Web Forms :: What Is Global.asax / How To Use It
Jan 27, 2010I want to make All Methods about Error handling in asp.net some one device me at using global.asax what is global.asax?
how can i use it ?
I want to make All Methods about Error handling in asp.net some one device me at using global.asax what is global.asax?
how can i use it ?
I know there is a couple answered questions on here regarding "request scoped" globals, but I want to nit-pick on something specifically and maybe squeeze some extra enlightenment out of one or two of you.I have an ASP.NET C# Website and a static Dictionary of objects (loaded from DB once on Application start). Each page request will need to do a lookup in the Dictionary (based on a key derived from the request url/etc) and get the appropriate object.The issue is I'm trying to maximize efficiency by reducing the lookups to the Dictionary per Request. Doing just a single lookup within a Page itself is easy enough and I can pass the object to sub controls, etc too.. but global.asax is separate from the Page and it also needs to use the object (in Application_BeginRequest and Session_Start).
So is doing a Dictionary lookup once in Application_BeginRequest, once (when necessary) in Session_Start and once in the Page negligible speed wise, even if there are many requests coming in every second?I would like it if I could just have a Request scoped global variable that I can easily call upon.. the only one I see available though is HttpContext.Current.Items and that is a Dictionary itself.Am I beingridiculously nit-picky with my concern over efficiency? or will these milliseconds (nanoseconds?) get me in the long run when more and more requests are being made?
PS. I currently only have around 100 objects in the Dictionary although this may increase in the future.
I was given a web app written in VB.net. I am using VS2008. The project has a Global.asax page with Enums declared
Example:Public Enum eCurrentLoc as Integer
Admins
AdminTools
Home
LogIn
Status
End Enum
But in the web application itself I get errors on this line of code:
Ads = Global.eCurrentLoc.Admins
I get the blue scwigly line under Global.eCurrentLoc
The error states 'eCurrentLoc' is not a memeber of '<Defaults>'
I am using a Global.asax in on my webpage to run a function with an interval. In this test I have set the interval to 1 minute to be able to see what happens.
I have declared a timer in the Application Start which should mean that when I open up the webpage after I have uploaded the Global.asax the timer will start.
However with this code below where I try to create a file named newFile.txt, this file is not created. I cant really understand what I could be missing. It seems that the function is not running ?
[Code]....
I have a Global.Asax and Global.Asax.cs file that is specific to my particular Asp.net project. For some unknown reason the code in my Global.asax.cs file is not being executed. I thought that the breakpoints were being ignored, however that is not the case. Because if I try to deliberately force an error to occur, the code is never executed. Below is an example of what I am talking about. The real code in my Application_Start method is not shown below. ANd other methods are not shown as well.
I have tried renaming the Global.asax file and then re-creating it, and that did not work either. Strange because when I try and create a new Global.asax file, the option to create a code behind file is greyed out.
Why isn't my Global.Asax.cs code being executed?
private void Application_Start(object sender, EventArgs e)
{
int x = 1;
int y = 1;
int z=1/(x-y)
}
Global.asax
void Application_Error(object sender, EventArgs e)
{
Exception err = Server.GetLastError();
Session["error"] = err.InnerException.Message;
}
web.config
<customErrors mode="On" defaultRedirect="CustomerPage.aspx"></customErrors>
CustomerPage.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
if (Session["error"] != null)
{
Response.Write(Session["error"].ToString());
}
It does not work. How to call a procedure?
my Global.asax file looks like this -
[Code....]
From some reason that I am not aware of Application("vCounter") reset to its initial value (0) every hour (i think).
I have an asp.net 4.0 application that is using forms authentication set to a timeout at 45 minutes. I would like to redirect the user to a timeout page when the session has expired. Can anyone tell me how to do this? I am running .net 4.0.
web.config has:
<authentication mode="Forms">
<forms name=".ASPXAUTH" loginUrl="~/Login.aspx"
defaultUrl="~/Default.aspx" protection="All" timeout="45"
requireSSL="false">
</forms>
</authentication>
Global.asax.cs file has:
void Session_End(object sender, EventArgs e)
{
Response.Redirect("~/Timeout.aspx");
}
In my company app they are doing the following. I do not understand that what initialize does? Do we need to Initialize assemblies before using them? and what kind of assemblies needs to be initialized?
Below is the code:
[code]....
Just for kicks, how do you say, wire up an ASP button to purposely throw an Application_Error exception in the global.asax file?
lets say you wanted to test the functionality of the error handling and what is doing..and you don't have a real error to do it. what is the easiest way just raise this event?
I am redirecting user from http to https if page is not secure from global.asax file in application_Begin event
But there are some pages in which i don't want to redirect to https page. I want to detect any form element which will tell me weather page should be secured or not. but when i check Requet.Form[_Viewstate] it gives me null value. Right now i check like Request.PhysicalPath.ToLower().IndexOf("test.aspx") ==-1 && !page.IsSecureConnection-> redirect to secure page but in future there will be more page which should be on http.
