当前文件路径：myBBS/TopicList.aspx.cs

		            
  1using System;
  2using System.Collections;
  3using System.ComponentModel;
  4using System.Data;
  5using System.Drawing;
  6using System.Web;
  7using System.Web.SessionState;
  8using System.Web.UI;
  9using System.Web.UI.WebControls;
 10using System.Web.UI.HtmlControls;
 11
 12using MyBBS.BusinessLogicLayer;
 13
 14namespace MyBBS.Web
 15...{
 16    /**//// <summary>
 17    /// TopicList 的摘要说明。
 18    /// </summary>
 19    public partial class TopicList : System.Web.UI.Page
 20    ...{
 21        /**//// <summary>
 22        /// 页面加载事件
 23        /// </summary>
 24        /// <param name="sender"></param>
 25        /// <param name="e"></param>
 26        protected void Page_Load(object sender, System.EventArgs e)
 27        ...{
 28            if (!CheckUser())
 29                Response.Redirect("Login.aspx");
 30
 31            InitData();
 32        }
 33
 34        Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码
 35        override protected void OnInit(EventArgs e)
 36        ...{
 37            //
 38            // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
 39            //
 40            InitializeComponent();
 41            base.OnInit(e);
 42        }
 43
 44        /**//// <summary>
 45        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
 46        /// 此方法的内容。
 47        /// </summary>
 48        private void InitializeComponent()
 49        ...{
 50        }
 51        #endregion
 52
 53        /**//// <summary>
 54        /// 验证用户身份
 55        /// </summary>
 56        /// <returns></returns>
 57        private bool CheckUser()
 58        ...{
 59            if (Session["login_name"] == null)
 60            ...{
 61                Response.Write("<Script Language=JavaScript>alert('请登录！');</Script>");
 62                return false;
 63            }
 64            return true;
 65        }
 66
 67        /**//// <summary>
 68        /// 按时间降序，读取帖子数据
 69        /// </summary>
 70        private void InitData()
 71        ...{
 72            DataSet ds = Topic.QueryTopics();
 73            GV.DataSource = ds;
 74            GV.DataBind();
 75            LabelPages.Text = "查询结果（第" + (GV.PageIndex + 1).ToString() + "页 共" + GV.PageCount.ToString() + "页）";
 76        }
 77
 78        /**//// <summary>
 79        /// 按钮列单击事件
 80        /// </summary>
 81        /// <param name="sender"></param>
 82        /// <param name="e"></param>
 83        protected void GV_RowCommand(object sender, GridViewCommandEventArgs e)
 84        ...{
 85            int index = Convert.ToInt32(e.CommandArgument); //待处理的行下标
 86            int topicId = -1;
 87            
 88            switch (e.CommandName)
 89            ...{
 90                //修改
 91                case "Update":
 92                    topicId = Convert.ToInt32(GV.Rows[index].Cells[0].Text);
 93                    Response.Redirect("TopicUpdate.aspx?topic_id=" + topicId);
 94                    break;
 95
 96                //删除
 97                case "Delete":
 98                    topicId = Convert.ToInt32(GV.Rows[index].Cells[0].Text);
 99                    Topic topic = new Topic();
100                    topic.LoadData(topicId);
101                    topic.Delete();
102                    break;
103
104                default:
105                    break;
106            }
107        }
108
109        /**//// <summary>
110        /// 翻页事件
111        /// </summary>
112        /// <param name="sender"></param>
113        /// <param name="e"></param>
114        protected void GV_PageIndexChanging(object sender, GridViewPageEventArgs e)
115        ...{
116            GV.PageIndex = e.NewPageIndex;
117            InitData();
118        }
119
120        /**//// <summary>
121        /// 删除前事件，检测用户是否有删除该数据的权限
122        /// </summary>
123        /// <param name="sender"></param>
124        /// <param name="e"></param>
125        protected void GV_RowDeleting(object sender, GridViewDeleteEventArgs e)
126        ...{
127            string userLoginNameOfTopic = GV.Rows[e.RowIndex].Cells[1].Text.ToString(); //UserLoginName
128            if (userLoginNameOfTopic == "guest" || userLoginNameOfTopic != Session["login_name"].ToString())
129            ...{
130                Response.Write("<Script Language=JavaScript>alert('您无权删除！');</Script>");
131                e.Cancel = true;
132            }
133        }
134
135        /**//// <summary>
136        /// 修改前事件，检测用户是否有修改该数据的权限
137        /// </summary>
138        /// <param name="sender"></param>
139        /// <param name="e"></param>
140        protected void GV_RowUpdating(object sender, GridViewUpdateEventArgs e)
141        ...{
142            string userLoginNameOfTopic = GV.Rows[e.RowIndex].Cells[1].Text.ToString();
143            if (userLoginNameOfTopic == "guest" || userLoginNameOfTopic != Session["login_name"].ToString())
144            ...{
145                Response.Write("<Script Language=JavaScript>alert('您无权修改！');</Script>");
146                e.Cancel = true;
147            }
148        }
149    }
150}