State Management :: Request.Form.Keys And Values Exactly?
Feb 11, 2011
These are not a kind of Sesison Or QueryString so what are them for ? I can get key names and values via Request.Form.Keys and Request.Form[i] but is it another kind of passing values something like session or querystring (post and get) so what is Keys ? Post or Get values? or another type of variable handling? can some friend explain this is useful for what ? what is the obvious difference Keys against QueryString and Session ? are they cookies or what ?
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Jun 20, 2010
I'm using HttpModule to capture requests to the web server. Before processing the page I'd like to check the values contained in some keys of the Request.Form collection and according to some logic change if necessary. I'd like to do this when BeginRequest event is fired. The problem is that the Request.Form collection is readonly.
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Nov 5, 2010
Customer were getting "View State Validation Error" due to worker process recycling at our production webserver and to fix that i applied machinekey and then move my Session state Mode from In Proc to State Server to retain session data and not kick out the customer to relogin. I had serialization issue with one object which has to be stored in session but when i moved it out of session i could able to resolve the issue.
But doing all these i was partly successfull in keeping the user in their session when Worker Process recycle event occurs.I was able to refresh the page or make a post back by clicking the refresh button and also able to retain the session values. But the Problem occurs when sending asynchronous request to server which we do periodically every 15 minutes from the moment the user logs in.The web page doesnot update data on website when sending asynchronous request.By Debugging I found at this particular code point it fails to make a postback which is required.
<%=GetHintFromServer%> (When there is no Worker Process recycle i t gets replaced by
WebForm_DoCallback('__Page',message,ShowHint,null,null,false) on postback) Everything works fine when there is no Worker Process Recyling but when it happens looks like sending request asynchronously using javascript fails .Remember When I make a post back by manually clicking submit button everything works fine.
SendRequest(Asynchronous)
function SendRequest(msg, isBusy, chartMsg, vesselMsg)
{
try
{
//confirm("msg"+msg+"isBusy"+isBusy+"chartMsg"+chartMsg+"VesselMsg"+vesselMsg);
_busy = isBusy;
if(chartMsg != null)
{
//confirm("chartMsg"+chartMsg);
_element.SetMessage(true, chartMsg);
}
if(vesselMsg != null)
{
confirm("chartMsg"+vesselMsg);
_element.ShowVesselLoading(true, vesselMsg);
}
_stuckWatchdog = setTimeout( "ClearPendingRequest();", 60000);
var message = msg;
var context = '';
<%=GetHintFromServer%>
}
catch(e)
{
alert( "Exception error on SendRequest(): " + e);
}
}
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Apr 21, 2010
Our Web Server rebooted due to power failure. Now ASP.Net State service would not start logging the following error on the server:
Unable to make the Session State Request to the session state server. Last known phase=Sending request to the state server
how to bring back the ASP.Net State service.
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Jul 8, 2010
I have ASP page that host an ASP.NET page in iframe. When I test this in FireFox all work ok but when I use IE the ASP.NET page is creating a new sessionID for each request. it only work if I change the IE Privacy settings allow session cookies .
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Apr 29, 2010
I have a clear button and a textbox in an aspx page. I set the session variable in this page as
String str = Textbox1.Text;
Session["TypeIds"] = str;
and I clear the sessions in a clear button event as
Session["TypeIds"]=null;.
Then when the user types some value in the textbox ,on Response.Redirect on another aspx page, the session variable returns null values.It does not retain its session state. The session state has to be maintained in the next page. Is it because this clear button event and setting explicitly to null creates this problem?
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Mar 8, 2010
My app has broken after upgrading to ASP.NET 2.0. The problem is that Request.QueryString is empty when the SelectedIndexChanged event of a IE Web Controls tab strip is fired. It worked perfectly in ASP.NET 1. I have the tab strip contained within my own UserControl.
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Nov 19, 2010
How do I create random value cookie for each Page Request in ASP.Net CS file.
Random value cookie should have server path.
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Sep 3, 2010
I'd like to be able to reference the asp.net objects Session, Request, from a procedure without passing them in as parameters all the time. Is there a way to do this. For example, now I have
[Code]....
I'd like to call it like this "ContextPT.GetSession()" and have GetSession know how to find the Session object. I know this does not seem like a big deal in this case, but I have reasons.
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Jan 6, 2011
I have a .NET 3.5 web application that uses SQL Server for its session state store. To improve scalability I wrote a class that implements IPartitionResolver that figures out which instance of SQL Server to use for a users session. All of this works great
and just as expected.
However, when I was debugging one day I set a breakpoint at the bottom of the ResolvePartition method to make sure the correct connection string was being returned. To my surprise this breakpoint was hit many (~5-10) times per request! The same is true about breakpoints in the IPartitionResolver.Initialize method.
Does anyone know why this is? It seems to me that you would only need to call these methods once per request. It's not like the users session is going to move to a different instance of SQL Server mid request.
