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SET autocommit=0是关闭自动提交SET autocommit=1是开启自动提交，默认是开启的如果没有关闭自动提交话，写事务的时候，会出现如下问题，例如有三个insert 语句，前两条没有问题，第三条出现问题话，那么前两条提交成功了，第三条失败，往往我们不希望这样。如果关闭自动提交的话，... 阅读全文
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using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Data;using System.Data.SqlClient;using System.Configuration;namespace DAL{ public class DBHelper { private static SqlConnection con; private static string conString = ConfigurationManag... 阅读全文
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public static void ExportToExcel(ListView pListView) { if (pListView.Items == null) return; string saveFileName = ""; SaveFileDialog saveDialog = new SaveFileDialog(); saveDialog.DefaultExt = "xls"; saveDialog.Filter = "Excel文件|*.xls"; ... 阅读全文
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private void button1_Click(object sender, EventArgs e) { //选择要备份的路径 this.folderBrowserDialog1.ShowDialog(); this.txtDbBackup.Text = folderBrowserDialog1.SelectedPath; } private void btnChooseOK_Click(object sender, EventArgs e) { ... 阅读全文