why I am getting old password in a password field in asp.net using C#?
<p>i am making a asp.net website where an user can change password .. by clicking a button <code>changepassword</code> i am redirecting to a new asp page where i have a user code field and a old password filed and a new password field like this:</p>

<pre><code>&lt;table width="100%"&gt;
    &lt;tr&gt;
        &lt;td&gt;
            &lt;asp:Label ID="Label5" runat="server" Text="User Code: "&gt;&lt;/asp:Label&gt;
        &lt;/td&gt;
        &lt;td&gt;
            &lt;asp:TextBox ID="txtusercd2" runat="server"&gt;&lt;/asp:TextBox&gt;
        &lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;
            &lt;asp:Label ID="Label6" runat="server" Text="Enter Old Password: "&gt;&lt;/asp:Label&gt;
        &lt;/td&gt;
        &lt;td&gt;
            &lt;asp:TextBox ID="txtoldpwd" runat="server" TextMode="Password"&gt;&lt;/asp:TextBox&gt;
        &lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;
            &lt;asp:Label ID="Label7" runat="server" Text="Enter New Password: "&gt;&lt;/asp:Label&gt;
        &lt;/td&gt;
        &lt;td&gt;
            &lt;asp:TextBox ID="txtnewpwd" runat="server" TextMode="Password"&gt;&lt;/asp:TextBox&gt;
        &lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;
            &lt;asp:Label ID="Label8" runat="server" Text="Re-Enter New Password: "&gt;&lt;/asp:Label&gt;
        &lt;/td&gt;
        &lt;td&gt;
            &lt;asp:TextBox ID="txtrepwd" runat="server"&gt;&lt;/asp:TextBox&gt;
        &lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;
            &lt;asp:Label ID="lblmsg2" runat="server" Text="Label"&gt;&lt;/asp:Label&gt;
        &lt;/td&gt;
    &lt;/tr&gt;

    &lt;tr&gt;
        &lt;td style="float:right"&gt;
            &lt;asp:ImageButton ID="btnchngpwd" runat="server" ImageUrl="~/images/Save.png" /&gt;
        &lt;/td&gt;
    &lt;/tr&gt;
&lt;/table&gt;
</code></pre>

<p>now the problem is when i am redirecting to that page my code filed and old password is getting populated by the user login details 
i dont want to populate the old password filed . what shold i do?</p>
