Why does the page keeps its previous state if EnableViewState is set to false?

Bir soru sorun

27 Temmuz 2012 Cuma 11:33

0
A very basic question, in a very simple scenario:

In trying to understand the Web Forms model page lifecycle and the View State mechanism implementation of a way to keep page states,

I have the following scenario: a blank page, with a text box and a button.

Why is it that if I set the page EnableViewState property to False, the contents I put in the text box are kept after hitting the button and thus generating a postback? The only way, as far as I understand, that that could happen is if the server side could have any mechanism of pointing out - after the creation of all the page objects, as defined in the aspx file - from scratch, at every new round trip to the server - whether some of this objects have had their properties changed - and in such cases apply them after the Page initialization stage completes.

However, after reading aware of the confusion about EnableViewState and ViewStateMode, I understand that... ViewStateMode is subjugated to EnableViewState, and if the latter is set to false, no object in the page is allowed to store its state.

With that being said - is it not exactly what is happening in the scenario below? So where does the content of the text box could possibly come from !?
```
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication2.WebForm1" EnableViewState="false"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        <br />
        <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
    </div>
    </form>
</body>
</html>
```
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27 Temmuz 2012 Cuma 12:11

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can you check, the EnableViewState property of the page whether it is true or false, not the textbox control. Also, control state may also store the value http://msdn.microsoft.com/en-us/library/1whwt1k7.aspx

regards

joon
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27 Temmuz 2012 Cuma 12:37

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Thanks for replying, Joon.

As you can see in the code sample I posted, EnableViewState is set to false. And I did make any changes to view state at control levels.
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27 Temmuz 2012 Cuma 12:50

1
Please read the article in following URL There clearly said to the view state life cycle.

http://msdn.microsoft.com/en-us/library/ms972976.aspx
With Thanks and Regards
Sambath Raj.C
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Happy Programming!
- Yanıt Olarak İşaretleyen Bob ShenMicrosoft Contingent Staff, Moderator 03 Ağustos 2012 Cuma 15:01
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