ASP.NET中使用代码来进行备份和还原数据库

 SQL代码：

 

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-- 备份数据库 backup database db_CSManage to disk='c:\backup.bak' -- 还原数据库，必须先备份该数据库的日志文件到原先的备份文件中 backup log db_CSManage to disk='c:\backup.bak' restore database db_CSManage from disk='c:\backup.bak'

 

 

其中db_CSManage是数据库名称，disk后的路径即是备份文件存储的路径。
知道了SQL语句，那么在.NET代码中就容易多了，备份的.NET代码如下：

C#代码-备份： 

 

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try {     if (txtPath.Text != "" && txtName122.Text != "")     {         getSqlConnection geCon = new getSqlConnection();         SqlConnection con = geCon.GetCon();           string strBacl = "backup database db_CSManage to disk='" + txtPath.Text.Trim() + "\\" + txtName.Text.Trim() + ".bak'";         SqlCommand Cmd = new SqlCommand(strBacl, con);         if (Cmd.ExecuteNonQuery() != 0)         {             MessageBox.Show("数据备份成功！", "提示框", MessageBoxButtons.OK, MessageBoxIcon.Information);             this.Close();         }         else         {             MessageBox.Show("数据备份失败！", "提示框", MessageBoxButtons.OK, MessageBoxIcon.Information);         }       }     else     {         MessageBox.Show("请填写备份的正确位置及文件名！", "提示框", MessageBoxButtons.OK, MessageBoxIcon.Information);       }// end } catch (Exception ee) {     MessageBox.Show(ee.Message.ToString()); }

 

 

 

以下是还原数据库的代码，在示例中发现开头得先删除与该数据库相关的进程，然后在还原之前得先把数据库日志备份到开始的备份文件中，然后才还原备份文件，要不然会出错的，代码如下：  

C#代码-还原： 

 

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if (textPaht.Text != "") {     getSqlConnection geCon = new getSqlConnection();     SqlConnection con = geCon.GetCon();     if (con.State == ConnectionState.Open)     {         con.Close();     }     string DateStr = "Data Source=niunan\\sqlexpress;Database=master;User id=sa;PWD=123456";     SqlConnection conn = new SqlConnection(DateStr);     conn.Open();       //-------------------杀掉所有连接 db_CSManage 数据库的进程--------------     string strSQL = "select spid from master..sysprocesses where dbid=db_id( 'db_CSManage') ";     SqlDataAdapter Da = new SqlDataAdapter(strSQL, conn);       DataTable spidTable = new DataTable();     Da.Fill(spidTable);       SqlCommand Cmd = new SqlCommand();     Cmd.CommandType = CommandType.Text;     Cmd.Connection = conn;       for (int iRow = 0; iRow <= spidTable.Rows.Count - 1; iRow++)     {         Cmd.CommandText = "kill " + spidTable.Rows[iRow][0].ToString();   //强行关闭用户进程         Cmd.ExecuteNonQuery();     }     conn.Close();     conn.Dispose();     //--------------------------------------------------------------------       SqlConnection sqlcon = new SqlConnection(DateStr);     sqlcon.Open();     string sql = "backup log db_CSManage to disk='" + textPaht.Text.Trim() + "' restore database db_CSManage from disk='" + textPaht.Text.Trim() + "'";     SqlCommand sqlCmd = new SqlCommand(sql, sqlcon);     sqlCmd.ExecuteNonQuery();     sqlCmd.Dispose();     sqlcon.Close();     sqlcon.Dispose();     MessageBox.Show("数据还原成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);     MessageBox.Show("为了必免数据丢失，在数据库还原后将关闭整个系统。");     Application.Exit(); } else {     MessageBox.Show("请选择备份文件！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }