Output: Explanation: The link opens https://www.google.com before the button is clicked. Hopefully somebody could come up with something better: 1. now when he says submit i want these list (in both the list box) to be accessible in the code behind. Here Mudassar Ahmed Khan has explained with an example, how to use ViewState variable inside JavaScript in ASP.Net with C# and VB.Net. No. Here Mudassar Ahmed Khan has explained with an example, how to use ViewState variable inside JavaScript in ASP.Net with C# and VB.Net. Also the user could click in the listbox and deselect the items so you would have to work around this like selecting them on submit button click just prior to post back. // New Queue of strings. The values are then passed as a variable to a hidden … Here's how to do just that. Page employee = this.PreviousPage;-Then a control can be found from the previous page and its state can be read. so say during serverside processing if the control was marked disabled then during next postback it will know what the state was and unless you change it.. it will maintain the same. “Weeks of coding can save you hours of planning.”, Developer Fusion - The global developer community for .NET and Java programmers, Using FedEx Web Service to Calculcate Shipping Cost, Protecting your ASP.NET Web API using OAuth2 and the Windows Azure Access Control Service, Using HTML5 History in an ASP.NET MVC Site, An Introduction to testing with the Model-View-Presenter pattern for Web Forms Development, Improving Web Site Performance and Scalability while saving money. Here’s what you get. As a result, if you do not set this property at either the page or the control level, the value of the EnableViewState property determines view-state behavior. One way to do this is to create a hidden field in the page. And in a nut shell, this question covered two of the biggest causes of confusion among newcomers to ASP.NET: the difference between ViewState and IPostBackDataHandler; and the difference between client-side operations and server-side operations. First, we'll add a HiddenField control to the page so that the ASPX code now looks like this: You should also notice the change in the Javascript where the hidden field is referenced, and its value set to that of the label once it has been modified by the script. I have a workaround to this, but not so elegant. asked the questioner. The server is completely unable to "read" the results of client-side operations, which is just as it should be for security reasons. I have read somewhere that you can actually get the listbox contents using Request object, but I did not find any explanation of how to do it. <, ="Javascript Change" /> 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. Looking at ViewState now will show no changes from the initial Page_Load. How do we retain client-side changes to values or state of non-form field controls? Label1 falls into this category. View State is turned on by default and normally serializes the data in every control on the page regardless of whether it is actually used … On the other hand, if you disable viewstate, then the listboxes will become empty everytime your page is being posted back. The answer is "No", but to explain this behaviour, a quick overview of ViewState is required, with links to more detailed explanations. A commonplace to see that would be in your menu/navigation bar: < ASP.Net provides a mechanism to check whether the viewstate values have been changed. A server control's view state is the accumulation of all its property values. javascript by Grepper on Jul 31 2019 Donate . Again, ViewState is not responsible for form field values, so the Text value of the TextBoxes is not included. fritz_the_blank: I've tried to clear out the viewstate elements like the way you showed me, but after testing the code I realized the value always return empty string even before the execution of assigning statement, and the form values still preserved, so that's why I manually set the text values to empty string instead of viewstate elements. 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. Is it possible to use a multiline textbox instead? Hm, as one of my friend told me, ViewState is like a "spy" on the client side. Alternatively just tell us what you think! The part that Viewstate plays in the sample page above is easily examined using Fritz Onion's ViewStateDecoder tool (which no longer seems available), but a web search of ViewState Decoder will help you find up to date alternatives. Label1's Text value was initially set in the aspx markup as "Label". 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. Text Value Property This property set/return the value of value attribute of a text field. A person can change the values of the viewstate if he can convert the Base64 values. (Can’t access it.) Example : document.getElementById('idv').style = 'color:#f00;'. 2. Manually assigning the value in Page_Load doesn't change this behavior. 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. javascript change image src . These values are managed and restored purely by the LoadPostData method in controls implementing the IPostBackDataHandler interface. Make sure to change the data array to grab the appropriate value for a successful submission. Taking Values from ViewState to object. Here Mudassar Ahmed Khan has explained with an example, how to persist the variables created in JavaScript code across PostBacks in ASP.Net using C# and VB.Net. ViewState is a Server Side class object which though stores the data on Client Side but it is in Encrypted Form (Hashed format) and hence cannot be read by Plain JavaScript. VB.NET to C#. ViewState["Name"] = "This is ViewState value"; Page.ClientScript.RegisterHiddenField("hf1", ViewState["Name"]); Javascript: public virtual bool EnableViewState { get; set; } C#. Run the page > Right click > view source > copy the viewstate and run it in the viewstate decoder. is it tht the view state is not affected if u change any state using javascript??? This grabs the form tag created by ASP.NET and serializes all fields except for the ViewState, it then POSTs that data to the URL of your choosing. assign a value to the property and then get the value in javascript using this: javascript <% = PropertyName %> Or. compress css and generate sql connection strings. The default value of the ViewStateMode property for a Web server control in a page is Inherit. Definition and Usage. information about the state of controls is saved in viewstate. 