用asp.net程序备份或还原SQLServer

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();
                    }
                }
            }