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ASP.NET恢复备份Sql server

程序员文章站 2022-04-16 19:46:15
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前台代码:

  C#" AutoEventWireup="true" CodeBehind="SqlDbMgmt.x.cs" Inherits="SysSourceMgmt.SqlDbMgmt" %>

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  操 作 数 据 库

  

  

  

  

  

  

  备份名称和位置

  

  

  

  (如D:beifen)

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  操 作 数 据 库

  

  

  

  

  

  操 作 数 据 库

  

  

  

  

  

  

  

  

  

  

  

   后台:

  using System;

  using System.Collections.Generic;

  using System.Linq;

  using System.Web;

  using System.Web.UI;

  using System.Web.UI.WebControls;

  using System.Data.SqlClient;

  using System.IO;

  using System.Data;

  using System.Diagnostics;

  namespace SysSourceMgmt

  {

  public partial class SqlDbMgmt : System.Web.UI.Page

  {

  protected void Page_Load(object sender, EventArgs e)

  {

  if (!IsPostBack)

  {

  try

  {

  string SqlStr1 = "Server=(local);DataBase=master;Uid=sa;Pwd=";

  string SqlStr2 = "Exec sp_helpdb";

  SqlConnection con = new SqlConnection(SqlStr1);

  con.Open();

  SqlCommand com = new SqlCommand(SqlStr2, con);

  SqlDataReader dr = com.ExecuteReader();

  this.DropDownList1.DataSource = dr;

  this.DropDownList1.DataTextField = "name";

  this.DropDownList1.DataBind();

  dr.Close();

  con.Close();

  SqlStr1 = "Server=(local);DataBase=master;Uid=sa;Pwd=";

  SqlStr2 = "Exec sp_helpdb";

  con = new SqlConnection(SqlStr1);

  con.Open();

  com = new SqlCommand(SqlStr2, con);

  dr = com.ExecuteReader();

  this.DropDownList1.DataSource = dr;

  this.DropDownList1.DataTextField = "name";

  this.DropDownList1.DataBind();

  dr.Close();

  con.Close();

  }

  catch (Exception)

  {

  }

  }

  }

  protected void Button1_Click(object sender, EventArgs e)

  {

  string dbName = string.Empty;

  if (DropDownList1.Items.Count != 0)

  {

  dbName = DropDownList1.SelectedValue.Trim();

  }

  else

  {

  dbName = txtDbName.Text.Trim();

  }

  string SqlStr1 = "Data Source=.\sqlexpress;Initial Catalog='" + dbName + "';Integrated Security=True";

  string SqlStr2 = "backup database " + dbName + " to disk='" + this.TextBox1.Text.Trim() + ".bak'";

  SqlConnection con = new SqlConnection(SqlStr1);

  con.Open();

  try

  {

  if (File.Exists(this.TextBox1.Text.Trim()))

  {

  Response.Write("");

  return;

  }

  SqlCommand com = new SqlCommand(SqlStr2, con);

  com.ExecuteNonQuery();

  Response.Write("");

  }

  catch (Exception error)

  {

  Response.Write(error.Message);

  Response.Write("");

  }

  finally

  {

  con.Close();

  }

  }

  protected void Button2_Click(object sender, EventArgs e)

  {

  string path = this.FileUpload1.PostedFile.FileName; //获得备份路径及数据库名称

  string dbName = string.Empty;

  if (DropDownList1.Items.Count != 0)

  {

  dbName = DropDownList1.SelectedValue.Trim();

  }

 else

  {

  dbName = txtDbName.Text.Trim();

  }

   string SqlStr1 = "Data Source=.\sqlexpress;Initial Catalog='" + dbName + "';Integrated Security=True";

  string SqlStr2 = @"use master restore database " + dbName + " from disk='" + path + "'";

  SqlConnection con = new SqlConnection(SqlStr1);

  con.Open();

  try

  {

  SqlCommand com = new SqlCommand(SqlStr2, con);

  com.ExecuteNonQuery();

  Response.Write("");

  }

  catch (Exception error)

  {

  Response.Write(error.Message);

  Response.Write("");

  txtDbName.Text = SqlStr2;

  }

  finally

  {

  con.Close();

  }

  }

  ///

  /// 恢复数据库,可选择是否可以强制还原(即在其他人在用的时候,依然可以还原)

  ///

  /// 待还原的数据库名称

  /// 带还原的备份文件的完全路径

  /// 恢复数据库失败的信息

  /// 是否强制还原(恢复),如果为TRUE,则exec killspid '数据库名' 结束此数据库的进程,这样才能还原数据库

  ///

  public bool RestoreDataBase(string databasename, string databasefile, ref string returnMessage, bool forceRestore, SqlConnection conn)

  {

  bool success = true;

  string path = databasefile;

  string dbname = databasename;

  string restoreSql = "use master;";

  if (forceRestore)//如果强制回复

  restoreSql += string.Format("use master exec killspid '{0}';", databasename);

  restoreSql += "restore database @dbname from disk = @path;";

  SqlCommand myCommand = new SqlCommand(restoreSql, conn);

  myCommand.Parameters.Add("@dbname", SqlDbType.Char);

  myCommand.Parameters["@dbname"].Value = dbname;

  myCommand.Parameters.Add("@path", SqlDbType.Char);

  myCommand.Parameters["@path"].Value = path;

  Response.Write(restoreSql);

  try

  {

  myCommand.Connection.Open();

  myCommand.ExecuteNonQuery();

  returnMessage = "还原成功";

  }

  catch (Exception ex)

  {

  returnMessage = ex.Message;

  success = false;

  }

  finally

  {

  myCommand.Connection.Close();

  }

  return success;

  }

  protected void Button3_Click(object sender, EventArgs e)

  {

  string path = this.FileUpload1.PostedFile.FileName; //获得备份路径及数据库名称

  string dbName = string.Empty;

  if (DropDownList1.Items.Count != 0)

  {

  dbName = DropDownList1.SelectedValue.Trim();

  }

  else

  {

  dbName = txtDbName.Text.Trim();

  }

  string returnMessage = string.Empty;

  string SqlStr1 = "Data Source=.\sqlexpress;Initial Catalog='" + dbName + "';Integrated Security=True";

  SqlConnection con = new SqlConnection(SqlStr1);

  RestoreDataBase(txtDbName.Text, path, ref returnMessage, true,con);

  Response.Write(returnMessage);

  }

  }

  }