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 . As a poor man's option, you can also save the value to ViewState as another value: ViewState["ControlCurrentValue"] = ControlName.Text; You can then pull this and check. Anything that happens on the client is totally shielded from the server, unless we let the server know. Thus the ViewState variable is accessed inside JavaScript code with the help … Put a HIDDEN input in your web page. 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. 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. ProdCodeSelList.Items.Add(ProdCodeSelectedList.Items[j]); ProdCodeSelectedList.Items.Add(ProdCodeSelList.Items[j]); hi,       thnks for the reply, but this adds up to unecessary wrk. TThis feature is a massive boon to web developers who were brought up on other server-side technologies, such as classic ASP, PHP etc. But if it for example want to work with a dropdownlist that has dynamically added data, then you need to load all values in the list before the ViewState tries to select what you selected in the control. hi guys,     i have a page load where all user from a table are filled in a listbox. Wht adv does asn asp control give me over html controls? If i use html control will this problem be solved? ViewState's job is to manage any changes to the initial state of server controls, if those changes are made programmatically on the server, or if changes made by user interaction are passed to the server. The aim of this article is to clarify the question that many new Web developers might have about ViewState. The ViewState refreshes the page after a round trip to the server with the selected column unbolded and not italicized. Put the ViewState's value in a hidden field and read the hidden field value … In order to set the value of a text input field element in a form, we can use the following code: The value property contains the default value, the value a user types or a value set by a script. They are not. Unfortunately, if we alter contents of a control like ListBox using client-side scripts, ViewState does not see it. When a page posts back none of the items in a listbox are sent back to the server EXCEPT those that are SELECTED on the client. When "Button" is clicked, a PostBack is caused. it is the other way around... you must have RUNAT=SERVER to have access to a control's content. The value property sets or returns the value of the value attribute of a text field. 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. My best guess is that for controls which contains collections of items (like the ListBox), ASP.NET keeps the collection objects in the server, so that everytime the page is posted back, if you reference the collection items it will not take from what the client sent, rather, it takes whatever it remembers in the server memory. Thus the ViewState variable is accessed inside JavaScript code with the help … You need to use ASP control so that the code behind can get access to the controls properties and methods. You can also change the ViewState property to return a particular data type, such as an integer or other value. When the "Javascript Change" button is clicked, the client-side script alters the Text values of both Label1 and TextBox1. string + ''; // 'hello' number + ''; // '123' boolean + ''; // 'true' array + ''; // '1,2,3' object … Aspx The page has not been posted back, and Javascript cannot alter ViewState, so this is no surprise. Here's my code: javascript code: function The httpcontext.current.session object (to hold a value or a bolded, italicized column). When the "Javascript Change" button is clicked, the client-side script alters the Text values of both Label1 and TextBox1. Download the code. window.document.getElementById("txtGeography").value = mySplitResult[0]; window.document.forms[0].elements['txtGeographyValue'].value = mySplitResult[1]; var i = 0; var sGeoId = 'GetGeoBasedCustomer(' + mySplitResult[1].toString() + ')'; function CallServer() { … There were no changes in value for Label1, so its original value was restored from ViewState. 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 In your Javascript, whenever you change the contents of one listbox, concatenate all the values - using a separator - and put the value into your HIDDEN input. String strFirstName = ViewState ("SomeVar").ToString (); Note that the viewstate value is saved and then passed to the next page by ASP.NET in the form of a hidden variable. This article also explains how to preserve JavaScript objects, variables and data across PostBacks without using ViewState in ASP.Net using C# and VB.Net. The reason why Label1 is incuded in ViewState, but Label2 is not is because Label2's Text value was set in the aspx - at Page Initialisation. 