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  • 数据库的备份与还原操作

    Default.aspx

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    <%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>
    
    <!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 id="Head1" runat="server">
        <title>备份数据库</title>
    </head>
    <body style="text-align: center">
        <form id="form1" runat="server">
        <div>
                        <table cellpadding="0" cellspacing="0" style=" 400px; height: 7px;">
                            <tr>
                                <td style="height: 4px; text-align: left;  295px;">
                                </td>
                            </tr>
                            <tr>
                                <td style="height: 18px; text-align: center;  295px;">
                                    &nbsp;</td>
                            </tr>
                            <tr>
                                <td style="text-align: center;  295px;">
                                    <asp:RadioButtonList ID="RadioButtonList1" runat="server" AutoPostBack="True" Font-Size="9pt"
                                        RepeatDirection="Horizontal">
                                        <asp:ListItem Selected="True">备份数据库</asp:ListItem>
                                        <asp:ListItem>还原数据库</asp:ListItem>
                                    </asp:RadioButtonList></td>
                            </tr>
                            <tr style="font-size: 12pt">
                                <td style="height: 6px; text-align: center;  295px;">
    
                                </td>
                            </tr>
                            <tr style="font-size: 12pt">
                                <td rowspan="1" style="text-align: center;  295px; height: 3px;">
                                    <table cellpadding="0" cellspacing="0" width="100%" style="height: 11px">
                                        
                                        <tr>
                                            <td style=" 100px; text-align: center">
                                                <span style="font-size: 9pt">操 作 数 据 库</span></td>
                                            <td style="text-align: left">
                                                    <asp:DropDownList ID="dropSqlName" runat="server" Font-Size="9pt" Width="190px">
                                                    </asp:DropDownList></td>
                                        </tr>
                                    </table>
                                </td>
                            </tr>
                            <tr>
                                <td style="text-align: center;  295px;">
                                    <asp:Panel ID="Panel2" runat="server" Height="5px" Width="100%">
                                        <table cellpadding="0" cellspacing="0" style=" 106%; height: 112px">
                                            <tr>
                                        <asp:Image ID="Image1" runat="server" ImageUrl="~/Images/beifentu.bmp" />
                                        </tr>
                                            <tr>
                                                <td style=" 100px; height: 25px; text-align: center">
                                                    <span style="font-size: 9pt">备份名称和位置</span></td>
                                                <td style="height: 25px; text-align: left;">
                                                    <asp:TextBox ID="TextBox1" runat="server" Font-Size="9pt" Width="183px"></asp:TextBox>
                                                    <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="TextBox1"
                                                        ErrorMessage="备份地址不能为空">*</asp:RequiredFieldValidator><span style="font-size: 9pt;
                                                            color: #ff3300">(如D:\beifen)</span></td>
                                            </tr>
                                        </table>
                                    </asp:Panel>
                                    <asp:Panel ID="Panel1" runat="server" Visible="False" Width="100%" Height="5px">
                                        <table cellpadding="0" cellspacing="0" width="100%">
                                            <tr>
                                             <asp:Image ID="Image2" runat="server" ImageUrl="~/Images/huanyuantu.bmp" />
                                            </tr>
                                            <tr>
                                                <td style=" 100px; height: 21px; text-align: center;">
                                                    <span style="font-size: 9pt">还 原 数 据 库</span></td>
                                                <td colspan="2" style="height: 21px; text-align: left;">
                                                    <asp:FileUpload ID="fileShow" runat="server" Font-Size="9pt" Width="190px" /></td>
                                            </tr>
                                        </table>
                                    </asp:Panel>
                                    <table cellpadding="0" cellspacing="0" style=" 99%; height: 167px;">
                                        <tr>
                                            <td style="height: 1px; text-align: center;">
                                                <asp:Panel ID="Panel3" Height="5px" runat="server">
                                                    <asp:ImageButton ID="ImageButton1" runat="server" ImageUrl="~/Images/btnbf.JPG" 
            onclick="ImageButton1_Click" /></asp:Panel>
                                                <asp:Panel ID="Panel4" runat="server" Height="5px" Visible="False">
                                                      <asp:ImageButton ID="ImageButton2" runat="server" 
            ImageUrl="~/Images/btnhyk.bmp" onclick="ImageButton2_Click" /></asp:Panel>
                                                <asp:ValidationSummary ID="ValidationSummary1" runat="server" Font-Size="9pt" ShowMessageBox="True"
                                                    ShowSummary="False" />
                                            </td>
                                        </tr>
                                    </table>
                                </td>
                            </tr>
                            <tr>
                                <td style="height: 19px;  295px;">
                                    &nbsp;</td>
                            </tr>
                        </table>
        
