Application Variables Work The Same In Both ASP And ASP.NET
May 16, 2010
This 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:
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 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?
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?
i 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.
I haven't used the application variables in my asp.net web applications. Im using asp.net2.0. Is there any disadvantages of using applicationvariables.
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:
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?
What 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.
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'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?
If 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?
In 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 am trying to collect 2 variables from one hyperlink, and use those variables in the page_load to set as session. but i don't know how to collect those 2 variables
i would like to collect '#FF0000','#FFE4E1' or direct set '#FF0000','#FFE4E1' to string then send to pageload, how can i do this by only clicking on it ?
I have this code in javascript: var x = e.mapX; It gets the X-coordinate of a map. What I want to do is that I want to store this into a c# variable. I have a class named Test with an integer property X. I want to store var x into X. In the codebehind, I have this on the Page_Load: Test test = new Test(); Then I am trying this on the javascript code: var x = e.mapX;
I'm starting to think about and develop an architecture for a big web application, and I wanted to get suggestions and/or recommendations on which technologies and/or frameworks to use.The application will be an Intranet-based web site using Windows authentication, running on IIS and using ASP.NET. It'll need to be structured as a main web application with sub-web applications. Essentially, the entire scope is a composite browser-based, Intranet application that is composed of discrete, functionally complete modules or sub-applications.
using visual studio 2008 and asp.net 3.5 and DB2. my project will give some of the records to the DataAccess layer to add the data into datbase. Untill the process end i have to wait(it's a big operation) for a long period, what i expect is, i'll hand over the data to DAL and my application will continue further works, how to do that?
i use visual studio 2010, SQL express 2008 on win server 2008
after running the wizard of security (created single user, set permissions like deny anonymous and allow the created user) and pressing F5 --> the site works just fine.
when i move the folder to IIS 7 and "convert to application" the login page appears but it wont accept the password i provided.
i was told that only Stackoverflow geniuses will answer this question.
i am using .Net 4, manged pipleine mode --> inegrated
IIS settings:
Anonymous Auth. --> Enabled Forms Auth. --> Enabled ASP.Net Impersonation, Basic Auth, Digest Auth, Windows Auth--> Disabled
And in the master page there is a ToolkitScriptManager. but the update panel does not work never similar to they do not exist.
Note: I use .Net 4.0.
Edit: I removed the ToolKitScriptManager and added ScriptManager and the problem still exists. Seems the Ajax functionality is disabled in my application but I do not know how.
I have a Website on IIS 7.5 configured as shown below.
ParentWebSite ---ChildWebApp ParentWebSite is an Asp.Net 4.0 Website project. ChildWebApp is an Asp.Net 4.0 Web Application.
When I access the following url it works fine.
http://ParentWebSite/
When I access the childWebApplication using the following Url.
http://ParentWebSite/ChildWebApp
It gives a compilation error showing one namespace (ParentWebSite.BLL) not found. But that namespace is used only in ParentWebSite and not at all referred in the ChildWebApp.
My question why is my ChildWebApp dependent on the ParentWebSite dll?
Is not the ChildWebApp when deployed as above independent of the ParentWebSite when both are using there own App Pool?
whats the exact use of static variables in overall programming in .net and for asp.net...
Recently i went for the interview where interviewer asked me 2 question which i was not sure for the same..
whats the use of session object, i said sessions are the server side object, they are used when you want to store user specific data at server side, then he asked what if i want to use static variables for the same, i was mum, can anyone tell me how asp.net will behave if i store the user specific information in static variables.If i use cookies which are the best option to store the data at client side (not sensitive one), but what if user has disabled cookies on his machine, will my application would crash.
