All implementation of IHttpModule I've seen looks following:
[code]....
I am wondering why is the Dispose method always empty? Shouldn't we unsubscribe the event which we subscribe in the Init method?
i trying to inject js to page (to tags) by using ihttpmodule.but js isn't injected.
the page:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="MyTempProject._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
[Code]....
I've declared an event on an HTTP Module so it will poll subscribers for a true/false value to determine if it should go ahead with its task of tweaking the HTTP Response. If only one subscriber answers true then it runs its logic.
Are there potential pitfalls I'm not seeing?
public class ResponseTweaker : IHttpModule {
// to be a list of subscribers
List<Func<HttpApplication, bool>> listRespondants = new List<Func<HttpApplication, bool>>();
// event that stores its subscribers in a collection
public event Func<HttpApplication, bool> RequestConfirmation {
[Code]....
What is the difference between HttpApplication class and IHttpModule? Are they both same or different?
I see articles that mention the same events in both the classes.
An IHttpModule implementation I created
public class ResponseTweaker : IHttpModule { // my module ...
is registered in Web.config
<system.web>
<httpModules>
<add name="redman" type="ResponseTweaker"/>
</httpModules>
and an instance of it is sitting in the pipeline.
From the perspective of a caller (e.g. from the Global.asax.cs file), how should I get a reference to that module instance?
public class NHibernateSessionPerRequest<T>:IHttpModule
{
public void Dispose() { }
public void Init(HttpApplication context)
{
context.BeginRequest += BeginRequest;
context.EndRequest += EndRequest;
}
}
How can it be registered in web.config?
LoginPage.aspx:-
protected void Button1_Click(object sender, EventArgs e)
{
Context.Items["Username"] = txtUserId.Text;
Context.Items["Password"] = txtPassword.Text;
//
FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1, Context.Items["Username"].ToString(), DateTime.Now, DateTime.Now.AddMinutes(10), true, "users", FormsAuthentication.FormsCookiePath);
// Encrypt the cookie using the machine key for secure transport
string hash = FormsAuthentication.Encrypt(ticket);
HttpCookie cookie = new HttpCookie(
FormsAuthentication.FormsCookieName, // Name of auth cookie
hash); // Hashed ticket
// Set the cookie's expiration time to the tickets expiration time
if (ticket.IsPersistent) cookie.Expires = ticket.Expiration;
Response.Cookies.Add(cookie);
Response.Redirect("Default.aspx");
}
Global.asax file:-
void Application_AuthenticateRequest(object sender, EventArgs e)
{
if (HttpContext.Current.User != null)
{
if (HttpContext.Current.User.Identity.IsAuthenticated)
{
if (HttpContext.Current.User.Identity is FormsIdentity)
{
FormsIdentity id =
(FormsIdentity)HttpContext.Current.User.Identity;
FormsAuthenticationTicket ticket = id.Ticket;
// Get the stored user-data, in this case, our roles
string userData = ticket.UserData;
string[] roles = userData.Split(',');
HttpContext.Current.User = new System.Security.Principal.GenericPrincipal(id, roles);
Response.Write(HttpContext.Current.User.Identity.Name);
Response.Redirect("Default.aspx");
}
}
}
}
I get the following error after signing in This webpage has a redirect loop.
The webpage at [URL] has resulted in too many redirects. Clearing your cookies for this site or allowing third-party cookies may fix the problem. If not, it is possibly a server configuration issue and not a problem with your computer.
Im trying to make a solution like this [URL] Now the question is how do I filter the request, I only want to Open an ISession if the request is for an ASPNET MVC Action, not for *.gif, *.css etc. How should I handle this filtering?
View 3 RepliesI am getting the following error
'Event handlers can only be bound to HttpApplication events during IHttpModule initialization.' at the following code (line in bold or double **)
protected void Application_BeginRequest(object sender, EventArgs e)
{
HttpApplication app = (HttpApplication)sender;
**app.EndRequest += new EventHandler(Application_EndRequest);**
}
protected void Application_EndRequest(object sender, EventArgs e)
{
UnitOfWork.Commit();
}
which is mentioned in Global.asax file.
I have a page where I load a couple of dropdown lists from the database (DB). I do this by calling a general function that connects to the DB and gets the data to the dropdownlist. This means that I can have three queries to the DB while rendering one page.
should I close and dispose the sqlconnection, sqlcommand and sqldatareader at the end of this function?
Would it be faster if I left it open for the next call, if you get what I mean, or is it best to close and dispose it every time?
At MVC 2 I do this: [URL]
But with MVC 3, I canīt create a child container per request(in really I can, using the old way), because container is hold at a static variable: DependencyResolver.SetResolver(new UnityDependencyResolver(container));
Which the better way to Dispose created objects? Since I use Repositories and Entity Framework (that need Dispose). As said here [URL] HttpRequestLifetimeManager donīt dispose objects....
I Want to know garbage collector works in .net there is something heap and stack funda.so can u please tell me from where i get reference of whole funda of that.and i have another question is that Please see below the code.here i declare one dt and get some data in it.and i don't want that dt after data come in text boxes.so in finally method i do dispose using dt.dispoe().but after that i write little code to check whether the dt correctly dispose or not.so i check with ifcondition after disposing.you can check code given below for that condition.as per condition it gives me "Nikunj" Ouput in message box it meanse dt is not disposed after calling the dispose method.so can u please tell me why?And i Want to know about all resources which i used i want to know how can i free it.whether it is variable,object,datatable,datareader etc..... if it is any where with example then please give me link.and if it's from msdn then it's better. i want to know from Microsoft that how Microsoft Suggest to do that.
