat is the recommended or usual way an ASP.net web application(in C# language) can store/access values that are needed accross the various pages in a website. For example a basic company website might need the company's name and other related information available to multiple pages. Where do I declare these variables/values and how do I access them. Coming from c++ application programming I would usually store such data in a Singleton class object.
View 5 RepliesIn an ASP.NET web app written in VB.NET, I need to load and store a large read-only hash table that is frequently accessed by the application. It only needs to be loaded once on application start, is never updated and can be accessed by any session at any time.
If I load the hash table into a private member in a (global) module, a lookup to it takes one 20th of the time compared to storing the hash table in the Application or Cache object. Is there any reason why I should not do this, or should Application or Cache always be used to store in-memory objects in an ASP.NET web application?
I know I can allow the web service access to Session variables by adding (EnableSession=true). Is there a way to allow it access to global Application variables?
I have several resource intensive variables that are loaded in the Global.asax and I need access to there in the webservice.
I want a separate config file (not app.config) that stores style for various controls in my web application. For example i want to specify the CSS file that modifies all instances of GridView in the website. what is best practice?
View 2 Repliesi added this entry in my web.config file
pages
masterPageFile="~/default.master"
so that all my content pages (.aspx) in my application could use default.master as their master page,
i read we do this so that we don't have to mention the MasterPageFile="~/default.master" everytime in all the .aspx content pages, but , my query is whenever i add a new .aspx page in my website from VS 2010, it dosen't automatically add MasterPageFile="~/default.master" to the Page header, am i missing something.
I need to keep access settings to different web pages inside of my asp.net application. These setting are logins and passwords for those pages. Is it safe enough to keep them in web.config in section?
View 1 RepliesI have some global settings in my application that is going to be handled by the administrator and I store them in the database.
Settings like: board on/off, max items/page on different UserControls, language, hide/show modules.
What technique should I follow to read the values in the database and display the page or the application according to it .. Of course I could do it the easy way and fetch the required settings for each page in the Page_Load event handler but I think that will be a lot of database connection!
store our DAO objects in the Application object, so there's one object of each available for the whole application.
This Application object is easily accessed in the Page codebehind itself, but how do we access it from a plain class that is not extending anything?
I have to implement broker and dealer socket connection like in share market i.e. it should connect at 9 AM and stop at 3.30 PM and repeat in next morning ...
so following is my requirement
1) i have to create application object once in day at 9 AM and destroyed at particular end day 3.30 PM.
My question is how to destroyed application object at given particular time ... i think this can be done in application_end handler in global.asax ... but my question is when no request is made at that time then what happened..
I have an application in which a user can choose from different (learning)groups. User has only access to registered groups. When the user enters the site, he can choose (in a dropdown) which group he wants to see, so the complete site filters content related to that group. So every controller needs to access this global "group" object.What is the best way to do this in ASP.NET MVC? I've thought about a BaseController or ActionFilters. Is there any other best practice?I've build a WebForms application and there I used a BasePage so that any other page has access to the group.
View 2 RepliesWe have an ASP.NET 3.5 Web application in which we have faced the below issue:
The application is working fine but suddently at one point application URL prompts for the authentication. When we (the support team) checked the server, we were able to identify that the access was denied for some of the main files (like web.config, default page). When we enabled the access the application started working fine.
I cant figure out how to use the Application["myvar"] variable to store data for the application in asp.net 4.0 web app using c#. It say Application is not a known object and I can't for the life of me figure what to do a "using" on to expose it. I am in a static class at the time I cant use it. It seems to work in other units?
View 3 RepliesThis question actually refers to a classic ASP page I'm working on, but I'm assuming that app variables work the same in both ASP and ASP.NET Let's say we have a bunch of websites, owned by different people. The sites are all different, but the common theme is they are car enthusiast websites. Each of these websites has their own unique index page (of course), but also "common" pages, which are pages shared by all the websites.
One of the common pages, checks for the value of an application variable, which may or may not exist. For example, lets call this page luxurycars.asp, which is a simple page that shows the top 10 luxury cars of this year. This common luxury car page will pull and use the app variable like so:
[CODE]
Dim SiteOwner
SiteOwner = Application("OwnerName")
Response.Write("This site is managed by " & SiteOwner)
[/CODE]
This app variable is set uniquely in each clients index.asp page like so:
[CODE]
Application("OwnerName") = "John Doe"
[/CODE]
Will this work? I just started learning classic ASP (for my job), and I'm reading that application variables are universal and only one copy of the variable will exist. So does this mean if John Doe sets Application("OwnerName") to "John Doe" in HIS index.asp page, will everyone that visits the common luxury car page see John Doe's name? Regardless of whether they got to that page via John Doe's page or someone elses? And if so would using a Session variable instead solve this problem? Sorry if this sounds confusing, let me know if I need to re-word it or give more detail...
I store a large structure holding my application's reference data in a variable I access through HttpContext.Application. Every once in a while this data needs to change. When I update it in place, is there a danger that incoming requests will see the data in an inconsistent state? Is there a need (and a way) to lock some or all of this structure? Finally, are there other approaches to this problem other than querying the database every time you need this (mostly static) data?
View 3 Repliesi am developing a website in asp.net i have created a class "Utility" in App_Code Folder this class contains a static object of another class(LoginInfo) as described below:
[Code]....
This LoginInfo Class is my business object which only contains 2 properties UserID and UserName
Now what i am doing on my login page, after user authentication i am setting these properties with current logged in UserId and UserName
[Code]....
I am using this CurrentUser object on my webpage to get userid and username. It works fine, but after few minutes my CurrentUser.UserID and CurrentUser.UserName is set to blank string. I am not able to figure out what is the problem. may be due to asp.net recycles.
im new to asp.net. . . im doing my final year project.How to use session variables in application using VC# and I also need to check with data base?
View 2 RepliesI haven't used the application variables in my asp.net web applications. Im using asp.net2.0. Is there any disadvantages of using applicationvariables.
View 1 RepliesI set up various global parameters in Global.asax, as such:
Application["PagePolicies"] = "~/Lab/Policies.aspx";
Application["PageShare"] = "/Share.aspx";
Application["FileSearchQueries"] = Server.MapPath("~/Resources/SearchQueries.xml");
I have no problem accessing these variables form .ascx.cs or .aspx.cs file -- ie. files that are part of the Web content. However, I can't seem to access 'Application' from basic class objects (ie. standalone .cs files). I read somewhere to use a slight variations in .cs files, as follows, but it always comes throws an exception when in use:
String file = (String)System.Web.HttpContext.Current.Application["FileSearchQueries"];
Every time I build my web application, my session variables are lost from before the build. Is there anyway to preserve session variables during the build?
View 3 Replieshow to migrate an existing database from a specific application to a new Ms Access based application(database)?
View 4 RepliesI am trying to run the 15 minutes movies MVC application but I got the following error:
Object reference not set to an instance of an object.
Description:
An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
[Code]....
I'm developing a server control and I'd like to set some cache and application level variables but I don't want them to be visible from outside the control. Is this possible?
View 1 RepliesIf I have a 2 control load events and one page load event subs and the control1_Load events fires first, can I lookup some database things and persist them? I would like to use the persisted data in the other two events when they fire. Normally I've been using session variables , is there a better way?
View 3 RepliesIs it safe to access asp.net session variables through static properties of a static object?Here is what I mean:
public static class SessionHelper
{
public static int Age
{
get
{
[code]...
Is it possible that userA could access userB's session data this way?