I was trying to avoid ViewState in one of my forms, so I thought I could store the selected item as a session variable.
However, I realized that SelectedIndexChanged does not fire on a drop-down's autopostback unless I have ViewState enabled. Am I missing something here?
The sites I mantain are using way too much ViewState and I'd like to reduce that so the size of the page is reduced. I've done a lot to remedy this but I have an issue relating to DropDown lists that use AutoPostbacks.I have a dropdown list with a lot of list items and a good part of the ViewState usage is to hold the list item data. If I disable ViewState and set the AutoPostBack property to true, the page will post back and in the page load I am trying to repopulate the dropdown list with cached data. However, it seems that the SelectedIndexChanged event doesn't fire when EnableViewState="false".Is it possible to make this work without enabling ViewState for the drodown list?
View 6 RepliesI have this code (just for example):
[Code]....
The Code-behind file looks like that:
[Code]....
So, when i use
[Code]....
SelectedIndexChanged event doesn't fire for the first item of the DropDownList. For any other item SelectedIndexChanged fires, but not for the first one.Could someone, please, explain what kind of magic is it?(I use Visual Studio 2008)
As Iwas trying to install SQL Server 2008 I got the message that, SQL Server 2008 requires VS 2008 SP1. Am using Visual Studio 2008 what do i haveto do here. I cant be able to dowload due to my bandwidth problems.
View 3 RepliesJust knocked up a quick sub site and everything was working great until I put my code in the getquote button and now it shows the below error. Done a bit of searching but everything I find says I need to insert something like: Protected WithEvents {buttonname} As LinkButton
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request.
Compiler Error Message: BC30506: Handles clause requires a WithEvents variable defined in the containing type or one of its base types.
Source Error:
Line 39:
Line 40:
Line 41: Protected Sub btnGetQuote_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnGetQuote.Click
Line 42:
Line 43: Dim Total As Double = 0
I have Download "VWD_RV_Addon_enu" which is reportviewer setup when I double click it displays Below information
This add-on requires Microsoft Visual Web Developer 2008 Express Edition Service Pack 1. Upgrade to Service Pack 1 and try again.
where can I get Service Pack 1.?
The entire message is Viewstate verification failed. Reason: Viewstate was invalid.
This is getting logged to the eventlog on our "dev" server. It suddenly started to happen. I have been programming locally and I am often (daily, hourly) moving new dll's and pages to the dev server so our BA can test. When my application gets an exception it puts up an error page and there's usually an event logged with "Error" severity - like if an index goes beyond array bounds, etc. The BA is getting the error page, but the message at the time is "Warning" severity and it's this viewstate thing. But the log is indicating it happened in my page. So I don't understand what I could've done to cause it.
I have a web site with some aspx pages. There are occasions when a button on a page is clicked and instead of executing the code written on button click, the page simply reloads and losses values that was entered in various controls on the page.
This does not happen everytime, but randomly. This erratic behaviour is not restricted to any one page , but happens throughout the site. What could be the reason ?
I need to store viewstate in session to optimize my page performance on postback.
I am developing ASP.Net Website, using Visual Studio 2008.
I created a class named "BasePage" under "App_Code".
[Code]....
Now, I know if I inherit this class in all of my pages, that will work but I am looking to do this through Config file.
Is there any way that I can write something in Config file to use this class for all the pages?
so that if I want to remove, I can simply remove from config file and I do not need to compile my whole project again.
Now here is the weird thing. First i am running it locally on the built in vs2008 web server.I load my control in fine, do a postback from a linkbutton, locally on my machine it all works fine, no issue.However when it goes onto my host, it falls over with the message:
Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request.Now i also load controls dynamically and use postbacks and things in the admin area of the site...and that works fine, however my front end just keeps failing? See the code behing below:
[Code]....
I have problem getting values from viewstate in GetTopThemes.
<asp:ObjectDataSource
ID="sourceGetTopThemes"
runat="server"
TypeName="DBConnection"
SelectMethod="GetTopThemes"
EnableViewState="true"></asp:ObjectDataSource>
[Code]....
}
[Code]....
when the page is not Posted back, I saved all values in the viewstate.
