retrieveForm.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;

namespace MF借书系统
{
    public partial class retrieveForm : Form
    {
        public retrieveForm()
        {
            InitializeComponent();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private void button5_Click(object sender, EventArgs e)
        {
            this.Visible = false;
            new Form1().Show();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            groupBox1.Visible = false;
            groupBox2.Visible = false;
            groupBox3.Visible = false;
            if (radioButton1.Checked)
            {
                guanli_deng.Enabled = true;
                guanli_yonghuzhanghao_Text.Enabled = true;
                guanli_zhanghao_Text.Enabled = true;
                guanli_mima_Text.Enabled = true ;
                guanli_yonghuzhanghao_Text.Text= "";
                guanli_zhanghao_Text.Text = "";
                guanli_mima_Text.Text = "";
                groupBox2.Visible = true;
            }
            if (radioButton2.Checked)
            {
                yonghu_dana_Text.Enabled = false;
                yonghu_zhanghao_Text.Enabled = true;
                yonghu_wenti_Text.Text = "";
                yonghu_dana_Text.Text = "";
                yonghu_zhanghao_Text.Text = "";
                yonghu_zhaohui.Enabled = true; 
                groupBox1.Visible = true;
            }
        }

        private void button6_Click(object sender, EventArgs e)
        {
            ADO.GuanLiYuan guanLiYuan = new ADO.GuanLiYuan();