BookM/AddReviseform/AmendPage.cs

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using BLL;
using Model;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Forms;
using Utils;

namespace BookM
{
    public partial class AmendPage : Form
    {
        private string bookid;
        private int id;
        public AmendPage(string bookidID, int ID)
        {
            bookid = bookidID;
            id = ID;
            InitializeComponent();
        }
        public AmendPage()
        {
            InitializeComponent();
        }

        BookManagementBLL bookManagementBLL = new BookManagementBLL();

        /// <summary>
        /// 窗体加载时
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void AmendPage_Load(object sender, EventArgs e)
        {
            //赋值输入框
            UpdateBook();
        }

        /// <summary>
        /// 根据图书id查询数据并绑定输入框
        /// </summary>
        private void UpdateBook()
        {
            //赋值给下输入框
            DataTable dt = bookManagementBLL.getBookbyid(bookid);
            txb_BookID.Text = dt.Rows[0]["图书id"].ToString();
            txb_Name.Text = dt.Rows[0]["图书名称"].ToString();
            txb_Author.Text = dt.Rows[0]["作者"].ToString();
            txb_Money.Text = dt.Rows[0]["价格"].ToString();
            //下拉框
            cb_CategoryType.DisplayMember = "CategoryName";
            cb_CategoryType.ValueMember = "ID";
            cb_CategoryType.DataSource = bookManagementBLL.FindCategory();
        }