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Dec 25, 2010
how to set the cookie expiry time towards 20mins from the last request.
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Jun 3, 2010
I have noticed that when I have a session that has expired, the Session_OnStart event fires with every new request.
I suppose that this behavior is not normal, because I was expecting that the session would re-start only with the first request and not with every subsequent request.
This behavior occurs only with sessions where the timeout period has been exceded.
The current conditions under which I have experienced this problem are:
I have experienced this problem with an application that is using the .NET 2.0 framework and with a session mode configured to InProc. This problem is happening both on Windows XP SP3 and Windows 2003 Server.
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Nov 1, 2010
I have checkboxes that I have created using Literal now on postback I get the checkboxes which are checked in the Request.form.Allkeys. However I don't know how to read those values how can I use them? how can I count how many values are in there and how can I find some values in there example I want to find if the request.forum.allkey contain forumaName0 ..
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Aug 19, 2010
I have QuoteNumber filed in Db.aspx(ddquote.txt) i want to pass this QuoteNumber values(values should to another web form/page i.e. mail.aspx when i click mail button, Message should supposed to display in textbox(txtQuote.txt) of mail.aspx form/page is "You are sending "QuoteNumber" quotation to "MailID",
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Sep 5, 2010
i make a web site using frame but session is expire message is
Object reference not set to an instance of an object
Description: HTTP 500. Error processing request.
Stack Trace:
System.NullReferenceException: Object reference not set to an instance of an object at System.Web.UI.Control.OnLoad (System.EventArgs e) [0x00000] in <filename unknown>:0 at System.Web.UI.Control.LoadRecursive () [0x00000] in <filename unknown>:0 at System.Web.UI.Page.ProcessLoad () [0x00000] in <filename unknown>:0 at System.Web.UI.Page.ProcessPostData () [0x00000] in <filename unknown>:0 at System.Web.UI.Page.InternalProcessRequest () [0x00000] in <filename unknown>:0 at System.Web.UI.Page.ProcessRequest (System.Web.HttpContext context) [0x00000] in <filename unknown>:0 My Web Config file is<configuration> <!-- store the database connection info here --> <appSettings> <add key="sBook_StoreDBConnectionString" value="Provider=Microsoft.Jet.OLEDB.4.0;User ID=Admin;Data Source=C:Program FilesCodeChargeExamplesBookStoreBookStore_MSAccess.mdb;Persist Security Info=False" /> </appSettings> <system.web> <httpRuntime executionTimeout="1000" maxRequestLength="2000000" /> <!-- DYNAMIC DEBUG COMPILATION Set compilation debug="true" to enable ASPX debugging. Otherwise, setting this value to false will improve runtime performance of this application. Set compilation debug="true" to insert debugging symbols (.pdb information) into the compiled page. Because this creates a larger file that executes more slowly, you should set this value to true only when debugging and to false at all other times. For more information, refer to the documentation about debugging ASP.NET files. --> <compilation defaultLanguage="c#" debug="true" /> <!-- CUSTOM ERROR MESSAGES Set mode="on" or "remoteonly" to enable custom error messages, "off" to disable. Add <error> tags for each of the errors you want to handle. --> <customErrors mode="Off"/> <!--<customErrors mode="On" defaultRedirect="Login.aspx"> <error statusCode="500" redirect="Login.aspx"/> <error statusCode="404" redirect="Login.aspx"/> <error statusCode="403" redirect="Login.aspx"/></customErrors> --> <!-- AUTHENTICATION This section sets the authentication policies of the application. Possible modes are "Windows", "Forms", "Passport" and "None" --> <authentication mode="None" /> <!-- APPLICATION-LEVEL TRACE LOGGING Application-level tracing enables trace log output for every page within an application. Set trace enabled="true" to enable application trace logging. If pageOutput="true", the trace information will be displayed at the bottom of each page. Otherwise, you can view the application trace log by browsing the "trace.axd" page from your web application root. --> <trace enabled="false" requestLimit="10" pageOutput="false" traceMode="SortByTime" localOnly="true" /> <!-- SESSION STATE SETTINGS By default ASP .NET uses cookies to identify which requests belong to a particular session. If cookies are not available, a session can be tracked by adding a session identifier to the URL. To disable cookies, set sessionState cookieless="true". --> <sessionState mode="InProc" stateConnectionString="tcpip=localhost:42424" cookieless="false" timeout="60" /> <!-- GLOBALIZATION This section sets the globalization settings of the application. --> <globalization requestEncoding="utf-8" responseEncoding="utf-8" /> </system.web> <connectionStrings> <add name="mydb" connectionString="Server=localhost;User=SYSDBA;Password=datacenter;Database=/opt/db/erp2.fdb;Min Pool Size=5;Max Pool Size=60;Connect Timeout=30" providerName="FirebirdSql.Web.Providers" /> <add name="mydb2" connectionString="Server=localhost;User=blackberry;Password=acgmkRMS;Database=/opt/db/pwd.fdb;Min Pool Size=5;Max Pool Size=60;Connect Timeout=30" providerName="FirebirdSql.Web.Providers" /> </connectionStrings></configuration>
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Jul 10, 2010
I have a form on which there is a repeater control for showing records in a grid-like format. On the same page, if we click on edit row link, the details for that row come into view. After editing, we click the save button to save the data and return back to the grid [Note that all these controls are on the same page]
This process is followed for say 3 records.
