BookManager/frmBookType/frmBookTypeChange.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Model;
using BLL;

namespace BookManager.frmBookType
{
    public partial class frmBookTypeChange : Form
    {
        private BookType bookType;
        private DataTable dtType;
        public frmBookTypeChange()
        {
            InitializeComponent();
        }
        public frmBookTypeChange(BookType bookType,DataTable dtType)
        {
            this.bookType = bookType;
            this.dtType = dtType;
            InitializeComponent();
        }
        
        private void frmBookTypeChange_Load(object sender, EventArgs e)
        {
            txtTypeId.Text = bookType.BookTypeId;
            txtTypeId.Enabled = false;
            txtTypeName.Text = bookType.BookTypeName;
        }

        private void btnAdd_Click(object sender, EventArgs e)
        {
            BookType bookType = new BookType ();
            bookType.BookTypeId = txtTypeId.Text;
            bookType.BookTypeName = txtTypeName.Text;
            BookTypeBLL bookTypeBLL = new BookTypeBLL ();
            try{
                DialogResult result = MessageBox.Show("确认信息修改吗？", "类别信息修改", MessageBoxButtons.YesNo);
                if (DialogResult.Yes == result)
                {
                    //提取要修改的表中的一行
                    DataRow dr = dtType.Rows.Find(bookType.BookTypeId);
                    dr["bookTypeName"] = bookType.BookTypeName;
                    if (bookTypeBLL.BookTypeChange(bookType))
                    {
                        MessageBox.Show("修改类别信息成功！", "修改类别");
                        this.Dispose();
                    }
                    else
                    {
                        MessageBox.Show("修改类别信息失败！", "修改类别");
                    }
                }
            }catch(Exception ex){
                MessageBox.Show(ex.Message);