managenews.aspx.cs

酒店管理系统

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;

namespace hotel.manage
{
	/// <summary>
	/// managenews 的摘要说明。
	/// </summary>
	public class managenews : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.LinkButton LinkButton1;
		protected System.Web.UI.WebControls.DataGrid DataGrid1;
		protected System.Data.SqlClient.SqlConnection sqlConnection1;
		protected System.Data.SqlClient.SqlDataAdapter sqlDataAdapter1;
		protected System.Data.SqlClient.SqlCommand sqlSelectCommand1;
		protected System.Data.SqlClient.SqlCommand sqlInsertCommand1;
		protected hotel.manage.DataSet5 dataSet51;
		void bindData()
		{
			sqlDataAdapter1.Fill(dataSet51);
			DataGrid1.DataBind();
		}
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			if(!Page.IsPostBack)
			{
				bindData();
			}
		}
		private void  bind()
		{
			SqlConnection con =DB.createCon();
			con.Open ();
			SqlDataAdapter sda=new SqlDataAdapter ();
			sda.SelectCommand =new SqlCommand ("select * from news",con);
			DataSet ds=new DataSet ();
			sda.Fill (ds,"news");
			this.DataGrid1.DataKeyField="newsid";
			this.DataGrid1.DataSource =ds.Tables ["news"];
			this.DataGrid1.DataBind() ;

		}

		#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.sqlConnection1 = new System.Data.SqlClient.SqlConnection();
			this.sqlDataAdapter1 = new System.Data.SqlClient.SqlDataAdapter();
			this.sqlInsertCommand1 = new System.Data.SqlClient.SqlCommand();
			this.sqlSelectCommand1 = new System.Data.SqlClient.SqlCommand();
			this.dataSet51 = new hotel.manage.DataSet5();
			((System.ComponentModel.ISupportInitialize)(this.dataSet51)).BeginInit();
			this.LinkButton1.Click += new System.EventHandler(this.LinkButton1_Click);
			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.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);
			this.DataGrid1.SelectedIndexChanged += new System.EventHandler(this.DataGrid1_SelectedIndexChanged);
			// 
			// sqlConnection1
			// 
			this.sqlConnection1.ConnectionString = "workstation id=\"TWJ-9490D5784F6\";packet size=4096;user id=sa;data source=\".\";pers" +
				"ist security info=True;initial catalog=twj;password=sa";
			// 
			// sqlDataAdapter1
			// 
			this.sqlDataAdapter1.InsertCommand = this.sqlInsertCommand1;
			this.sqlDataAdapter1.SelectCommand = this.sqlSelectCommand1;
			this.sqlDataAdapter1.TableMappings.AddRange(new System.Data.Common.DataTableMapping[] {
																									  new System.Data.Common.DataTableMapping("Table", "news", new System.Data.Common.DataColumnMapping[] {
																																																			  new System.Data.Common.DataColumnMapping("newsid", "newsid"),
																																																			  new System.Data.Common.DataColumnMapping("title", "title"),
																																																			  new System.Data.Common.DataColumnMapping("content", "content"),
																																																			  new System.Data.Common.DataColumnMapping("newtime", "newtime"),
																																																			  new System.Data.Common.DataColumnMapping("source", "source")})});
			// 
			// sqlInsertCommand1
			// 
			this.sqlInsertCommand1.CommandText = "INSERT INTO news(newsid, title, content, newtime, source) VALUES (@newsid, @title" +
				", @content, @newtime, @source); SELECT newsid, title, content, newtime, source F" +
				"ROM news";
			this.sqlInsertCommand1.Connection = this.sqlConnection1;
			this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@newsid", System.Data.SqlDbType.Int, 4, "newsid"));
			this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@title", System.Data.SqlDbType.VarChar, 100, "title"));
			this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@content", System.Data.SqlDbType.VarChar, 2147483647, "content"));
			this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@newtime", System.Data.SqlDbType.VarChar, 50, "newtime"));
			this.sqlInsertCommand1.Parameters.Add(new System.Data.SqlClient.SqlParameter("@source", System.Data.SqlDbType.VarChar, 100, "source"));
			// 
			// sqlSelectCommand1
			// 
			this.sqlSelectCommand1.CommandText = "SELECT newsid, title, content, newtime, source FROM news";
			this.sqlSelectCommand1.Connection = this.sqlConnection1;
			// 
			// dataSet51
			// 
			this.dataSet51.DataSetName = "DataSet5";
			this.dataSet51.Locale = new System.Globalization.CultureInfo("zh-CN");
			this.Load += new System.EventHandler(this.Page_Load);
			((System.ComponentModel.ISupportInitialize)(this.dataSet51)).EndInit();

		}
		#endregion

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

		private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
		{
			if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.AlternatingItem)
			{
				((LinkButton)(e.Item.Cells[5].Controls[0])).Attributes.Add("onclick","return confirm('确认要删除吗?');");
				((LinkButton)(e.Item.Cells[6].Controls[0])).Attributes.Add("onclick","return confirm('确认要修改吗?');");
			}
		}

		private void DataGrid1_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			int newsid=Convert.ToInt32(this.DataGrid1.DataKeys[e.Item.ItemIndex].ToString());
			SqlConnection con=DB.createCon();
			SqlCommand cmd=new SqlCommand("delete from news where newsid='"+newsid+"'",con);
			con.Open();
			cmd.ExecuteNonQuery();
			this.bindData();
		}

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

		private void LinkButton1_Click(object sender, System.EventArgs e)
		{
			Response.Redirect("addnews.aspx");
		}

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

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

		private void DataGrid1_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			SqlConnection con =DB.createCon();
			con.Open ();
			int newsid= Convert.ToInt32(this.DataGrid1.DataKeys[e.Item.ItemIndex].ToString());  
			//非只读绑定列，处于编辑状态

			string title = ((TextBox)(e.Item.Cells[1].Controls[0])).Text;
			string content = ((TextBox)(e.Item.Cells[2].Controls[0])).Text;
			string newtime = ((TextBox)(e.Item.Cells[3].Controls[0])).Text;
			string asource = ((TextBox)(e.Item.Cells[4].Controls[0])).Text;	
			//			this.Response.Write(readersex);
			string strSql = "update news set title = '"+title+"',content='"+content+"',newtime='"+newtime+"',source='"+asource+"'where newsid =" +newsid ;
			//			string strSql = "update 读者信息表 set readername = '" + readername + "',readsex='"+readersex+"',readerdep='"+readerdep+"',readertype='"+readertype+"'where readerid =" + readerid;
				
			SqlCommand cmd=new SqlCommand (strSql,con);
			try
			{
				cmd.ExecuteNonQuery();
				this.Response.Write(" <script language ='javascript'> alert ('更新成功！')</script>");
				this.DataGrid1.EditItemIndex=-1;  //退出行的编辑模式
				
			}
			catch
			{
				this.Response.Write(" <script language ='javascript'> alert ('更新失败！')</script>");
			}
			this.DataGrid1.EditItemIndex=-1;
			bindData();
		}
	}
}