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(); 

                    } 

                } 

            }