admin_articleedit.aspx.cs

非常完整的新闻发布系统

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;
using System.Configuration;
namespace WebNews.admin
{
	/// <summary>
	/// admin_articleEdit 的摘要说明。
	/// </summary>
	public class admin_articleEdit : System.Web.UI.Page
	{
		protected System.Data.SqlClient.SqlConnection SqlConnection1;		//添加数据库的操作对象
		protected System.Data.SqlClient.SqlDataAdapter SqlDataAdapter1;
		protected System.Data.DataSet DataSet1;
		protected System.Data.SqlClient.SqlCommand SqlCommand1;
		protected System.Data.SqlClient.SqlDataReader SqlDataReader1;	

		protected System.Web.UI.WebControls.Label myLabel;
		protected System.Web.UI.WebControls.DropDownList ClassName;
		protected System.Web.UI.WebControls.RequiredFieldValidator Requiredfieldvalidator2;
		protected System.Web.UI.WebControls.RequiredFieldValidator Requiredfieldvalidator3;
		protected System.Web.UI.WebControls.CheckBox Headline;
		protected System.Web.UI.WebControls.CheckBox HighLight;
		protected System.Web.UI.WebControls.CustomValidator CustomValidator1;
		protected System.Web.UI.WebControls.Button Submit;
		protected System.Web.UI.HtmlControls.HtmlTextArea Summary;
		protected System.Web.UI.WebControls.TextBox Source;
		protected System.Web.UI.WebControls.TextBox Author;
		protected System.Web.UI.WebControls.TextBox Key;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator1;
		protected FreeTextBoxControls.FreeTextBox FreeTextBox1;
		protected System.Web.UI.WebControls.TextBox Title;
	
		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)
			{
				getArticle();			  
				if((string)Session["userclass"]!="系统管理员"&&(int)Session["chgnews"]!=1)
				{
					Page.Visible=false;
				}
			}

		}		

		private void getArticle()
		{
			SqlConnection1 = new SqlConnection(ConfigurationSettings.AppSettings["dsn"]);//连接字符串,建立连接
			SqlCommand1=new SqlCommand("sp_selArticleById",SqlConnection1); 
			SqlCommand1.CommandType=CommandType.StoredProcedure;
			SqlCommand1.Parameters.Add(new SqlParameter("@articleid",SqlDbType.BigInt));
			SqlCommand1.Parameters["@articleid"].Value =Request["articleid"];   
			try
			{
				SqlConnection1.Open();
				SqlDataReader1=SqlCommand1.ExecuteReader();										
			}
			catch (SqlException e1)
			{
				myLabel.Text ="数据库操作错误："+e1.Message;
			}
			if(SqlDataReader1.Read()==true)   //如果改变了用户名,就要检查是否与已有的记录相同
			{
				FreeTextBox1.Text=SqlDataReader1["content"].ToString();		//取得内容 
				Title.Text=	SqlDataReader1["title"].ToString();				//标题
				int hl=(int)SqlDataReader1["headline"];				//是否头条新闻
				if(hl==1)
				{
					Headline.Checked=true;
				}
				int ht=(int)SqlDataReader1["highlight"];		   //是否高显
				if(ht==1)
				{
					HighLight.Checked=true;
				}
				Summary.Value = SqlDataReader1["summary"].ToString();			//简写
				Key.Text = SqlDataReader1["Nkey"].ToString();					//相关新闻
				Author.Text = SqlDataReader1["writer"].ToString(); //作者
				Source.Text = SqlDataReader1["source"].ToString();//来源
			}
			SqlDataReader1.Close();
			SqlConnection1.Close();

