bookmodify.aspx.cs

来自「这是一个很好的图书管理系统 数据库SQL2005」· CS 代码 · 共 78 行

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class BookModify : System.Web.UI.Page
{
    BLL.T_Book book = new BLL.T_Book();

    protected void Page_Load(object sender, EventArgs e)
    {

        try
        {
            //验证Session对象，判断用户是否登陆
            if (Session["UserID"].ToString() == "" || Session["UserID"].ToString() == null || Session["Level"].ToString() != "1")
            {
                Response.Redirect("Login.aspx");
                return;
            }
        }
        //Session对象未初始化，跳转登陆页面。
        catch (NullReferenceException)
        {
            Response.Redirect("Login.aspx");
        }
        if (!IsPostBack)
        {
            string id = "";
            try
            {
                id = Request.QueryString["BookID"].ToString();
            }
            catch (NullReferenceException)
            {
                Response.Redirect("Login.aspx");
            }
            PublicClass.BookModel Book = new PublicClass.BookModel();
            Book.BookID = int.Parse(id);
            book.Book = Book;
            //获取图书信息
            book.SelectBookID();
            //显示给用户
            lblBooKID.Text = Book.BookID.ToString();
            lblManID.Text = Book.ManID;
            txtBookName.Text = Book.BookName;
            txtWriter.Text = Book.Writer;
        }
    }

    protected void btn_Update_Click(object sender, EventArgs e)
    {
        PublicClass.BookModel Book = new PublicClass.BookModel();
        Book.BookID = int.Parse(lblBooKID.Text);
        Book.ManID = lblManID.Text;
        Book.BookName = txtBookName.Text;
        Book.Writer = txtWriter.Text;
        book.Book = Book;
        //更新
        int re = book.UpdateBook();
        switch (re)
        {
            case 1:
                Response.Redirect("BookMan.aspx");
                break;
            case 0:
                this.ClientScript.RegisterStartupScript(GetType(), "", "<script>alert('修改失败')</script>");
                break;
        }
    }
}