myshop.aspx.cs

来自「有关购物的程序」· CS 代码 · 共 148 行

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

namespace shopping.受保护窗体
{
	/// <summary>
	/// Myshop 的摘要说明。
	/// </summary>
	public class Myshop : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.HyperLink HyperLink2;
		protected System.Web.UI.WebControls.HyperLink HyperLink1;
		protected System.Web.UI.WebControls.DataGrid DataGrid1;
		protected System.Web.UI.WebControls.Label Label1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(!Page.IsPostBack)
			{
				this.Label1.Text="尊敬的"+Session["username"].ToString()+"店主!你好！<br>你准备出售的商品列表>>";
				DataGrid();
			}
		}
		private void DataGrid()
		{
			string str="Provider=Microsoft.Jet.OleDb.4.0;";
			str+=@"Data Source=";
			str+=Server.MapPath("usergoods.mdb");
			OleDbConnection conn=new OleDbConnection(str);
			conn.Open();
			string strsql="select 商品ID,Mygoods.商品名称,数量,价格 from Mygoods,goods where 供应商='"+Session["username"].ToString()+"' and Mygoods.商品ID=goods.商品号";
			OleDbCommand comm=new OleDbCommand(strsql,conn);
			comm.CommandType=CommandType.Text;
			OleDbDataAdapter oda=new OleDbDataAdapter();
			oda.SelectCommand=comm;
			DataTable dt= new DataTable("shopping");
			oda.Fill(dt);
			DataGrid1.DataSource=dt;
			DataGrid1.DataBind();
			conn.Close();
			
		}
		

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.DataGrid1.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged);
			this.DataGrid1.CancelCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_CancelCommand);
			this.DataGrid1.EditCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_EditCommand);
			this.DataGrid1.UpdateCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_UpdateCommand);
			this.DataGrid1.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_DeleteCommand);
			this.DataGrid1.SelectedIndexChanged += new System.EventHandler(this.DataGrid1_SelectedIndexChanged);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void DataGrid1_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			DataGrid1.EditItemIndex=e.Item.ItemIndex;
			DataGrid();
		}

		private void DataGrid1_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			string str="Provider=Microsoft.Jet.OleDb.4.0;";
			str+=@"Data Source=";
			str+=Server.MapPath("usergoods.mdb");
			OleDbConnection conn=new OleDbConnection(str);
			conn.Open();
			string strsql="select 数量 from goods where  商品号='"+e.Item.Cells[0].Text+"'";
			OleDbCommand comm=new OleDbCommand(strsql,conn);
			comm.CommandType=CommandType.Text;
			int num=(int)comm.ExecuteScalar();
			num--;
			if(num==0)
			{
				comm.CommandText="delete from Mygoods where 供应商='"+Session["username"].ToString()+"' and 商品ID='"+e.Item.Cells[0].Text+"'";
				comm.ExecuteNonQuery();
				comm.CommandText="delete from goods where 商品号='"+e.Item.Cells[0].Text+"'";
				comm.ExecuteNonQuery();
			}
			else
			{
				comm.CommandText="update goods set 数量="+num.ToString()+" where 商品号='"+e.Item.Cells[0].Text+"'";
				comm.ExecuteNonQuery();
			}
			conn.Close();
			DataGrid();
		}

		private void DataGrid1_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
		{
			DataGrid1.CurrentPageIndex=e.NewPageIndex;
			DataGrid();
		}

		private void DataGrid1_SelectedIndexChanged(object sender, System.EventArgs e)
		{
		
		}

		private void DataGrid1_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			DataGrid1.EditItemIndex=-1;
			DataGrid();
		}

		private void DataGrid1_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			string str="Provider=Microsoft.Jet.OleDb.4.0;";
			str+=@"Data Source=";
			str+=Server.MapPath("usergoods.mdb");
			OleDbConnection conn=new OleDbConnection(str);
			conn.Open();
			string strsql="update goods set 数量="+((TextBox)e.Item.Cells[3].Controls[0]).Text+",商品名称='"+((TextBox)e.Item.Cells[1].Controls[0]).Text+"',价格='"+((TextBox)e.Item.Cells[2].Controls[0]).Text+"' where 商品号='"+e.Item.Cells[0].Text+"'";
			OleDbCommand comm=new OleDbCommand(strsql,conn);
			comm.CommandType=CommandType.Text;
			comm.ExecuteNonQuery();
			conn.Close();
			DataGrid();
		}
	}
}