After this, I would want to view only those rows for which the values have been changed (alongwith the old and the new values)
How can this be achieved? Can Datatable.getchanges() help in such a case? If yes, how? Or are there any other options that I could go for?
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Oct 8, 2010
I have to split a long form into two pages. In the first page, I have a button "Next Page" to second page and in second page, a button "Previous page" to go to first page. How do I keep the form data when click "next page" and "previous page"?
I am using session variables to pass the form data. I have the server control Enableviewstat as true, but it still doesn't work. What else should I do? My code as below:
[Code]....
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Aug 5, 2010
I have an ajax form that has a simple click event. Inside the click event, at the end of the method, I have a Response.Redirect back to the same page. For the purpose of this thread, I will leave out the reasoning of this (it is just something that I had to do). Once the ajax call is complete and the redirect takes place, all of my default control viewstates get wiped out. The thing that doesn't make sense, is that if I define my own ViewState right before the Response.Redirect, these ViewStates also get wipedout. So, my question is, do ViewStates only hold their values after one postback/refresh? And, is there a way to use ViewState with the method described above? I am being forced to use the querystring to pass parameters.
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May 31, 2010
i need to pass the roll no from one page to another and have written the code but the code is not working
in the first page
Response.Redirect("userview.aspx?RollNo=" & TextBox1.Text)
then in the target page
dim rollno1 as string
Public Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
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Jul 28, 2010
i have a requirement where i need to pass values from page1 to page3. In page1 i have 3 textbox and 2 drobdownlist and one button named NEXT. In page2 i have 10 textboxs and button named Next button. In page3 i have 10 textboxs and Submit button. when Next button in page1 is clicked it goes to page2 and then to page3. In page3 i need to submit all the values of page1 and page2 to database. Is there any way to pass all the values of page1 and page2 to page3 without using sessions
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Aug 18, 2010
I am learning how to use profiles. My profile properties are defined in web.config and wish to add selected checkboxlist values to user profiles.TextBoxes and RadioButtonLists all seem to work fine, but not my CheckBoxList values.How do I go about making this work?
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Apr 1, 2010
I have developed an ASP.net project with VB.net and SQL Server 2008.
I have used session variable to store the user id while user login to the system.
The declaration is as follows:
Session("user_id") =txt_user.text
On the first page after login I have displaying the name using this Session value. And the menu also displaying according to the session value.
The code I am retreiving the value is,
dim user_name as string
user_name=Session("user_id")
On my development system everything working fine.
But when I implement the system to live server, the session value is not getting even for the first time.
I don't think this is problem with the code. This is some thing esle..
The implemented computer have Windows XP professional operating system and SQL Server 2008 Express edition datbase.
I have installed framework v2.0 and theIIS version is 5.1
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Mar 22, 2011
In my webapp page i load a custom user control, this uc loads data from an xml file in a JSGrid. All this works fine and uses callbacks. The uc is the callbackhandler and thus implements the icallbackhandler interface. Now, i gave this uc some properties, like the path to the xml file. After each callback the uc loses the values of its properties. Currently i'm including the path in each callback itself so i can load the file each time i need it, but this isn't the good way i think.
I tried solving this with viewstate but it doesn't work, a callback also seems to erase the values of the viewstate.
Is there a way to keep these values stored in the uc instance? Maybe a way to disable the erasing for each callback?
Also each callback contains "Changes", this has al the changes that were made to the grid. So when all the changes were made in the grid, i want to get these changes in my page that contains the uc in order to decide ther what to do with this data.
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Jan 6, 2011
In a aspx page I am displaying records in the datagrid control. I have added one more column to the datagrid in my aspx page and this column is the template column which contains the checkbox control for each of the records. Then I have two buttons a) Display and b) submit
When i click Display button I get all the records in the datagrid from the database(about 700 rows). Then when I click the checkbox for a few rows and click the Submit button then it redirects to another aspx page (i have given response.redirect) . But sometimes when i click a few rows and then click the submit button the screen goes completely blank and it even does not redirect to the next page as specified(in the browser URL the initial page name is only shown).
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Aug 20, 2010
how to pass the value from one page to another page in asp.net with out Using State Management Concepts?
Like 1. cookies 2.Sessiion 3. QueryStrings.With out using the above should pass the values..
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