Encrypting Querystring values in browser's URL

Hi friends...
How do i encrypt the querystring URL while redirecting to other pages...pls go through my code
Design Page

 <asp:TemplateField HeaderText="Edit">
    <ItemTemplate>
    <a href="QueryStringApplication.aspx?id=<%#Eval("id") %>">
    <asp:Label ID="lblEditt" runat="server" Text="Edit"></asp:Label>
    </a>
    </ItemTemplate>
</asp:TemplateField>

.cs

//Page Load
if (Request.QueryString["id"] != null)
            {                
                Edits();
            }
UDF 
  protected void Edits()
    {
        int id = Convert.ToInt32(Request.QueryString["id"].ToString());
        SqlConnection cnn = new SqlConnection(Conn);
        SqlCommand cmd = new SqlCommand("sp_NameAgeById", cnn);
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Parameters.AddWithValue("@id", id);
        SqlDataAdapter ada = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        ada.Fill(ds);
        txtName.Text = ds.Tables[0].Rows[0]["Name"].ToString();
        txtAge.Text = ds.Tables[0].Rows[0]["Age"].ToString();        
    }

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