I have been getting this error a lot lately with some of my users, and I had a couple of concerns with view state and I have read so many articles but I am still lost..
1. I use masterpage on all the pages and I need viewstate for some of the pages but..
There is a page where a user will fill out the information and then submit this data to a cgi server, and it is where I get most of the Client Disconnected errors, what would happen if I disable viewstate when they click on that button?
Now when a user browses from one page to another, does the view state from the previous page get deleted? If not how would I delete it?
Does the master page have its own viewstate? Would I be able to make sure none of items on my master page are using the viewstate?
I have a shopping cart page (Cart.aspx) that has a button that will (sometimes) post to a third party payment gateway, if payment is necessary. The payment gateway will process the payment and then do a silent post to my website (Order.aspx) so I can update the order status.
Order.aspx always throws an invalid viewstate error, even though viewstate is disabled on the page.
What's happening is that Cart.aspx (which has viewstate enabled) posts to the payment gateway, and the gateway will post it back as part of the silent post. Even though Order.aspx has viewstate disabled and validation disabled, it still tries to validate the __viewstate field it's being given.
I know setting EnableViewState=false will disable the rendering of the __viewstate field, but if another page provides the field, shouldn't it still skip validation? I tried calling ViewState.Clear() on the Page_Init event of Order.aspx, but ViewState is apparently empty. how to get around this? I don't want to disable ViewState on Cart.aspx (in some cases it may be necessary), but I can't figure out how to clear it on Order.aspx.
I am using 'TextBoxWatermarkExtender'.code compiles fine but when i run the application, i get the following js error :
"AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts. Ensure the correct version of the scripts are referenced. If you are using an ASP.NET ScriptManager, switch to the ToolkitScriptManager in AjaxControlToolkit.dll."
I have installed all necessary things, am i missing something.
I have an application, which requires a user login.The customer I have does not want the session to time out.I have set the webconfig timeout to 160000 to prevent this but I still get an error when the time passes 20 minutes because I use session objects.Can I automatically refresh the browser every 10 minutes if it is not used, so the user can always use the application again after e.g. 3 hours?
View 6 RepliesI have created a simple ASP.Net page to create self printable tickets so non-technical people can change the text and layout of a ticket. Obviously the user has to be logged in to be able to print their tickets.
When providing the URL for wkhtmltopdf to convert, the tickets are not created because wkhtmltopdf does not have a session to prove the user is logged in.
Is it possible to pass the session to wkhtmltopdf in the URL, or is their a better solution?
I have the following code which seems to work OK except for a minor problem.When the user first visits the page the correct phone number appears but on the second visit - if they should see a different number, they need to load the page twice before the number changes to the new one.'m not too sure how to explain this best so if you need more info please do ask.
Public freeCallNumber As String
Private Function getFreeCallNumber(ByVal value As String) As String
Select Case value
Case "EZ12"
Return "0800 11 22 333"
[code]...
I implemented a simple autocomplete method using AJAX Autocomplete Extender through this video:http://www.asp.net/ajax/videos/how-do-i-use-the-aspnet-ajax-autocomplete-controlI am pulling from the web service for my data. Nothing major...But when I am running the application .NET is throwing me this error: Microsoft JScript runtime error: AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts. Ensure the correct version of the scripts are referenced. If you are using an ASP.NET ScriptManager, switch to the ToolkitScriptManager in AjaxControlToolkit.dll.This is my code for the textbox that implements extender:
<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="~/WebService1.asmx" />
</Services>
[code]...
I've been dealing remotely with a weird situation with a Windows Server 2003 virtual machine that's running a ASP.NET 3.5 website... Or, at least is trying to run it.
The website was installed using the standard installer for the project, which has been used to install at several different locations. However, this one is behaving differently.
