Asp Control ASP.Net

<%@ Page Language="VB" %>


    Sub chkNewsletter_CheckedChanged(ByVal sender As Object, ByVal e As EventArgs)
        lblResult.Text = chkNewsletter.Checked.ToString()
    End Sub



    CheckBox AutoPostBack


    
    

            id="chkNewsletter"
        Text="Receive Newsletter?"
        AutoPostBack="true"
        OnCheckedChanged="chkNewsletter_CheckedChanged" 
        Runat="server" />
    
    
            id="lblResult"
        Runat="server" />