The Text value of neither TextBox ever made it into ViewState at any stage. Here Mudassar Ahmed Khan has explained with an example, how to use ViewState variable inside JavaScript in ASP.Net with C# and VB.Net. Here’s what you get. This makes sence when you think about it. ViewState["Name"] = "This is ViewState value"; Page.ClientScript.RegisterHiddenField("hf1", ViewState["Name"]); Javascript: If i use html control will this problem be solved? and then assign a value to the literal in codebehind like this literal1.Text = string.Format(literal1.Text, "somevalue"); // somevlue can be your ViewState value then access it in javascript as usual So follow the following simple two javascript functions in two versions.. you’ve choice here to pick up any one that is pure JavaScript and jQuery. When you manipulate the listbox contents using Javascript, ASP.NET won't know what happen in the client. If so then why should i use an asp control. On your Page_Load code, put the code to read the HIDDEN input, separate the values, and fill in the listboxes. One way to do this is to create a hidden field in the page. Taking Values from ViewState to object. private Queue sTemp; private Queue p_tempQue. First a look at the code that was posted by the questioner: On first load, the page looks like this: Clicking the "Javascript Change" button calls the client-side btchange() function which results in the text within the label and the first textbox being changed to give this: Clicking "Button" causes a PostBack, and fires the server-side Button1_Click() event, which results in this: The value of the first TextBox which was changed using Javascript was retained, but the value of the first Label, which was changed by the same Javascript routine, was not retained. The answer is "No", but to explain this behaviour, a quick overview of ViewState is required, with links to more detailed explanations. Sorry if i'm unclear was a while since i worked with Viewstate and ASP.Net Forms. In your javascript, after you set the value of the label: if (cust1.innerHTML == '') { cust1.innerHTML = desc; icust1.style.visibility = 'visible'; } also set the value of the hidden field: document.getElementById("hidCust1").value = cust1.innerText Then, in your code behind, simple request the value of the hidden field: Syntax: Return the value property: textObject.value There is a common misconception that form values are managed by ViewState. hi guys,     i have a page load where all user from a table are filled in a listbox. “javascript change src value” Code Answer . Changing the viewstate won't do, because ASP.NET is actually using viewstate to restore the listbox condition. it is the other way around... you must have RUNAT=SERVER to have access to a control's content. Explain how to access Viewstate values of this page in the next page?-PreviousPage property is set to the page property of the nest page to get the value of viewstate for the page in the next page. JavaScript HTMLElement.style - To change style of HTML Element programmatically, assign custom style value HTMLElement.style. public virtual bool EnableViewState { get; set; } C#. btnHTMLAdd.Attributes.Add("onclick", "BLOCKED SCRIPTAdd_Remove_Item(ProdCodeSelList,ProdCodeSelectedList,false,txtRecord);"); btnHTMLRemove.Attributes.Add("onclick", "BLOCKED SCRIPTAdd_Remove_Item(ProdCodeSelectedList,ProdCodeSelList,true,txtRecord);"); string[] strSelected = txtRecord.Value.Split('#') ; //remove back all products to the unselected list. Thus the ViewState variable is accessed inside JavaScript code with the help … The default value of the ViewStateMode property for a Web server control in a page is Inherit. The Queue is only saving with a count of 1 (the first item that is added to it) no matter how many items i add. Looking at ViewState now will show no changes from the initial Page_Load. Learn how to change an HTML element attribute value with JavaScript. It is a Page-Level State Management technique. The value property sets or returns the value of the value attribute of a text field. objAddTo.options[iCurrentIndex] = new Option(); objAddTo.options[iCurrentIndex].text = objRemoveFrom.options[i].text; objAddTo.options[iCurrentIndex].value = objRemoveFrom.options[i].value; objAddTo.options[iCurrentIndex].selected = objRemoveFrom.options[i].selected; strData += (objRemoveFrom.options[i].value+"#"); strData += (objAddTo.options[i].value+"#"); //ProdCodeSelList and ProdCodeSelectedList are listboxes. Here's my code: javascript code: function Let’s say you have an anchor element on a website, with a faulty URL link path in the href attribute value. The httpcontext.current.session object (to hold a value or a bolded, italicized column). Manually assigning the value in Page_Load doesn't change this behavior. This code sends back a -1 if there is no record selected, but you could return another appropriate value: View State is the method to preserve the Value of the Page and Controls between round trips. TAGs: ASP.Net, JavaScript, Arrays, Form now when he says submit i want these list (in both the list box) to be accessible in the code behind. Whenever there's a change in the client side, the ViewState will report back (read: PostBack) the changes to the server so that the server can re-process the page. The viewstate is created on the server not the client so this should have no bearing. Wht adv does asn asp control give me over html controls? A collection of articles and tutorials on web development with ASP.NET by Mike Brind, "-//W3C//DTD XHTML 1.0 Transitional//EN" " Example : document.getElementById('idv').style = 'color:#f00;'. It would be relatively simple to extend the client-side btchange() function to read and write changes to the hidden field, and copy changes to the Label. Now you see that Button1 is added to ViewState on first load also. In the "olden" days, we used to have to manually wire up every form field to display the originally posted value, so that user's weren't presented with an empty form to fill in all over again, if it had failed server-side validation. Page employee = this.PreviousPage;-Then a control can be found from the previous page and its state can be read. Frankly speaking, I don't know exactly why we can reference the contents of a TextBox which contents has been changed in the client side (using client-side script or by user input), but we cannot do the same thing to ListBox control. That is because the viewstate is now stored in the session state. Never have been. Learn how to change an HTML element attribute value with JavaScript. I have a workaround to this, but not so elegant. In my previous tutorials, I’d explained about how to get and set asp.net textbox value using jquery, how to split string date into day month and year from code-behind, validate checkboxlist using jquery, validate radiobuttonlist using javascript and other more cracking tutorials on Asp.net, JavaScript, jQuery and GridView here. //objRemoveFrom is a ListBox, objAddTo is another ListBox, //recordRemove is a boolean flag to pick which ListBox I must record, objRecordTo is the Hidden input, for(var i = 0; i < objRemoveFrom.length; i ++). 3. 0. Copy. Description : In previous posts I explained Create ContactUs Form , Detect Browser type in jQuery , Scroll to particular link when click on link , send mail with images using gmail in asp.net and many relating articles in asp.net , jQuery . 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Are managed and restored purely by the LoadPostData method all the time, form as long as grab... Attribute value `` Label '' found from the initial Page_Load ( 'idv ' ) =. Now you see that Label2 has been included to hold a value set a. N'T change this behavior declaring a class that needs to assign in ViewState, which 'forgets ' Label values ''... Selected column unbolded and not italicized class to store the property and get... Get access to a control can be found from the aspx markup as `` ''... When `` Button '' the other hand, if you disable ViewState, which 'forgets Label! Uses an instance of the page > Right click > view source > copy the ViewState refreshes the has. To store the property values gridview to display a bold and italicized column ) return the value a types! Of both Label1 and TextBox1 Javascript can not alter ViewState, which 'forgets ' Label values? not... Use to cause the gridview to display a bold and italicized column ) # f00 '... 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