The website fails when it runs. In the Event Viewer, the following error is reported:
Exception information: Exception type: HttpException Exception message: The specified module could not be found. (Exception from HRESULT: 0x8007007E)
The error is reported on the website as:
Exception Details: System.IO.FileNotFoundException: The specified module could not be found.(Exception from HRESULT: 0x8007007E)
Running the fusion log viewer, I can see that ASP.NET is attempting to load the following assemblies:
CppCodeProvider, Version=8.0.0.0,
Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a
VJSharpCodeProvider, Version=2.0.0.0,
Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a
First off, there is no reason why ASP.NET should be loading these assemblies. I can't find anywhere in machine.config or any other config where these assemblies are listed as required. We tried installing the 3.5 SDK, but neither was installed. I've only got version 10 of the CPPCodeProvider on my development machine.
What the heck is going on here??
NB: don't do a cursory google search and answer. Nothing I found applies. And if anybody answers
"Define DEBUG constant" and "Define TRACE constant"
I am building a page which has to search an access table with the text input entered by the user. The thing that is puzzling to me is that the functionality works only when a '%' is explicitly added to the text input at the begginning and end.
If I add '%' programattically in the code behind file, it does not work.
code snippet ( asp page):
<asp:AccessDataSource ID="AccessDataSourcex" runat="server"
DataFile="~/App_Data/company.mdb"
SelectCommand="SELECT [ID], [emp name] AS emp_name, [emp title] AS emp_title FROM [EmpMain] WHERE ([emp name] like [code]...
//the below line is of no use, the % char has to be in the text input
//txtSearch.Text = "%" + txtSearch.Text + "%";
GridView1.DataBind(); <---- this works fine
<--- this does not work, even if I add % chars programatically..
My question is: why does it not work when I programattically add the '%' chars to the search string..
trying to get the latest version of ACT I have (3.0.31106) working with a VS 2010 website, targetting .Net 4.0.
I have researched this and can't find a definitive answer.
I was using the AutoComplete Extender with no problems in VS2008 (ACT version 3.0.30512.1).
In creating this new VS2010 website I thought I ought to also check and get the latest version of the ACT.
Now, when running the new website I get the error other people get,
AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts. Ensure the correct version of the scripts are referenced. If you are using an ASP.NET ScriptManager, switch to the AjaxScriptManager in System.Web.Ajax.dll, or use the ToolkitScriptManager in AjaxControlToolkit.dll.
What is the best approach here? I don't see the point ofusing the ToolkitScriptManager when the website already has the regular v4.0 ScriptManager.
I seem to have resolved this - fingers crossed - by downloading source version 49157 and then opening the .Net4 soultion file and building in VS2010. Then I got the AjaxControlToolkit.dll file from this project for use in my new website. This works fine now (for the autocomplete extender, at least).
So, I have web apps with web.configs like so:
<authorization>
<deny users="?"/>
</authorization>
<location path="SomeUnsecuredPage.aspx">
<system.web>
<authorization>
<allow users="*"/>
</authorization>
</system.web>
</location>
In other words, most pages require authentication and authorization, but some don't.
Then I have an IHttpModule that will be used by all the different applications. All I want to do is check if the current request is "secured" at all. If the page doesn't require authorization I don't want my IHttpModule to do anything at all. I am using FormsAuthentication and I assume that FormsAuthentication already has all of this information cached somewhere, doesn't it? Also, since this check will be running constantly so it has to be very quick.
I am currently subscribing to the HttpApplication.AuthorizeRequest, but surprisingly this event fires even for resources that allow anonymous access.
ExecuteScalar requires an open and available Connection. The connection's current state is closed.
namespace ITS_Group{ public partial class Login : System.Web.UI.Page {
private DataTable GetData(SqlCommand cmd) {
DataTable dt = new DataTable();
String strConnString = System.Configuration.ConfigurationManager.ConnectionStrings[1].ConnectionString;
SqlConnection con = new SqlConnection(strConnString);
[CODE]..
I have implimented Forms Authentication on my web project.
I need to set some of the form pages so that the user cannot open them without being logged in to the web site. How do I code the additional pages so that it requires them to login?
I am using the following code for URL RewritePath
[code]....
but its giving the following error
CurrentNotification = 'System.Web.HttpContext.Current.CurrentNotification' threw an exception of type 'System.PlatformNotSupportedException'
base {System.NotSupportedException} = {"This operation requires IIS integrated pipeline mode."}
}
}