ASP.NET 恢复备份Sql server ASP.NET 恢复备份Sqlserver实现代码

时间:2021-03-18 人气:0

想了解ASP.NET 恢复备份Sqlserver实现代码的相关内容吗，在本文为您仔细讲解ASP.NET 恢复备份Sql server的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：ASP.NET,恢复备份,Sqlserver，下面大家一起来学习吧。

最近做的一个项目因为服务器是在特殊机房上的，因为安全方面的考虑，不能给我们开发者提供FTP服务，所以每次更新版本都得自己跑一趟，而他的机房有很远，所以我一直想能不能开发一个维护版本的系统呢，对数据库和代码进行在线更新，就不用自己跑了，于是就有了下面的尝试，在线恢复和备份SQL Server：

前台代码：

复制代码代码如下:

 
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="SqlDbMgmt.aspx.cs" Inherits="SysSourceMgmt.SqlDbMgmt" %> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head runat="server"> 
<title></title> 
</head> 
<body> 
<form id="form1" runat="server"> 
<div> 
<table> 
<tr> 
<td style="width: 100px"> 
<span style="font-size: 9pt">操 作 数 据 库</span> 
</td> 
<td> 
<asp:DropDownList ID="DropDownList1" runat="server" Font-Size="9pt" Width="124px"> 
</asp:DropDownList> 
<asp:TextBox ID="txtDbName" runat="server"></asp:TextBox> 
</td> 
<td style="width: 100px"> 
</td> 
</tr> 
<tr> 
<td style="width: 100px"> 
<span style="font-size: 9pt">备份名称和位置</span> 
</td> 
<td style="width: 100px"> 
<asp:TextBox ID="TextBox1" runat="server" Font-Size="9pt" Width="117px"></asp:TextBox> 
</td> 
<td style="width: 100px"> 
<span style="font-size: 9pt; color: #ff3300">（如D:\beifen）</span> 
</td> 
</tr> 
<tr> 
<td colspan="3"> 
<asp:Button ID="Button1" runat="server" Font-Size="9pt" OnClick="Button1_Click" Text="备份数据库" /> 
</td> 
</tr> 
</table> 
</div> 
<div style="width: 100%; height: 100px"> 
<table> 
<tr> 
<td style="width: 100px; height: 21px"> 
<span style="font-size: 9pt">操 作 数 据 库</span> 
</td> 
<td> 
<asp:DropDownList ID="DropDownList2" runat="server" Font-Size="9pt" Width="124px"> 
</asp:DropDownList> 
</td> 
<td style="width: 100px; height: 21px"> 
</td> 
</tr> 
<tr> 
<td style="width: 100px"> 
<span style="font-size: 9pt">操 作 数 据 库</span> 
</td> 
<td style="width: 100px"> 
<asp:FileUpload ID="FileUpload1" runat="server" Font-Size="9pt" Width="190px" /> 
</td> 
<td style="width: 100px"> 
</td> 
</tr> 
<tr> 
<td colspan="3"> 
<asp:Button ID="Button2" runat="server" Font-Size="9pt" OnClick="Button2_Click" Text="还原数据库" /> 
<asp:Button ID="Button3" runat="server" Font-Size="9pt" OnClick="Button3_Click" Text="强制还原数据库" /> 
</td> 
</tr> 
</table> 
</div> 
</form> 
</body> 
</html> 

后台：

复制代码代码如下:

 
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("<script language=javascript>alert('此文件已存在，请从新输入！');location='Default.aspx'</script>"); 
return; 
} 
SqlCommand com = new SqlCommand(SqlStr2, con); 
com.ExecuteNonQuery(); 
Response.Write("<script language=javascript>alert('备份数据成功！');'</script>"); 
} 
catch (Exception error) 
{ 
Response.Write(error.Message); 
Response.Write("<script language=javascript>alert('备份数据失败！')</script>"); 
} 
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("<script language=javascript>alert('还原数据成功！');'</script>"); 
} 
catch (Exception error) 
{ 
Response.Write(error.Message); 
Response.Write("<script language=javascript>alert('还原数据失败！')</script>"); 
txtDbName.Text = SqlStr2; 
} 
finally 
{ 
con.Close(); 
} 
} 
/// <summary> 
/// 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） 
/// </summary> 
/// <param name="databasename">待还原的数据库名称</param> 
/// <param name="databasefile">带还原的备份文件的完全路径</param> 
/// <param name="errormessage">恢复数据库失败的信息</param> 
/// <param name="forceRestore">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</param> 
/// <returns></returns> 
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); 
} 
} 
} 

效果图：

经过试验，大体完成了我需要的功能，具体优化后期进行中。

加载全部内容