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POdo asp page variables not persist?
 

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  1. POdo asp page variables not persist?
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    <p>I have the following test ASP page:</p> <pre><code>&lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; &lt;head runat="server"&gt; &lt;title&gt;&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;form id="form1" runat="server"&gt; &lt;div&gt; &lt;asp:Label ID="Label1" runat="server" Text="Label"&gt;&lt;/asp:Label&gt; &lt;asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" /&gt; &lt;/div&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>with the following code behind:</p> <pre><code>public partial class test : System.Web.UI.Page { int x = 0; protected void Page_Load(object sender, EventArgs e) { Label1.Text = x.ToString(); } protected void Button1_Click(object sender, EventArgs e) { x++; Label1.Text = x.ToString(); } } </code></pre> <p>From a non web programming mindset I would have thought that <code>int x</code> would have been a sort of object field for the test page class and that when i do <code>x++</code> the value of <code>x</code> would persist through postbacks but it seems this is not the case. So how exactly do these feilds work in terms of persistance? I find it odd also because when you click the button the <code>Label1.Text</code> is changed to 1 the first time you click it but you can't get it past 1 after that.</p> <p>Then also once I understand why this is happening what is the easiest way to make happen what I was originally wanting? (value of <code>x</code> persists across postbacks)</p> <p>This is what it looks like now using viewstate which is what i was looking for:</p> <p>public partial class test : System.Web.UI.Page {</p> <pre><code>//static int x = 0; protected void Page_Load(object sender, EventArgs e) { if (ViewState["x"] == null) { ViewState["x"] = 0; Label1.Text = ViewState["x"].ToString(); } //Label1.Text = x.ToString(); } protected void Button1_Click(object sender, EventArgs e) { ViewState["x"] = Convert.ToInt32(ViewState["x"].ToString()) + 1; Label1.Text = ViewState["x"].ToString(); //x++; //Label1.Text = x.ToString(); } </code></pre> <p>}</p>
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    1. COsorry i think this might be a duplicate of http://stackoverflow.com/questions/7534946/are-public-properties-in-an-asp-net-code-behind-supposed-to-persist-between-page?rq=1 more or less >.<
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