Is there any general way to redirect to https if page i added any hidden field on page "hfIsHttps=1" and detect that element if 1 then go other wise don't go Following is my code global.asax in application_Begin event
[code]....
I want, instead of hard core check for perticular page there should be general way, like each page itself should tell weather it should be for http or https
I have a ASP.NET/C# web application. There is an object instantiated in the Global.asax that I'll call g_objVariable. What I would like to do is reference one of it's properties in the ASP.NET page itself, like this.
The g_objVariable's Prop1 value is: <%=AppNameSpace.Global.g_objVariable.Prop1.ToString()%>
I get it to see the reference, but it keeps telling me that due to it's protection level I can't access it. I have it set to 'internal static'. What would be the least level I could set it to, but still allow the page to access it?
My website needs hit counter. i have created hit count in global.asax page, which works fine. Now i wanted to display hit count in all pages. so, do i have to use mater page or function to all in every page.
View 3 RepliesI have added global.asax file in my webservice project. in webservice project i have one class file name as 'Class1.vb' in this class contain some methods() , i want to access those methods from 'class1.vb' in global.asax.vb file. any body knows how to access those methods in global.asax.vb. file
View 5 RepliesI have a method in one class file with defination like this which gets the user id of logged person.
public string GetUserID(HttpRequest req)
{ .... }
I need to call this method in global.asax and save that value in session. I need to use this session value i need to use this Session value and assign that to label in Masterpage. I did not use global.asax before. And what should be the input to method... i have seen only Request is have the returntype HttpRequest. So i thought of giving that.
[Code]....
i am trying to do this is Global.asax file. but this method is not executed when the browser closes. or am i doing something wrong?
I want to protect one file in a subdirectory with Global.asax. (I know that this isn't the conventional way of going about this) but it works on my computer and not on the server.I have a global.asax file in my root dir and Application_BeginRequest checks if the user is requesting a particular file. If they are logged in, it allows access. If they are not logged in they are redirected to the default page.My problem is this: My code works on my personal computer but does not work on the server. Do I have to configure a setting in the web.config or adjust something on the server? Code:
Sub Application_BeginRequest(ByVal sender As Object, ByVal e As EventArgs)
Dim fullOrigionalpath As String = Request.Url.ToString.ToLower
'PROTECTED FILE
If fullOrigionalpath.Contains("/uploads/groups.xls") Then
If HttpContext.Current.User.Identity.IsAuthenticated = False Then Response.Redirect("~/login.aspx")
End If
End Sub
i wrote some code in application start event in global.asax page...
how to call that event in my every .cs page of my project.
I am have declared a session variable in login page of my application. I want to access that session variable in Application_BeginRequest of global.asax file. But I am not able to do it. Could you please suggest how to access the session variable in my global.asax file
void Application_BeginRequest(Object sender, EventArgs args)
{
string language = HttpContext.Current.Application["language"].ToString();
}
I need to set a page (unavailable.htm) whenever any user try to access the website from particular time (i.e 1-2 pm). I am using Application_BeginRequest() to check on the hours and redirecting to unavailable.htm. It does not work because it keeps redirecting endlessly to unavailable.htm. Below is my code :
Sub Application_BeginRequest(ByVal sender As Object, ByVal e As EventArgs)
I'm working on a new C# web application in Visual Studio 2010, and am having problems reading a value in Web.Debug.Config from the GLobal.asax.cs file.
In the Application_Start event I've got the following code:
Application.Add("AppID", ConfigurationManager.AppSettings.Get("AppID"));
I also tried:
Application.Add("AppID", ConfigurationManager.AppSettings["AppID"]);
And in the Web.Debug.Config file I have the following:
<applicationSettings>
<add key="AppID" value="123" />
</applicationSettings>
I also tried:
<appSettings>
<add key="AppID" value="123" />
</appSettings>
And I tried having it in a file path, like so:
<appSettings file="C:MyPathappSettings.config"/>
When running in debugger, I've got a break-point in the Application_Start event in Global.asax.cs. It hits the break point, but in all cases the value coming back from ConfigurationManager is coming back null. What am I doing wrong?
how can we use global.asax in asp.net? and what is that?
View 4 RepliesIs it possible in the global.asax file on session_start to check if a url string exists and it it does insert the string into a sql database? The url would be something link http://www.mysite.com?campaign=january.
I would want to capture the january bit and put that in the database for each visitor that uses that url.
my objective is i want to log all those exceptions on my aspx pages which are handled or unhandled. To do this do i need to write my method in global.asax or how can i do that?
View 1 RepliesHow to page redirect in Global.asax Session_End ?
View 1 Replies