Private Sub grd_expense_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles grd_expense.DoubleClick
Dim dt As DataTable
[code]...
In ASP.NET 4.0, I have an IHttpModule that apply a filter on HttpRequest.Filter. As the result, the content stream length is changed, and it breaks WCF with now returns 400 bad request because of the mismatch between the body length and the HTTP headers.
View 1 RepliesIs there any real purpose to calling Dispose() on a Linq to SQL query? I want my site to be scalable so I'd like to control the datacontext but if it's not necessary I don't see a point.
View 9 RepliesIf I explicitly put an oracle connection in a Using{} block I know that it will call the Dispose() method when it goes out of scope. My question is will the OracleConnection object be disposed in the following code block:
[Code]....
The OracleConnection is implicitly within the Using{} block for the OracleCommand and goes out of scope at the same time.
i am using MVC for my project in the logon authentication, when i login using correct values there is no problem.
If i login using false or empty values i get the DataContext accessed after Dispose error.
i get it in the first line itself 'using (HealthObjectDataContext dc = DataContextFactory.GetDataContext())'
this is the method i use in the security service.
[code]....
There's a problem, wherein a XML Document.Save is resulting in the error the process cannot access the file, because it is being used by another process or the statement an Invalid XML Document.I think it's because I do not dispose the XML Document object after it's operation is complete.Is it possible to do this.Is there a workaround?
View 2 RepliesWhen you create and use a Web Service proxy class in the ASP.Net framework, the class ultimately inherits from Component, which implements IDisposable. I have never seen one example online where people dispose of a web proxy class, but was wondering if it really needs to be done. When I call only one method, I normally wrap it in a using statement, but if I have a need to call it several times throughout the page, I might end up using the same instance, and just wondered what the ramifications are of not disposing it.
View 4 RepliesI have a member class that returned IQueryable from a data context
public static IQueryable<TB_Country> GetCountriesQ()
{
IQueryable<TB_Country> country;
Bn_Master_DataDataContext db = new Bn_Master_DataDataContext();
country = db.TB_Countries
.OrderBy(o => o.CountryName);
return country;
}
As you can see I don't delete the data context after usage. Because if I delete it, the code that call this method cannot use the IQueryable (perhaps because of deferred execution?). How to force immediate execution to this method? So I can dispose the data context..
I have an ASP.net page that is creating a service reference to a WCF service and making calls in multiple places in my page. I instantiate the service reference in Page_Load and have an instance variable to store it:
private FooClient _serviceClient;
protected void Page_Load(object sender, EventArgs e)
{[code]...
I just discovered that I need to be disposing of the service reference when I am done using it or else the connections will be kept alive and will block incoming connections if I reach the max number of connections. Where would the best place to dispose of these references be? I was thinking of doing it on the OnUnLoad event.
I've created a simple sample site to demonstrate the issue. In it, I have a Default.aspx Page that has a button on it:
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<p><asp:Button OnClick="ButtonClick" Text="Button" runat="server" />
</p>
<asp:Label ID="output" runat="server" />
</asp:Content>
The code behind just sets the label text on the button click:
protected void ButtonClick(object sender, EventArgs e)
{
output.Text = "Button Click!!";
}
I then have an IHttpModule that gets called for every request:
[code].....
And now it's broken again! So to make a long story short, just by accessing the Form collection on the request in the IHttpModule, I somehow screw up the PostBack, and the event never gets fired.
I have a class DocumentGenerator which wraps a MemoryStream. So I have implemented IDisposable on the class.
I can't see how/where I can possibly dispose it though.
This is my current code, which performs a file download in MVC:
using (DocumentGenerator dg = DocumentGenerator.OpenTemplate(path))
{
/* some document manipulation with the
DocumentGenerator goes here ...*/
return File(dg.GetDocumentStream(), "text/plain", filename);
}
This errors as the stream is closed/disposed before the controller has finished with it. How can I make sure my resources are properly disposed in this situation?
EDIT: My implementation of IDisposable at the moment just disposes the MemoryStream. I know it's not a proper implementation, I just used it as a test. Is there something different I could do here to make it work?
public void Dispose()
{
_ms.Dispose();
_ms = null;
}
what is the best to close or dispose all the ado.net object
eg:datareader.close(); or sqlcommand.Dispose();
if programs hangs in the middle(because of error), then how to close all the ado.net object so there will be no memory leak
I have created an asp .net ajax control, meaning i have a javascript object linked to this control. In that object as usual i have 2 crucial methods: initialize and dispose.
[Code]....
In internet explorer dispose method is invoked every time user leaves the page, even when closing the browser. But not in chrome, its invoked by refreshing the page but not by closing the tab or window. Do you know how to achieve this?
I use SmtpClient to send email. I want to ensure that the SMTP connection gets closed after each message is sent. I found an explanation of how to do this in the SmtpClient documentation on MSDN:
[URL]
One thing it says is: Call Dispose when you are finished using the SmtpClient. The Dispose method leaves the SmtpClient in an unusable state. After calling Dispose, you must release all references to the SmtpClient so the garbage collector can reclaim the memory that the
SmtpClient was occupying.
I have a question about the last part. What exactly does "release all references" mean. How do I do that?