GengGaiMiMaForm.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 GengGaiMiMaForm : Form
    {
        public GengGaiMiMaForm()
        {
            InitializeComponent();
        }

        private void GengGaiMiMaForm_Load(object sender, EventArgs e)
        {
            YonghuMing.Text = Form1.YONG_HU_MING;
            jiumima.Focus();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            jiumima.Text = "";
            xinmima1.Text = "";
            xinmima2.Text = "";
            jiumima.Focus();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (jiumima.Text == "")
            {
                MessageBox.Show("填写的旧密码不能为空!");
                jiumima.Focus();
                return;
            }
            if (xinmima1.Text == "")
            {
                MessageBox.Show("填写的新密码1不能为空!");
                xinmima1.Focus();
                return;
            }
            if (xinmima2.Text == "")
            {
                MessageBox.Show("填写的新密码2不能为空!");
                xinmima2.Focus();
                return;
            }
            if (!(xinmima1.Text == xinmima2.Text))
            {
                MessageBox.Show("输入的两次新密码不一致.\n\n请重新输入新密码!");