I have an asp.net 3.5 C# web app.
When a person starts this app it will auto log them in by the System.Web.HttpContext.Current.User.Identity.
On the method Session_Start in the Global.asax file I am setting the User's cookie.
If the cookie expires I want to be able to re-start the Session or call Session_Start from the Global page.
I'm using BlogEngine and i'm changing it a little bit. I tried to show the online visitors number. I added some code in global.asax. My approach is like:
I defined the count of visitors in App start like Application["OnlineVisitors"] = 0
then i increased the count with 1 in the session start and decreased it in session end but it's not working. I downloaded the website to debug in my computer but i never comes to the breakpoint in the session start function. Also sessionstate mode is inprog cookieless= false and timeout = 20
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I want in Session_Start method check if cookie with specific key exists and if not create cookie with this key.
if (HttpContext.Current.Request.Cookies[key] == null)
{
SetCookie();
}
But in Session_Start it is always NULL. If check it in another place I get cookie's value.
Why is it always NULL in Session_Start?
I've exhausted my resources and still have been unable to determine why I'm experiencing this issue:
- I have an ASP/VB Website
- I've added a Global.asax file
- In the Global.asax file, I'm initializing some settings in the Session_Start method
If I use the Built-In VS web server, the Session_Start method is hit and the settings are initialized
If I use an IIS Virtual Directory for the website, the Session_Start method is NOT hit
I have a simple aspx Page, which html contains:
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and code behind:
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This is quite simple. When I press btn1, it sets correctly the Session Key. And this is then the issue arrives: When I press one of these buttons, this is the sequence of what happens:
Global.asax: Session_Start
MyPage.aspx: Page_Load » btnX_Click
So, everytime there is a PostBack, even before the Page loads, the session starts and generates a new Id. This way, I loose everything during the PostBack. My Session State configuration:
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This is running on VS 2010 + V3.5, on IIS5.1. The Page header configuration is default.
I have a asp.net page with a codebehind. I have 2 buttons on the page. When clicking on button 1 I get some data from my database and save it for later use in Sessions.
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i have one method which save datatable in viewstate.i am calling this method in. page_load2. Prerenderthe page was every heavy,i did tracing of page i found due to calling of method from preprnder it doubled the viewstate sizewhat was the reseon behind this.
View 2 RepliesHere is what im trying to do...
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And here is where i call the function
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Output is System.Collections.Generic.List`1[Model.Friend] i would like it to list everything thats in the list.
Using VWD 2008
Windows Vista client
Host on Win 2000 server.
Have a Order entry application where create a Cookie to store OrderID when 1st item is purchased. Then go through a series of 3 pages to accept shipping info, etc. When we get to the Payment Method page a button allow user to pay via PayPal. If clicked a call is made to Paypal to log user in. PayPal then redirect back to application page called "PayPalConfirm". When we get back to the confirm page the OrderID cookie is missing!
Here is how I create cookie and set expiration to 1 day: Response.Cookies("OrderID").value = "ABCD" Response.Cookies("OrderID").Expires = DateTime.Now.AddDays(1)
Again, the cookie exist through several pages but when return from PayPal it is gone.
I am creating a multithreading application and I am using countdownevent to signal my object arround 3 times and using wait , but somehow the session goes null , although I am setting a breakpoint after mycountdownevent.wait() and the breakpoint isnt reached , that means the execution is not done...so can someone tell me what is wrong?? here is my code :
this is the main thread
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this is the upload image method :
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and this is a property for the countdown event :
public
CountdownEvent
_3adasehCountDownEvent;
i have a question about call javascript in codebehind. my page has two parts.one part for enter information about manager and another part for usualuser.each person has mellicode.that it has speicail code.i wrote it with javascript and call it with this code:
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when i click in btnpazireshsabt i should check mellicode for manager.i call it :
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i want to disable btnsabt when i click in
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when we go for client and server side state management in asp.net
View 2 RepliesI am doing a POC of making my website run faster. Currently it stores huge object data in Session while passing information from one page to another. What I was thinking is to use shared methods and properties instead of session. It works, but wanted tocheck if this is an optimum way to do it. Below is the code that does not use session but still pass object data from one page to another:
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i have a form on page1.aspx with several controls (textbox, dropdownlist, etc).on Page1 PageLoad event i load data from database and performe databinding.From Page1 a user can, by clicking a specific button, move to Page2.aspx to insert some details and, after saving details, he returns to page1.
if save changes are made on control on page1 before save them to db, obviously, these are lost on return from page2 (because are reloaded on pageload from db).How can i save control status between pages round trip?
i need to know the full concepts state manegemnt in asp.net,..in which site i will get the correct concept for state management....