			string  da=(string)Session["userclass"]	;			  //根据管理权限来显示分类
			string  classname0=(string)Session["classname"];
			if(da.Trim()=="系统管理员")
			{
				SqlDataAdapter1 = new SqlDataAdapter();
				SqlDataAdapter1.SelectCommand=new SqlCommand("sp_selFclassAll",SqlConnection1);
				SqlDataAdapter1.SelectCommand.CommandType=CommandType.StoredProcedure ;
				DataSet1=new DataSet();		
				try
				{
					SqlDataAdapter1.Fill(DataSet1,"ClassName");
				}
				catch (SqlException e1)
				{
					myLabel.Text ="数据库操作错误："+e1.Message;				
				}
				ClassName.DataSource=DataSet1;
				ClassName.DataTextField="classname";
				ClassName.DataValueField="classname";
				ClassName.DataBind(); 
				int i = 0;
				foreach(ListItem li in ClassName.Items)					 //选中分类名
				{
					if(li.Text.Trim() ==classname0.Trim())
					{
						li.Selected = true; 				
					}
					i += 1;
				}
				SqlConnection1.Close();
			}
			else	//不是系统管理员,只能管理一个新闻分类
			{
				ListItem d=new ListItem(classname0,classname0);				
				ClassName.Items.Add(d);
			}
		}

		#region Web Form Designer generated code
		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.Submit.Click += new System.EventHandler(this.Submit_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Submit_Click(object sender, System.EventArgs e)
		{
			
			if(Page.IsValid)
			{
				int hl=0;
				int HL=0;				
				if(Headline.Checked)								 //获得是否是头条新闻
				{
					hl=1;
				}
				else  
				{
					hl=0;
				}
				if(HighLight.Checked)							  //获得是否新闻醒目
				{
					HL=1;
				}
				else
				{
					HL=0;
				}
				SqlConnection1 = new SqlConnection(ConfigurationSettings.AppSettings["dsn"]); //取连接字符串,并建立连接
				SqlCommand1=new SqlCommand("sp_updateArticle",SqlConnection1);	
				SqlCommand1.CommandType = CommandType.StoredProcedure;
				SqlCommand1.Parameters.Add(new SqlParameter("@articleid",SqlDbType.BigInt));	//调用并设置存储过程参数
				SqlCommand1.Parameters["@articleid"].Value = Request["articleid"];	
				SqlCommand1.Parameters.Add(new SqlParameter("@content",SqlDbType.NText));	
				SqlCommand1.Parameters["@content"].Value =FreeTextBox1.Text;	//获得新闻内容
				SqlCommand1.Parameters.Add(new SqlParameter("@title",SqlDbType.NVarChar,500));			
				SqlCommand1.Parameters["@title"].Value =Title.Text;	   		//获得新闻标题
				SqlCommand1.Parameters.Add(new SqlParameter("@classname",SqlDbType.Char,200));			
				SqlCommand1.Parameters["@classname"].Value = ClassName.SelectedItem.Text ;		 //获得分类名		
				SqlCommand1.Parameters.Add(new SqlParameter("@headline",SqlDbType.Int));			
				SqlCommand1.Parameters["@headline"].Value =hl;
				SqlCommand1.Parameters.Add(new SqlParameter("@highlight",SqlDbType.Int));			
				SqlCommand1.Parameters["@highlight"].Value =HL;	
				SqlCommand1.Parameters.Add(new SqlParameter("@summary",SqlDbType.Char,400));			
				SqlCommand1.Parameters["@summary"].Value =Summary.Value.Trim();					 //获得新闻简介
				SqlCommand1.Parameters.Add(new SqlParameter("@Nkey",SqlDbType.Char,400));			
				SqlCommand1.Parameters["@Nkey"].Value =Key.Text;					     //获得相关新闻		
				SqlCommand1.Parameters.Add(new SqlParameter("@writer",SqlDbType.Char,100));			
				SqlCommand1.Parameters["@writer"].Value =Author.Text ;						 //获得作者名
				SqlCommand1.Parameters.Add(new SqlParameter("@source",SqlDbType.Char,100));			
				SqlCommand1.Parameters["@source"].Value = Source.Text;				
				try
				{
					SqlConnection1.Open();
					int d = SqlCommand1.ExecuteNonQuery();
					if(d>0)
					{
						myLabel.Text="修改新闻成功";
					}
					else 
					{
						myLabel.Text="修改新闻成功";
					}						
				}
				catch (SqlException e1)
				{
					myLabel.Text ="数据库操作错误："+e1.Message;
				}
				SqlConnection1.Close();
			}
		}	
	}
}