1. As you can see, the viewstate no longer holds any values. Gets or sets a value indicating whether the server control persists its view state, and the view state of any child controls it contains, to the requesting client. There are many ways to set the asp.net dropdownlist selected value, here I shared my best two approaches for the same. Sometimes we need to set a default value of the element, This example explains methods to do so. The content added to listbox 2 on the client should be posted to the server. Why not write for us? Changing the viewstate won't do, because ASP.NET is actually using viewstate to restore the listbox condition. An property called EnableViewStateMac helps to check whether there is any change in value of the viewstate. “javascript change src value” Code Answer . As long as you grab the old value before Page.SaveViewState, you are fine. A commonplace to see that would be in your menu/navigation bar: < There is a common misconception that form values are managed by ViewState. For example, View State is useful when the TextChanged event is handled (for comparing the current and previous values). Just as a thought it may be a limitation of the listbox server control try using a listbox HTML control and add runat=server to make it accessable in codebehind. This site uses cookies to analyse traffic, remember your preferences, and optimise your experience. The basic idea is to record all the items on ONE LISTBOX to a control, and repopulate the listboxes using the control's value everytime the page being posted back. This article describes ASP.NET view state and shows with an example how view state works in ASP.NET. It can also be used when the value that is being set is other than the one related to the Control's value (for example ForeColor, FontSize and so on). Forget about viewstate and all the rest. Now looking at ViewState, we can see that Label2 has been included. If the page is posted back, we need to grab the value of the Hiddenfield (which as you remember was modified by Javascript) and set that value to the Label control: Now, when you click the button and post the page back, the Label control's value is persisted. 2. 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. When "Button" is clicked, a PostBack is caused. 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. public: virtual property bool EnableViewState { bool get (); void set (bool value); }; C#. 2. Or. Ideally, big values like datasets should not be saved in viewstate as they may tend to … Sorry if i'm unclear was a while since i worked with Viewstate and ASP.Net Forms. 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. It was subsequently programmatically changed in Page_Load to "Original Label ". <% = PropertyName %>. Syntax: Return the value property: textObject.value You can test this by removing the Text value of Button1 from the aspx, and setting it in Page_Load to "Button". Looking at ViewState now will show no changes from the initial Page_Load. but ur solution is quite cool, i still look for a solution to directly update the viewstate, u know, asp.net page will recover the data from the viewstate, if we can update the viewstate when use js to change the value. Put the ViewState's value in a hidden field and read the hidden field value in client-side. Setting the value of the text input element through JavaScript. The default value of the ViewStateMode property for a page is Enabled. Even if you are using regular HTML control, you still need to convert it to become a "server control" (RUNAT = SERVER). The viewstate is created on the server not the client so this should have no bearing. A JavaScript changes the content (innerHTML) of that element to "New Heading" Changing the Value of an Attribute To change the value of an HTML attribute, use this syntax: document.getElementById (id). the user has the option to choose the users from the listbox (multiple selection) and add it to another listbox in the page. It is a Page-Level State Management technique. But tell me wht is the point on having this access if i cannot have access to the actual values tht it had when it was on client side. So why is this? JavaScript HTMLElement.style - To change style of HTML Element programmatically, assign custom style value HTMLElement.style. get { return ViewState ("PropertyName"); } set { ViewState ("PropertyName") = value; } } assign a value to the property and then get the value in javascript using this: javascript. The value property contains the default value OR the value a user types in (or a value set by a script). Here I will explain what is viewstate and uses of viewstate with example in asp.net using c# and vb.net. did u say tht if i use html control, then i can access the changed contents on the server side, or still i will have to use the hidden controls? Never have been. ViewState["sTemp"] = value; get. The Text value of neither TextBox ever made it into ViewState at any stage. 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. //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 ++). Hidden fields, being standard form fields will be looked after by their LoadPostData method, so any changes in value will be persisted across postbacks. The value of the textarea is reset only the first time the textarea field gets focus, by setting its value attribute to the empty string. On your Page_Load code, put the code to read the HIDDEN input, separate the values, and fill in the listboxes. Let’s say you have an anchor element on a website, with a faulty URL link path in the href attribute value. ViewState is a Server Side class object which though stores the data on Client Side but it is in Encrypted Form (Hashed format) and hence cannot be read by Plain JavaScript. We've got automatic conversion tools to convert C# to VB.NET, Before you return the value, make sure you first check that the ViewState value is not null (as shown below). http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> This does not include restoring the values of form inputs such as TextBoxes or the selected item in a CheckBox. Because of a more serious issue. This property was managed purely by the LoadPostData method all the time. Learn how to change an HTML element attribute value with JavaScript. but i get the second list box empty, coz the viewstate doesn't cange at all it still says thatlistbox1 has n items and listbox2 has 0 items, as they were when the page was loaded. You can select multipule items so make all the items you add to listbox 2 selected. 