public void GV_RowDeleting(Object sender, GridViewDeleteEventArgs e)这个问题！~~

Question

        public void GV_RowCommand(Object sender, GridViewCommandEventArgs e)
        {
            int index = Convert.ToInt32(e.CommandArgument);
            int topicId = -1;
            switch (e.CommandName)
            {
                case "Update":
                    topicId = Convert.ToInt32(GV.Rows[index].Cells[0].Text);
                    Response.Redirect("TopicUpdate.aspx?topic_id=" + topicId.ToString());
                    break;
                case "Delete":
                    topicId = Convert.ToInt32(GV.Rows[index].Cells[0].Text);
                    Topic topic = new Topic();
                    topic.LoadData(topicId);
                    topic.Delete();
                    break;
                default:
                    break;
            }
            Response.Redirect("TopicList.aspx");
        }
        public void GV_RowDeleting(Object sender, GridViewDeleteEventArgs e)
        {
            string userloginnameofTopic = GV.Rows[e.RowIndex].Cells[1].Text.ToString();
            if (userloginnameofTopic == "guest" || userloginnameofTopic != Session["login_name"].ToString())
            {
                Response.Write("<script Language=javascript>alert('你无权删除!')</script>");
                e.Cancel = true;
            }
        }上面是topiclist.aspx.cs的代码
我想问就是,当我点删除时为什么没有经过权限的验证就直接把主题删除了，还有就是想问。
 public void GV_RowDeleting(Object sender, GridViewDeleteEventArgs e)
这个事件是什么时候触发的？？~？？

Answer 1

先看RowDeleting事件触发了吗.
再看一下if里边的执行了吗.单击某一行的“删除”按钮后，在 GridView 控件删除该行之前，将引发 RowDeleting 事件。这使您可以提供一个这样的事件处理方法，即每次发生此事件时执行一个自定义例程（如取消删除操作）。GridViewDeleteEventArgs 对象将被传递给事件处理方法，以便您可以确定当前行的索引，还可以指示应取消删除操作。若要取消删除操作，请将 GridViewDeleteEventArgs 对象的 Cancel 属性设置为 true。

Answer 2

没进事件或条件不成立。
GridView有一个列是可以编辑删除的，点哪个删除时候触发。

Answer 3

可是我点删除时！~~~那就
public void GV_RowCommand(Object sender, GridViewCommandEventArgs e) 
        { 
            int index = Convert.ToInt32(e.CommandArgument); 
            int topicId = -1; 
            switch (e.CommandName) 
            { 
                case "Update": 
                    topicId = Convert.ToInt32(GV.Rows[index].Cells[0].Text); 
                    Response.Redirect("TopicUpdate.aspx?topic_id=" + topicId.ToString()); 
                    break; 
                case "Delete": 
                    topicId = Convert.ToInt32(GV.Rows[index].Cells[0].Text); 
                    Topic topic = new Topic(); 
                    topic.LoadData(topicId); 
                    topic.Delete(); 
                    break; 
                default: 
                    break; 
            } 
            Response.Redirect("TopicList.aspx"); 
        } 
直接到这里了吖！~~

Answer 4

根本就没有
   public void GV_RowDeleting(Object sender, GridViewDeleteEventArgs e)
触发这个！~~而是直接去判断case了

Answer 5

<asp:GridView ID="GV" runat="server"
         AutoGenerateColumns="false"
          AllowPaging="true"
           OnPageIndexChanging="GV_PageIndexChanging"
            OnRowDeleting="GV_RowDeleting"
             PageSize="5"
              OnRowCommand="GV_RowCommand" OnRowUpdating="GV_RowUpdating" Width="635px">
              <Columns>
              <asp:BoundField
               DataField="TopicId"
                HeaderText="编号" />
                <asp:BoundField 
                DataField="loginusername"
                 HeaderText="用户" />
                 <asp:BoundField DataField="Title"  
                 HeaderText="标题"/>
                 <asp:BoundField
                 DataField="CreateTime"
                 HeaderText="发表时间" />
                 <asp:ButtonField  Text="修改" 
                 HeaderText="修改"  
                 CommandName="Update"/>
                 <asp:HyperLinkField HeaderText="详细信息" 
                  DataNavigateUrlFormatString="TopicDetail.aspx?topic_id={0}"
                 text="详细信息"  
                 DataNavigateUrlFields="TopicId" 
                 DataTextFormatString="详细信息"/>
                 <asp:ButtonField
                  Text="删除" 
                  HeaderText="删除" 
                  CommandName="Delete" />
              </Columns>这介是我的GV