using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using shop.DbBase;

namespace shop
{
	/// <summary>
	/// queryOrder 的摘要說明。
	/// </summary>
	public class queryOrder : System.Web.UI.Page
	{

		#region user defined private variables
		string sUserId;
		string sOrderId;
		string sOrderResult;
		double dSum;
		DataTable dtOrderDetail;
		#endregion
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此處放置用戶代碼以初始化頁面
			if(!object.Equals(Session["UserId"],null))
			{
				sUserId = Session["UserId"].ToString();
				string sSql = "Select OrderId,result from Orders where userId=" + sUserId + " order by OrderId desc";
				DataSet dsOrders = OleBase.ExecuteSql4Ds(sSql);
				dlOrders.DataSource = dsOrders.Tables[0].DefaultView;
				dlOrders.DataBind();
				bool bOrderIdExists = true;
				if(Request.QueryString["OrderId"] != "")
				{
					sOrderId = Request.QueryString["OrderId"];
					bOrderIdExists = false;
					for(int i=0;i<dsOrders.Tables[0].Rows.Count;i++)
						if(sOrderId == dsOrders.Tables[0].Rows[i].ItemArray[0].ToString())
						{
							sOrderResult = dsOrders.Tables[0].Rows[i].ItemArray[1].ToString();
							dtOrderDetail = ShowOrderDetail();
							lblSum.Text = dSum.ToString();
							lblStatus.Text = sOrderResult;
							dgOrderDetails.DataSource = dtOrderDetail.DefaultView;
							dgOrderDetails.DataBind();
							bOrderIdExists = true;
						}
				}
				if(!bOrderIdExists)
					lblError.Text = "您所查詢的訂單號不存在！";
			}
			else
				Response.Redirect("userEntry.aspx?OldUrl=queryOrder.aspx");
		}

		#region Web 窗體設計器生成的代碼
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 該調用是 ASP.NET Web 窗體設計器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
		/// 此方法的內容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.btnQuery.Click += new System.EventHandler(this.btnQuery_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		/// <summary>
		/// 查詢訂單詳細信息
		/// </summary>
		private DataTable ShowOrderDetail()
		{
			string sSql = "Select OrderId,ProductId,Quantity,UnitCost,ProductName from OrdersDetail where orderId=" + sOrderId;
			DataTable dtTemp = OleBase.ExecuteSql4Ds(sSql).Tables[0];
			for(int i=0;i<dtTemp.Rows.Count;i++)
				dSum += int.Parse(dtTemp.Rows[i].ItemArray[2].ToString())*double.Parse(dtTemp.Rows[i].ItemArray[3].ToString());
			lblSum.Text = dSum.ToString();
			return dtTemp;
		}

		private void btnQuery_Click(object sender, System.EventArgs e)
		{
			Response.Redirect("queryOrder.aspx?OrderId=" + txtOrderId.Text);
		}
	}
}