blacklist.aspx.cs

1。使用ASP.NET+C# VS.NET 2003制作

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;

namespace doughty_BBS
{
	/// <summary>
	/// blacklist 的摘要说明。
	/// </summary>
	public class blacklist : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Label Lblmsg;
		protected System.Web.UI.WebControls.DataGrid DG_Blacklist;
		protected System.Web.UI.WebControls.TextBox TB_Name;
		protected System.Web.UI.WebControls.Panel Panel1;
	
		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 ((Session["UserGrade"]==null)||(Session["UserGrade"].ToString()!="管理员"))
			{
				this.Response.Redirect("PleaseLog.aspx");
			}

			this.DG_Blacklist.DataSource=DBOperateSite.SelectFormSite("SELECT * FROM Users WHERE (User_Grade = 99)");
			this.Page.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.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.DG_Blacklist.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DG_Blacklist_DeleteCommand);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void DG_Blacklist_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			try
			{
				DBOperateSite.ExcSQL("UPDATE Users SET User_Grade = 8 WHERE (PKID = "+DG_Blacklist.DataKeys[(int)e.Item.ItemIndex]+")");
			}
			catch
			{
				Lblmsg.Text="解除黑名单失败．";
			}
			this.Response.Redirect(this.Request.Url.ToString());
		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			try
			{
				DBOperateSite.ExcSQL("UPDATE Users SET User_Grade = 99 WHERE (User_Name = '"+TB_Name.Text+"')");
			}
			catch
			{
				Lblmsg.Text="加入黑名单失败．";
			}
			this.Response.Redirect(this.Request.Url.ToString());		
		}
	}
}