MyNewsUI/BackManager/ItemList.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using MyNewsBLL;
using MyNewsModels;

public partial class BackManager_ItemList : System.Web.UI.Page
{
    ItemManager itemManager = new ItemManager();

    protected void Page_Load(object sender, EventArgs e)
    {
        //页面初次加载时执行此操作
        if (!this.IsPostBack)
        {
            DisplayItems();
        }
    }

    private void DisplayItems()
    {
        //调用业务逻辑层方法查询所有的栏目
        List<Item> items = itemManager.GetAllItems();
        //将查询结果显示到界面
        gvItems.DataSource = items;
        gvItems.DataBind();
    }
    protected void gvItems_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        gvItems.PageIndex = e.NewPageIndex;
        DisplayItems();
    }
    protected void gvItems_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        int itemId =Convert .ToInt32 ( e.CommandArgument);
        if (e.CommandName == "ItemEdit")
        {
            Response .Redirect ("ItemEdit.aspx?itemid="+itemId) ;
        }
        else if (e.CommandName == "ItemDel")
        {
          bool flag=  itemManager.DeleteItem(itemId);
          if (flag)
          {
              DisplayItems();
          }
          else
          {
              ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('删除失败');</script>");
          }


        }
        else if (e.CommandName == "ItemDetail")
        {
            Response.Redirect("ItemDetail.aspx?itemid="+itemId );
        }