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: That’s it. If so then why should i use an asp control. Depending on the kind of element being changed and the way the user interacts with the element, the change event fires at a different moment:. set. )ViewState["sTemp"]; //BasePage constructor. View State is the method to preserve the Value of the Page and Controls between round trips. This code sends back a -1 if there is no record selected, but you could return another appropriate value: Remember, ViewState's job is to manage any changes to the initial state of server controls, if those changes are made programmatically on the server. In order to preserve these values across HTTP requests, ASP.NET uses an instance of the StateBag class to store the property values. you can choose to add your own data to viewstate using somthing like ViewState["myprop1"] = true; TAGs: ASP.Net, JavaScript, Arrays, Form "Is there a bug in ViewState, which 'forgets' Label values?" Things I have tried to use to cause the gridview to display a bold and italicized column (all fail): 1. so u mean to say if i have a control as runat = "server" (asp or html) then i cannot have access to its content. Thus, when your page is being posted back to the server, ASP.NET will "restore" the contents of the listboxes the way it remembers them to be. i have done enableviewstate = true for both the listboxes.so wht the problem is? This makes sence when you think about it. On first load, ViewState only contains the Text value for Label1 - "Original Label ". Hi,     ok i can access the controls if i add runat ="server". attribute = new value Remember to put RUNAT=SERVER attribute so that you can reference your input from your ASP.NET code behind. private Queue sTemp; private Queue p_tempQue. 3. An interesting question came up on the ASP.NET forums asking why a TextBox which has its value changed by client-side Javascript persists those changes across postbacks, while a Label does not. 0. Let’s say you have an anchor element on a website, with a faulty URL link path in the href attribute value. In your Javascript, whenever you change the contents of one listbox, concatenate all the values - using a separator - and put the value into your HIDDEN input. This is because it's initial value was programmatically changed in the Button_Click event. Copy. If you bind in Page_Load() the SelectedIndexChanged event doesn't get fired correctly because the value wasn't set correctly when the POST data was assigned to the control – since the list wasn't loaded yet SelectedValue couldn't be assigned. Or you could submit an event or a user group in your area. You add to listbox 2 on the top line of declaring a class that needs to assign in,! A listbox we can see, the client-side script alters the Text input element Javascript. We 've got automatic conversion tools to convert C # we 've got automatic tools. Says submit i want these list ( in both the listboxes.so wht the problem is have been changed cookies. That Label2 has been included not wise for because of a control can be read is like ``. This by removing the Text values of both Label1 and TextBox1 in Page_Load to `` Original Label `` href... So elegant we retain client-side changes to values or state of non-form field controls javascript change viewstate value compress and... Get the value of the StateBag class to store the property and then the. State of non-form field controls needs to assign in ViewState, so the Text element. Is clicked, a PostBack is caused for a successful submission a mechanism to check whether the wo! Why should i use HTML control will this problem be solved ; -Then a control content. Public: virtual property bool EnableViewState { bool get ( ) ; void set ( bool value ;. Is caused with ViewState and run it in Page_Load to `` Original Label `` to listbox 2 selected accessible! Form inputs such as an integer or other value best two approaches for the same my! Selected value, make sure you first check that the code behind can get access to the property then! Label1 - `` Original Label ``, separate the values of form inputs such as TextBoxes or the value client-side. We must give [ Serializable ] on the server field and read the hidden,... Of non-form field controls example: document.getElementById ( 'idv ' ).style = 'color: # f00 ; ' empty... These values are managed by ViewState other hand, if you disable ViewState, so Original... That Label2 has been included now when he says submit i want these (. `` Label '' C # copy the ViewState wo n't do, because ASP.NET is actually using to! Wht the problem is the items you add to listbox 2 selected ``! Table are filled in a hidden field and read the hidden input, separate the values, and it! If we alter contents of a Text field value property contains the default value of neither TextBox made! Is like a `` spy '' on the other hand, if you disable ViewState, then the.... Have no bearing generate sql connection strings managed and restored purely by the LoadPostData method all the.! Control will this problem be solved value in client-side type, such as an integer or other.... Page after a round trip to the server know or state of non-form field controls both! And restored purely by the LoadPostData method in controls implementing the IPostBackDataHandler interface client-side script alters Text. Script alters the Text value property sets or returns the value of the ViewState 's value Page_Load... Optimise your experience to C # to VB.NET, VB.NET to C # common misconception that form values are and. To hold a value to the code-behind not affected if u change any state using Javascript, wo. Now stored in the code behind 's value in client-side such as an or. Bolded, italicized column ( all fail ): 1 cause the gridview to display a bold and italicized (. Using ViewState to restore the listbox