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 MyBookShop.BusinessLogicLayer;
 13using MyBookShop.BusinessLogicHelper;
 14
 15namespace MyBookShop.Web
 16...{
 17    /**//// <summary>
 18    /// BookAdd 的摘要说明。
 19    /// </summary>
 20    public partial class BookAdd : System.Web.UI.Page
 21    ...{
 22    
 23        protected void Page_Load(object sender, System.EventArgs e)
 24        ...{
 25            if(!IsPostBack)
 26            ...{
 27                InitData();
 28                //InputPictureFile.Accept="image/*";
 29            }
 30        }
 31
 32        private void InitData()
 33        ...{
 34            //初始化：类别下拉框中的数据，用Category表中的数据进行绑定
 35            DataTable dt= Category.Query(new Hashtable());
 36            foreach(DataRow dr in dt.Rows)
 37            ...{
 38                DropDownListCategory.Items.Add(new ListItem(dr["CategoryName"].ToString(),dr["CategoryId"].ToString()));
 39            }
 40        }
 41
 42        /**//// <summary>
 43        /// 提交按钮单击事件
 44        /// </summary>
 45        /// <param name="sender"></param>
 46        /// <param name="e"></param>
 47        protected void ButtonOK_Click(object sender, System.EventArgs e)
 48        ...{
 49            //构造book信息哈希表
 50            Hashtable ht=new Hashtable();
 51            ht.Add("BookName",TextBoxBookName.Text.Trim());
 52            ht.Add("CategoryId",DropDownListCategory.SelectedValue);
 53            ht.Add("Price",TextBoxPrice.Text.Trim());
 54            ht.Add("Publisher",TextBoxPublisher.Text.Trim());
 55            ht.Add("PublishDate",TextBoxPublishDate.Text.Trim());
 56            ht.Add("Author",TextBoxAuthor.Text.Trim());
 57            ht.Add("PageNum",TextBoxPageNum.Text.Trim());
 58            ht.Add("Description",TextBoxDescription.Text.Trim());
 59            
 60            //图片名,以当前时间为文件名,确保文件名没有重复
 61            string uploadName=InputPictureFile.Value.Trim();
 62            string pictureName="";
 63            if(uploadName!="")
 64            ...{
 65                int idx=uploadName.LastIndexOf(".");
 66                string suffix=uploadName.Substring(idx);//文件后缀
 67                //Ticks属性的值为自 0001 年 1 月 1 日午夜 12:00 以来所经过时间以 100 毫微秒为间隔表示时的数字。
 68                pictureName=System.DateTime.Now.Ticks.ToString()+suffix;
 69                ht.Add("PictureUrl",pictureName);
 70            }
 71
 72            ht.Add("SaleCount",1);
 73            
 74            //添加图书,如果数据类型不正确,给出提示.
 75            ArrayList WarningMessageList=new ArrayList();
 76            LabelWarningMessage.Text="";
 77            if(BookHelper.Add(ht,ref WarningMessageList)==false)
 78            ...{
 79                LabelWarningMessage.Text="<font color=red>";
 80                foreach(string item in WarningMessageList)
 81                ...{
 82                    LabelWarningMessage.Text+=item+"<br>";
 83                }
 84                LabelWarningMessage.Text+="</font>";
 85            }
 86            
 87            //上传图片到目录"\BookPics\"中
 88            else
 89            ...{
 90                if(uploadName!="")
 91                ...{
 92                    string path=Server.MapPath(".\\BookPics\\");
 93                    InputPictureFile.PostedFile.SaveAs(path+pictureName);
 94                }
 95                Response.Redirect("BookList.aspx");
 96            }
 97            
 98        }
 99    }
100}
101