C#操作access数据库 增加、删除、修改、查询(入门级源码)

using System;using System.Windows.Forms;namespace My_Plan{ public partial class ssss_Main : Form { public ssss_Main() { InitializeComponent(); } private void choose1() { MessageBoxButtons messButton = MessageBoxButtons.OKCancel; DialogResult dr = MessageBox.Show("小伙子三年时间还没到呢,到时间了再来找我吧,难道是提前转正了？", "", messButton); if (dr == DialogResult.OK)//如果点击“确定”按钮 { MessageBoxButtons messButton1 = MessageBoxButtons.OKCancel; DialogResult dr2 = MessageBox.Show("恭喜恭喜，那么目前有没有跳槽的打算呢？", "", messButton1); if (dr2 == DialogResult.OK)//如果点击“确定”按钮 { MessageBox.Show("好吧,遵从自己的抉择,看准了再跳！"); } else { MessageBox.Show("那么就继续在AutoDesk好好做下去吧！"); } } else { MessageBoxButtons messButton1 = MessageBoxButtons.OKCancel; DialogResult dr2 = MessageBox.Show("那么继续等待，那么目前有没有跳槽的打算呢？", "", messButton1); if (dr2 == DialogResult.OK)//如果点击“确定”按钮 { MessageBox.Show("好吧,遵从自己的抉择,看准了再跳！"); } else { MessageBox.Show("三年时间到了再来找我抉择吧！"); } } } private void choose2() { MessageBoxButtons messButton = MessageBoxButtons.OKCancel; DialogResult dr = MessageBox.Show("三年时间到了,现在转入Autodesk正式员工编制了吗？", "", messButton); if (dr == DialogResult.OK)//如果点击“确定”按钮 { MessageBoxButtons messButton1 = MessageBoxButtons.OKCancel; DialogResult dr2 = MessageBox.Show("恭喜恭喜，尽管转正了但现在有没有跳槽的打算呢？", "", messButton1); if (dr2 == DialogResult.OK)//如果点击“确定”按钮 { MessageBox.Show("相信自己,看准了再跳！"); } else { MessageBox.Show("嗯,就在AutoDesk好好做下去吧！"); } } else { MessageBoxButtons messButton1 = MessageBoxButtons.OKCancel; DialogResult dr2 = MessageBox.Show("真坑啊,三年了都没转正,那么目前有没有跳槽的打算呢？", "", messButton1); if (dr2 == DialogResult.OK)//如果点击“确定”按钮 { MessageBox.Show("好吧,这几年也收获不少了,看准了再跳！"); } else { MessageBox.Show("那就继续等待转正机会吧！"); } } } private void Frm_Main_Load(object sender, EventArgs e) { //判断时间的小函数 DateTime oldDate = new DateTime(2015, 8, 24); DateTime newDate = DateTime.Now; // Difference in days, hours, and minutes. TimeSpan ts = newDate - oldDate; // Difference in days. int differenceInDays = ts.Days; label2.Text = "我已经在Autodesk已经工作了"; label1.Text = differenceInDays.ToString() ; label4.Text = "个风风雨雨的日子"; label3.Text = "当前时间：" DateTime.Now.ToString(); if( differenceInDays < 109){ //1096为3年的天数 choose1(); } else { MessageBox.Show("三年时间到了,进行进一步的抉择吧！"); choose2(); } } private void button1_Click(object sender, EventArgs e) { this.Close(); ssss2 frm = new ssss2(); frm.Show(); } }}