How to Encrypt Url in asp.net with c#

Through Parameter for Encryption i have written one class file.Its Works Fine where Response.Redirect("") another page.But if i want to Redirect with in the page in pageload.But my Encryption class file it check everything in my application.In page Respose.Redirect("samepage.aspx").The page is hanging.Iam encrypting only parameter
sample code:

try
{
if (!IsPostBack)
{


Form.Action = QuertStringModule.Encrypt(Request.Url.ToString());
Response.Redirect("ManageUser.aspx?ID=1");

}
}
catch (Exception ex)
{
ex.ToString();
}

But the page is hanging.butif i redirect the page its working fine.