        </div>
        
       
        
      
        
       
        </form>
    </body>
    </html>
    复制代码

    Default.aspx.cs

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    using System;
    using System.Configuration;
    using System.Data;
    using System.Linq;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.HtmlControls;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Xml.Linq;
    
    using System.Data.SqlClient;  //引用命名空间
    using System.IO;   //引用命名空间
    
    public partial class _Default : System.Web.UI.Page 
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                string cmdtxt1 = ConfigurationSettings.AppSettings["strCon"];
                //定义查询所有的数据库的SQL语句
                string cmdtxt2 = "Exec sp_helpdb";
                //创建数据库连接对象
                SqlConnection Con = new SqlConnection(cmdtxt1);
                //打开数据库连接
                Con.Open();
                //创建命令对象
                SqlCommand mycommand = new SqlCommand(cmdtxt2, Con);
                //创建一个数据阅读器
                SqlDataReader dr = mycommand.ExecuteReader();
                //将从数据库中读取到的数据作为dropSqlName数据源
                this.dropSqlName.DataSource = dr;
                //指定文本内容
                this.dropSqlName.DataTextField = "name";
                //从数据库中绑定数据
                this.dropSqlName.DataBind();
                //关闭数据阅读器
                dr.Close();
                //关闭数据库连接
                Con.Close();
            }
            if (this.RadioButtonList1.SelectedIndex == 1)
            {
                this.Panel1.Visible = true;
                this.Panel2.Visible = false;
                this.Panel3.Visible = false;
                this.Panel4.Visible = true;
            }
            else
            {
                this.Panel2.Visible = true;
                this.Panel1.Visible = false;
                this.Panel3.Visible = true;
                this.Panel4.Visible = false;
            }
        }
         protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
        {
            //定义数据库连接字串
            string cmdtxt1 = "Server=localhost;database='" + this.dropSqlName.SelectedValue + "';Uid=sa;Pwd=123";
            //定义备数据库的T-SQL命令的字符串
            string cmdtxt2 = "backup database " + this.dropSqlName.SelectedValue + " to disk='" + this.TextBox1.Text.Trim() + ".bak'";
            //创建数据库连接对象
            SqlConnection Con = new SqlConnection(cmdtxt1);
            //打开数据库连接
            Con.Open();
            try
            {
                //判断上传文件是否空
                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;
                }
                //创建命令对象
                SqlCommand Com = new SqlCommand(cmdtxt2, Con);
                //执行数据库操作
                Com.ExecuteNonQuery();
                Response.Write("<script language=javascript>alert('备份数据成功!');location='Default.aspx'</script>");
            }
            catch (Exception ms)
            {
                Response.Write(ms.Message);
                Response.Write("<script language=javascript>alert('备份数据失败!')</script>");
            }
            finally
            {
                //关闭数据库连接
                Con.Close();
            }
        }
         protected void ImageButton2_Click(object sender, ImageClickEventArgs e)
         {
             //获得备份路径及数据库名称
             string path = this.fileShow.PostedFile.FileName;
             //获取文件的后缀名
             string last = path.Substring(path.LastIndexOf(".") + 1);
             string dbname = this.dropSqlName.SelectedValue;
             //判断是不是数据库备份文件
             if (last == "bak")
             {
                 //定义数据库连接字符串
                 string cmdtxt1 = "Server=localhost;database='" + this.dropSqlName.SelectedValue + "';Uid=sa;Pwd=123";
                 //定义实现还原数据库操作的字符串
                 string cmdtxt2 = "use master restore database " + dbname + " from disk='" + path + "'";
                 //定义数据库连接对象
                 SqlConnection Con = new SqlConnection(cmdtxt1);
                 //打开数据库连接
                 Con.Open();
                 try
                 {
                     //创建命令对象
                     SqlCommand Com = new SqlCommand(cmdtxt2, Con);
                     //执行数据库命令
                     Com.ExecuteNonQuery();
                     Response.Write("<script language=javascript>alert('还原数据成功!');location='Default.aspx'</script>");
                 }
                 catch (Exception ms)
                 {
                     Response.Write(ms.Message);
                     Response.Write("<script language=javascript>alert('还原数据失败!')</script>");
                 }
                 finally
                 {
                     //关闭数据库连接
                     Con.Close();
                 }
             }
             else
             {
                 Response.Write("<script language=javascript>alert('必须是数据库文件!');</script>");
             }
         }
    }
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  • 原文地址:https://www.cnblogs.com/codeloves/p/2970605.html
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