C#备份，还原数据库

 1     private void btnBack_Click(object sender, EventArgs e)
 2      {
 3          string saveAway = @"C:1.bak";
 4          //            string cmdText = @"backup database " + System.Configuration.ConfigurationSettings.AppSettings["dbName"] + " to disk='" + saveAway + "'";
 5          string cmdText = @"backup database TestDemo to disk='" + saveAway + "'";
 6          BakReductSql(cmdText, true);
 7      }
 8  
 9      private void btnRestore_Click(object sender, EventArgs e)  //恢复
10      {
11          // string openAway = this.tbxReductLoad.Text.ToString().Trim();//读取文件的路径
12          string openAway = @"c:1.bak";//读取文件的路径
13          //string cmdText = @"restore database " + System.Configuration.ConfigurationSettings.AppSettings["dbName"] + " from disk='" + openAway + "'";
14          string cmdText = @"restore database TestDemo from disk='" + openAway + "' with REPLACE;";
15          BakReductSql(cmdText, false);
16      }
17      /// <summary>
18      /// 对数据库的备份和恢复操作，Sql语句实现
19      /// </summary>
20      /// <param name="cmdText">实现备份或恢复的Sql语句</param>
21      /// <param name="isBak">该操作是否为备份操作，是为true否，为false</param>
22      private void BakReductSql(string cmdText, bool isBak)
23      {
24          SqlCommand cmdBakRst = new SqlCommand();
25          SqlConnection conn = new SqlConnection("Data Source=.;Initial Catalog=master;uid=sa;pwd=sa;");
26          try
27          {
28              conn.Open();
29              cmdBakRst.Connection = conn;
30              cmdBakRst.CommandType = CommandType.Text;
31              if (!isBak)     //如果是恢复操作
32              {
33                  string setOffline = "Alter database TestDemo Set Offline With rollback immediate ;";
34                  string setOnline = " Alter database TestDemo Set Online With Rollback immediate;";
35                  cmdBakRst.CommandText = setOffline + cmdText + setOnline;
36              }
37              else
38              {
39                  cmdBakRst.CommandText = cmdText;
40              }
41              cmdBakRst.ExecuteNonQuery();
42              if (!isBak)
43              {
44                  MessageBox.Show("恭喜你，数据成功恢复为所选文档的状态！", "系统消息");
45              }
46              else
47              {
48                  MessageBox.Show("恭喜，你已经成功备份当前数据！", "系统消息");
49              }
50          }
51          catch (SqlException sexc)
52          {
53              MessageBox.Show("失败，可能是对数据库操作失败，原因：" + sexc, "数据库错误消息");
54          }
55          catch (Exception ex)
56          {
57              MessageBox.Show("对不起，操作失败，可能原因：" + ex, "系统消息");
58          }
59          finally
60          {
61              cmdBakRst.Dispose();
62              conn.Close();
63              conn.Dispose();
64          }
65      }