View 4 RepliesUser Interface: 2 Labels; 1 Buttons
Requirements: Create a Web Page in ASPx that will do the following:
1)One label will provide a count of how many times Button 1 has been clicked in the current session.
2)One label will provide a count of how many times Button 1 has been clicked by all users of the application. The Application Code for the Button should start at 100 (set this in the Global.asax file). this is what i have so far but i cant seem to get the application state to work properly.
aspx.vb
Partial Class _Default
Inherits System.Web.UI.Page
Dim clickcount As Integer
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Session("ClickCount") Is Nothing Then
clickcount = 0
Else
clickcount = CInt(Session("ClickCount"))
End If
If Not IsPostBack Then
If Request.Cookies("UserName") IsNot Nothing Then
Label1.Text = "Welcome Back " & Request.Cookies("UserName").Value & "."
End If
End If
Dim clickCounta As Integer = CInt(Application("ClickCount"))
End Sub
Protected Sub PostBackSession_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles PostBackSession.Click
clickcount += 1
lblClkCnt.Text = "Current Click Count is " & clickcount
Application.Lock()
Dim clickCounta As Integer = CInt(Application("ClickCount"))
clickCounta += 1
Application("ClickCount") = clickCounta
Application.UnLock()
AppClick.Text = clickCounta
Dim nameCookie As New HttpCookie("UserName", _
TextBox1.Text)
nameCookie.Expires = Now.AddYears(1)
Response.Cookies.Add(nameCookie)
End Sub
Protected Sub PostBackSession_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles PostBackSession.PreRender
Session("ClickCount") = clickcount
Application("ClickCount") = clickcount
End Sub
End Class
global.asax
<script runat="server">
Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
Dim clickCounta As Integer = CInt(Application("ClickCount"))
Application.Add("ClickCount", 0)
End Sub
Sub Application_End(ByVal sender As Object, ByVal e As EventArgs)
Dim clickCounta As Integer = CInt(HttpContext.Current.Application("ClickCount"))
End Sub
Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs)
' Code that runs when an unhandled error occurs
End Sub
Sub Session_Start(ByVal sender As Object, ByVal e As EventArgs)
End Sub
Sub Session_End(ByVal sender As Object, ByVal e As EventArgs)
End Sub
I have a JavaScript function which i call in the onchange handler of a dropdownlist. If the selected value of dropdownlist is "1" i want to call one function in codebehind.
Following is the function in JavaScript:
function GetAdmissionType()
{
InitComponents();
var type="";
type=document.getElementById(dlAdmissionType.id).value;
document.getElementById(hdnAdmissionType.id).value=document.getElementById(dlAdmissionType.id).value;
if(type=="1")
{
}
}
If type is 1 then i want to work following code in codebehind
public void LoadSemesters()
{
//code to load other dropdownlists
}
call function in codebehind from JavaScript?
I need to have something similar to onclick for a <asp:menuitem, is there an easy way to do this?
View 1 RepliesIs it possible to call ASP.NET codebehind function from Javascript.
View 5 RepliesIs it possible to call a C# function in my codebehind from javascript?
View 3 RepliesI have a controller:
<asp:Button OnClick="MyFunction" runat="server" />
I want to be able to call MyFunction without the page reloading. Is this possible with ajax or something?
If so how would I do it?
i want to call thickbox.js function in codebehind , below the code in jquery i want to call below code in codebehind
function tb_remove() {
parent.location.reload(1);
$("#TB_imageOff").unbind("click");
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I'm having some trouble with making use of some AJAX-properties that are normally accessable after I've initialized a scriptmanager.
ie. This work:
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Now, I would like to call the javascript-function 'testFunc()' from my ASP.NET Codebehind-file, and here's my problem. I keep getting "Sys is unidentified".codebehind-stuff: ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "testkey", "testFunc();", true);
Does anyone have good idea how to solve this?
Much appreciated. Thanks.
So I have a page that is rendering data from an MSSQL instance into an HTML table. The last cell has a button to download an uploaded file from the database which is created manually during the table creation so I can enter the recordid as a parameter of the button.
The upload and download functions work perfectly fine. The problem is that I cannot get my dynamically created button to work . All it does is post back but I never get the actual file to send from the server. (Although I verified it works through other means). Any suggestions would be great, I've litterally spent all day on this. below are a few code snippets of the different methods i've tried.
RenderControl. This is great but it loses the onclick method
c# Code:
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I have a aspx page that, when loading, will initialize a class called, Bill :)
When Bill is initialized, the aspx page will wire a function to a handler of Bills.
When that function in Bill is fired, I would like to call a javascript function in the aspx page, but that is where I am having difficulties...
I have tried ClientScript.Register and all of that, but nothing is seeming to work. As of now, I am simple trying to get the function to fire an alert.