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用asp.net程序备份或还原SQLServer

2017-09-18 20:03 357 查看

主要是利用SQL Server提供的SQL语句来实现备份的。
备份：use master;backup database @name to disk=@path;
恢复：use master;restore database @name from disk=@path;
上面用的是参数化SQL语句，可以在程序执行的时候动态给参数赋值。

.aspx代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DatabaseAction.aspx.cs" Inherits="DatabaseAction" %>

            <!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>无标题页</title>

            </head>

            <body>

                <form id="form1" runat="server">

                <div>

                <table border="0" width="100%">

                <tr><td colspan="2">数据库还原和备份</td></tr>

                <tr><td>请选择数据库</td><td>

                    <asp:DropDownList ID="ddlDatabaseList" runat="server">

                    </asp:DropDownList></td></tr>

                <tr><td>

                    数据库文件名</td><td>

                    <asp:TextBox ID="txtDbFileName" runat="server"></asp:TextBox></td></tr>

                <tr><td>

                    操作选项</td><td>

                    <asp:RadioButton ID="rbBackup" runat="server" Checked="True" GroupName="action" Text="备份" />

                    <asp:RadioButton ID="rbRestore" runat="server" GroupName="action" Text="还原" /></td></tr>

                    <tr><td>

                    操作</td><td>

                         <asp:Button ID="btnOK" runat="server" OnClick="btnOK_Click" Text="执行" /></td></tr>

                </table>

                </div>

                </form>

            </body>

            </html>

.cs代码

using System;

            using System.Data;

            using System.Configuration;

            using System.Collections;

            using System.Web;

            using System.Web.Security;

            using System.Web.UI;

            using System.Web.UI.WebControls;

            using System.Web.UI.WebControls.WebParts;

            using System.Web.UI.HtmlControls;

            using System.Data.SqlClient;

            /// <summary>

            /// 功能说明：本例中演示在asp.net中如何备份和恢复数据库

            /// 备份数据库主要使用数据库的备份语句。数据库备份文件放在

            /// App_Data文件夹下。

            /// 作者：周公

            /// 日期：2008-08-19

            /// 首发地址：http://blog.csdn.net/zhoufoxcn/archive/2008/08/19/2796077.aspx

            /// </summary>

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

            {

                protected void Page_Load(object sender, EventArgs e)

                {

                    if (!Page.IsPostBack)

                    {

                        //在DropDownList中绑定所有数据库

                        SqlConnection connection = new SqlConnection("Data Source=ZHOUFOXCN;User ID=sa;Password=sa");

                        SqlCommand command = new SqlCommand("sp_helpdb", connection);

                        command.CommandType = CommandType.StoredProcedure;

                        connection.Open();

                        SqlDataReader reader = command.ExecuteReader();

                        ddlDatabaseList.DataSource = reader;

                        ddlDatabaseList.DataTextField = "Name";

                        ddlDatabaseList.DataBind();

                        reader.Close();

                        connection.Close();

                    }

                }

                protected void btnOK_Click(object sender, EventArgs e)

                {

                    string dbFileName = txtDbFileName.Text.Trim();

                    SqlConnection connection = new SqlConnection("Data Source=ZHOUFOXCN;User ID=sa;Password=sa");

                    string dbName = ddlDatabaseList.SelectedValue;

                    if (!dbFileName.EndsWith(".bak"))

                    {

                        dbFileName += ".bak";

                    }

                    if (rbBackup.Checked)//备份数据库

                    {

                        SqlCommand command = new SqlCommand("use master;backup database @name to disk=@path;",connection);

                        connection.Open();

                        string path=Server.MapPath("~\\App_Data")+"\\"+dbFileName;

                        command.Parameters.AddWithValue("@name", dbName);

                        command.Parameters.AddWithValue("@path", path);

                        command.ExecuteNonQuery();

                        connection.Close();

                    }

                    else//恢复数据库

                    {

                        SqlCommand command = new SqlCommand("use master;restore database @name from disk=@path;", connection);

                        connection.Open();

                        string path = Server.MapPath("~\\App_Data") + "\\" + dbFileName;

                        command.Parameters.AddWithValue("@name", dbName);

                        command.Parameters.AddWithValue("@path", path);

                        command.ExecuteNonQuery();

                        connection.Close();

                    }

                }

            }

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