I'm currently working with a part of my application that uses Dynamic Web User Controls and I'm having a bit of trouble figuring out the best way to re-instantiate the controls on postback by using ViewState or some other method that doesn't require me to query a database on each postback. Basically what I have on my page is a user cont...
Hy, I'm interested in some general optimisation methods in an asp.net ajax project for Viewstate (ex. to reduce the size of viewstate , or just speeding up the viewstate somehow, or others this should be a general discussion :-) ). So what kind of optimisation do you use for ViewState? What possibilities are offered on Asp.net or Ajax...
I'm sorry for maybe making such a basic question but in ASP.NET websites what does the __VIEWSTATE input field represent? Also, is there any way to compute it's value (based on the values of other form fields)? EDIT I understand that __VIEWSTATE, as the name suggests, maintains the values of form field values in webpages however what ...
this is the simple code: protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { txt.Text = "Original"; } } first load. text box state is "Original". manually , changing the value to "Not Original". pressing F5. the line: txt.Text = "Original"; is executed but the Input value remain "Not Origi...
How to store the state of my check box list tick boxes accross the page life cycle? Here i have a unbound checkbox list control where values comes from xml file. how to retain the state? Moreover, when i click on Next button to the new page and comeback state is retained. But when i click on the back button and come to the same page ...
I'm working on a web form which works fine as long as it posts back to itself. In Reports.aspx I have: <form runat="server" method="post"> but, when I try to get it to post to a different page: <form runat="server" method="post" action="DisplayReport.aspx"> I get the "Validation of viewstate MAX failed" error. I've tried setting th...
I'm building an "Advanced Search" interface in an ASP.NET application. I don't need SO to write this thing for me, but I'm stuck on a specific problem regarding dynamic controls and ViewState. I would like some direction for how to approach this. Here's my situation: Ingredients: A serviceable set of API objects representing ent...
I've checked every post on SO, every post on the internet, but nothing is helping. I'm getting the Validation of viewstate MAC failed error. It just started failing on our production server all of a sudden. However it works on our staging server, and the files are identical. We discovered that our production server has SP2, while the ...
I am currently working on a localization project for an ASP .NET application. I currently have a massive page with a multi view with about 9 tabs with each tab containing lots of data. I was just wondering, I put a lot of tag on my ASPX page so that I could localize my text easily. I was wondering if the amount of Label has a big impact...
I have the following in my BasePage class which all my ASPX pages derive from: protected override void OnInit(EventArgs e) { base.OnInit(e); ViewStateUserKey = Session.SessionID; } I also have a machineKey set in Web.config. I don't think this error is because of a web farm because this happens on my dev machine too. My host ...
I have an ASP.net web app and on my test (database) server I have enabled sqlserver to store the viewstate and when I run the app from visual studio this works fine. However when I try to host the app on the production machine (IIS 6) the viewstate is still present in each page request. If I use the exact same connection settings again...
Hi everyone!. Is it better for performance to set EnableViewState to false for all pages and just except some controls that i want to enable their ViewState ?. And how could i do this in web.config file ?. ...
Ok So i have written methods to override the LoadPageStateFromPersistenceMedium and SavePageStateToPersistenceMedium methods. now the problem is that i am using a masterpage, so how do i maintain using my masterpage and still inherit from System.Web.UI.Page? Please bear in mind that the .vb Code behind the masterpage already inherits Sy...
I have looked at similar questions on Stack Overflow but haven't been able to find the solution to this particular problem. I have a simple (not really, but let's pretend) ASP.NET page with an update panel inside it. In this update panel there is a HiddenField control with a value that will be set/updated via my own custom JavaScript. T...
Hi! Im trying to setup a login functionallity in C#, where I have a form on default.aspx that posts to Login.aspx where the logic is runned. But when the form posts to Login.aspx I get a MAC viewstate verification error. What is this and why? When I call Login.aspx direct from the browser I get no error, only when the form posts itse...
Visual Studio 2008 .NET 3.5 I'm using the built in web server to test, and everything works fine. My TinyMCE code is the following: <!-- TinyMCE --> <script type="text/javascript" src="/tiny_mce/tiny_mce.js"></script> <script type="text/javascript"> tinyMCE.init({ // General options mode: "textareas", theme:...
I've got a WebControl that I want to dynamically add a HiddenField from. I've tried the following example: Click here, but that doesn't work due to the fact this.Page.Form is null in the Page Init event. I've tried the following, but the value is never maintained: HiddenField hd_IsDirty = new HiddenField(); protected override void O...
Now I've seen some questions like this, but it's not exactly what I want to ask, so for all those screaming duplicate, I apologize :). I've barely touched ASP.NET MVC but from what I understand there is no ViewState/ControlState... fine. So my question is what is the alternative to retaining a control's state? Do we go back to old schoo...
I have a textbox and button on my .aspx page. The EnableViewState property of the textbox is set to false. But when I enter some text in the textbox and click the button the entered text is still present in the textbox. I expect the textbox to be blank since EnableViewState is set to false. Am I missing something? ...
I'm am looking at the code in this article on Web methods and I've tried to implement it. The article works as designed but when I swap the HTML button for an asp:button I get different results. CODE behind: [WebMethod] public static string GetCurrentDate() { return DateTime.Now.ToString(); } Aspx pa...