InsertParameters For SqlDataSource

Hello, I have a SqlDataSource named "OrderHistoryDataSource" that I want to add a parameter to from the code behind file. THe reason I want to do this is todynamicly  add the UserID from a currently logged on user. What am I doing wrong? Is there a better way?My code below:
 --------------------------------------------------------------------Code behind file----------------------------------------------------------------------------
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class OrderHistory : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//If the user is not logged in this will redirect to Login.aspx
if (!Request.IsAuthenticated)
{
Response.Redirect("~/Login.aspx");
}

//test to display userID
MembershipUser myObject = Membership.GetUser();
string UserGUID = myObject.ProviderUserKey.ToString();

SqlDataSource DataSource = Page.FindControl("OrderHistoryDataSource");

DataSource.InsertParameters.Add("CurrentUserId", UserGUID.ToString());

DataSource.Select();
}
}
  
  --------------------------------------------------------------------Asp.net
file----------------------------------------------------------------------------<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="OrderHistory.aspx.cs" Inherits="OrderHistory" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="CONTENT" Runat="Server">
<table id="ContentTable">
<tr>
<td id="ContentTitleCell" colspan="3" style="width: 684px">
ORDER HISTORY</td>
</tr>
<tr>
<td colspan="3" rowspan="2" style="width: 684px">
<asp:GridView ID="OrderHistoryGrid" runat="server">
</asp:GridView>
 
<asp:SqlDataSource ID="OrderHistoryDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT * FROM [UserOrders] WHERE ([UserID] = [CurrentUserID]) ORDER BY [OrderID]

VALUES (@UserId, @Address, @City, @State, @Zip)"
ProviderName="<%$ ConnectionStrings:ConnectionString.ProviderName %>">
<InsertParameters></InsertParameters>
</asp:SqlDataSource>
</td>
</tr>
<tr>
</tr>
</table>
</asp:Content>