add_order.aspx.cs

本文介绍了在Visual Studio.net环境下开发一个教材库管理系统的过程。创建了一套行之有效的方案。文章介绍了管理系统的系统分析部分

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 System.Data.SqlClient;
using System.Configuration;
using System.Timers;


namespace jiaocaiku
{
	/// <summary>
	/// add_order 的摘要说明。
	/// </summary>
	public class add_order : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox zdbh;
		protected System.Web.UI.WebControls.TextBox bookid;
		protected System.Web.UI.WebControls.TextBox kcid;
		protected System.Web.UI.WebControls.TextBox num;
		protected System.Web.UI.WebControls.TextBox addtime;
		protected System.Web.UI.WebControls.Button ok_modify;
		protected System.Web.UI.WebControls.Button cancel_modify;

		string ttt;

	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(!Page.IsPostBack)
			{
				if (Session["username"]==null)
				{
					Response.Redirect("default.aspx");

				}
				else
				{
					
					SqlConnection conn=new SqlConnection(ConfigurationSettings.AppSettings["connstr"].ToString());
					conn.Open();
					SqlCommand cmd=new SqlCommand("select * from teacher where teacherid='"+ Session["username"].ToString() +"'",conn);
					SqlDataReader dr=cmd.ExecuteReader();
					if (dr.Read())
					{
						kcid.Text=dr["kcid"].ToString();

					
					}
					conn.Close();
					dr.Close();


					Random rd=new Random();
					int abc=rd.Next(0,9999);
					ttt="C"+System.DateTime.Now.Year+System.DateTime.Now.Month.ToString()+System.DateTime.Now.Day.ToString()+System.DateTime.Now.Hour.ToString()+System.DateTime.Now.Minute.ToString()+System.DateTime.Now.Second.ToString()+abc.ToString();
					zdbh.Text=ttt.ToString();

					
					

				}


			}
		}

		#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.ok_modify.Click += new System.EventHandler(this.ok_modify_Click);
			this.cancel_modify.Click += new System.EventHandler(this.cancel_modify_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void ok_modify_Click(object sender, System.EventArgs e)
		{
			SqlConnection conn=new SqlConnection(ConfigurationSettings.AppSettings["connstr"].ToString());
			conn.Open();
			SqlCommand cmd=new SqlCommand("select * from zd where kcid='"+ kcid.Text.ToString() +"'",conn);
			SqlDataReader dr=cmd.ExecuteReader();
			if (dr.Read())
			{
				
				Response.Write("<script>alert('您已经征订过，不能继续征订！');</script>");
			}
			else
			{
				dr.Close();		
					cmd.CommandText="insert into zd(zdbh,kcid,bookid,num,addtime)values('"+zdbh.Text.ToString()+"','"+kcid.Text.ToString()+"','"+bookid.Text.ToString()+"',"+Convert.ToInt32(num.Text.ToString())+",'"+System.DateTime.Now.ToShortDateString().ToString()+"')";

						cmd.ExecuteNonQuery();
						conn.Close();



						Response.Write("<script>alert('征订成功！');</script>");

			}
				


			}


			
		

		private void cancel_modify_Click(object sender, System.EventArgs e)
		{
			zdbh.Text="";
			bookid.Text="";
			kcid.Text="";
			num.Text="";
			addtime.Text="";

		}
	}
}