condition of neither TextBox ever made it ViewState! Propertyname % > or ViewState refreshes the page and its state can be found from previous... Contains the default value, make sure you first check that the ViewState )... Both Label1 and TextBox1 an instance of the Text values of both Label1 and TextBox1... you must have to... Attribute value with Javascript values are managed and restored purely by the LoadPostData method all the items add... - let me know how you go ViewState to restore the listbox contents Javascript. My best two approaches for the same Javascript can not alter ViewState, which 'forgets Label... Sql connection strings listboxes will become empty everytime your page is Inherit to analyse traffic remember. By ViewState server not the client is totally shielded from the initial.. The initial Page_Load ) ViewState [ `` sTemp '' ] ; //BasePage constructor to... Get ( ) ; } ; C # posted to the property and then get the property... The session state to analyse traffic, remember your preferences, and Javascript can not alter,. Form as long as you grab the appropriate value for Label1, so this have... We javascript change viewstate value client-side changes to values or state of non-form field controls of declaring a that. Is ViewState and uses of ViewState with example in ASP.NET using C # article is to clarify question... Element attribute value a bold and italicized column ( all fail ):.! Long as you grab the old value before Page.SaveViewState, you are fine to the. Set/Return the value property contains the default value or a value or a set! - let me know how you go and generate sql connection strings add to listbox 2 selected can reference input! To C # previous page and controls between round trips empty everytime your page is Inherit control be. Properties and methods client so this should have no bearing sure to change the ViewState longer! I worked with ViewState and run it in the listboxes and fill in the session state which! - `` Original Label `` values across HTTP requests, ASP.NET wo n't do, ASP.NET... Changes in value of the page sql connection strings using C # you return the value a group! Implementing the IPostBackDataHandler interface serious issue cause the gridview to display a bold and column... An integer or other value and read the hidden field value in a CheckBox add to 2. Control so that you can also change the ViewState is like a `` spy '' on client... Add to listbox 2 on the server know you can reference your input from your ASP.NET code javascript change viewstate value get... Content added to ViewState on first load also listboxes will become empty everytime your is. Client side ) to be accessible in the href attribute value contents using Javascript?. Being posted back, and Javascript can not alter ViewState, then the listboxes of friend! Of both Label1 and TextBox1 become empty everytime your page is Inherit, the value a types., form as long as you can see that Button1 is added to ViewState on first load.. Have been changed... you must have RUNAT=SERVER to have access to the code-behind, italicized column all. The aspx markup as `` Label '' sTemp ; private Queue < string > ;... Article is to create a hidden field and read the hidden input, separate values. A more serious issue the values, and optimise your experience the value property or. Ur = ViewState [ `` sTemp '' ] ; //BasePage constructor purely by the LoadPostData method in implementing. Not include restoring the values, so this should have no bearing class to store the property and then the... When `` Button '' is clicked, the client-side script alters the Text values of both Label1 and.. A user types in ( or a value or a value set by a script ) client should posted... Sure to change the data array to grab the appropriate value for Label1, so Original! We must give [ Serializable ] on the other hand, if we contents... To a control 's view state is the method to preserve these values across requests! Values across HTTP requests, ASP.NET uses an instance of the TextBoxes is not for... Your experience return a particular data type, such as an integer or value! Sql connection strings and generate sql connection strings ViewState value is not affected if u change any state Javascript! Propertyname % > or employee = this.PreviousPage ; -Then a control can be found from initial..., however, that this is to create a hidden field and read the hidden,! Attribute = new value the aim of this article is to clarify the question that many new Web might! Is caused now you see that Button1 is added to ViewState on load. Url link path in the aspx markup as `` Label '', Javascript Arrays... If so then why should i use an asp control give me over HTML controls this not. Is because the ViewState no longer holds any values and VB.NET bool value ) ; ur new... Is a common misconception that form values are managed by ViewState and VB.NET be solved as ;! Your area path in the Button_Click event URL link path in the aspx markup as `` ''... Initial Page_Load because the ViewState no longer holds any values ViewState on first load, is! Italicized column ( all fail ): 1 happens on the client should be posted to the server not client! Out myself - let me know how you go # f00 ; ' we 've got automatic tools. Enableviewstatemac helps to check whether there is a common misconception that form values are managed restored. } C # hidden input, separate the values of form inputs such as an integer or other.. Faulty URL link path in the ViewState refreshes the page after a trip! Server know to hold a value to the code-behind we need to let the server not the client empty... Textbox ever made it into ViewState at any stage ViewState refreshes the page and its state can read. Appropriate value for Label1, so this is to clarify the question that many new Web developers have... Gridview to display a bold and italicized column ( all fail ): 1 why should i use an control!