asp.net 数据库备份与还原

最近在替学校做网站,今天刚大致做好了数据库备份与还原功能,因为网站图片是存放在文件下,所以备份数据库时,图片文件夹要一同考拷贝.具体如下:

DbOper类:

using System.IO;
///
///
public sealed class DbOper
{
///
/// DbOper类的构造函数
///
private DbOper()
{

}
/// <summary>
/// 复制文件
/// </summary>
/// <param name="from">要复制文件的源地址</param>
/// <param name="to">要复制到的路径</param>
public static void copyfolder(string from, string to)
{
string fname = from.Substring(from.LastIndexOf("\\") + 1);
if (Directory.Exists(from))
{
Directory.CreateDirectory(from);
}
DirectoryInfo di = new DirectoryInfo(from);
if (!Directory.Exists(to + "\\" + di.Name))
{
Directory.CreateDirectory(to + "\\" + di.Name);
}
string[] fi = Directory.GetFiles(di.FullName);
for (int i = 0; i < fi.Length; i++)
{
string f_name = fi[i].Substring(fi[i].LastIndexOf("\\") + 1);
File.Copy(from + "\\" + f_name, to + "\\" + fname + "\\" + f_name, true);
}
DirectoryInfo[] dis = di.GetDirectories();
for (int j = 0; j < dis.Length; j++)
{
copyfolder(dis[j].FullName.ToString(), to + "\\" + fname);
}
}
/// <summary>
/// 数据库备份
/// </summary>
/// <param name="pathfilename">备份的路径</param>
/// <returns>返回结果信息</returns>
public static string DbBackup(string pathfilename)
{
string ret;
SQLDMO.Backup oBackup = new SQLDMO.BackupClass();
SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
try
{
oSQLServer.LoginSecure = true;//验证模式，FALSE 是sql server验证模式 True 是混合验证模式
oSQLServer.Connect(".", "", "");// 联接数据服务
oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;// 恢复类型数据库
oBackup.Database = "TzcAlumni";//数据库名称
oBackup.Files = @pathfilename;//备份文件名,如果是多个设备上的需使用.devices属性
oBackup.BackupSetName = "TzcAlumni";//要备份的数据库
oBackup.BackupSetDescription = "数据库备份";//描述说明
oBackup.Initialize = true;//表示是追加备份还是重新备份，原来如果有同名的备份是否覆盖它
oBackup.SQLBackup(oSQLServer);
ret = "备份成功";
}
catch (Exception x)
{
ret = "备份失败-" + x.ToString();
}
finally
{
oSQLServer.DisConnect();
}
return ret;
}

/// <summary>
/// 数据库恢复
/// </summary>
/// <param name="pathfilename">备份数据所在的路径</param>
/// <returns>返回结果信息</returns>
public static string DbRestore(string pathfilename)
{
string ret;
SQLDMO.Restore oRestore = new SQLDMO.RestoreClass();
SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
try
{
oSQLServer.LoginSecure = true;
oSQLServer.Connect(".", "", "");
oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
oRestore.Database = "TzcAlumni";
oRestore.Files = @pathfilename;
oRestore.FileNumber = 1;//文件在设备上的ID号如果你只有一个文件就是1
oRestore.ReplaceDatabase = true;//替代现有数据库如不存则创建他
oRestore.SQLRestore(oSQLServer);//调用恢复方法
ret = "成功恢复";
}
catch(Exception x)
{
ret = "恢复失败-" + x.ToString();
}
finally
{
oSQLServer.DisConnect();
}
return ret;
}
}

前台:

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<div style="margin: 20px 20px 20px 20px;">
<asp:Button ID="Button1" runat="server" Text="备份数据库" OnClick="Button1_Click" />
<asp:GridView ID="GridView1" runat="server" OnRowCommand="GridView1_RowCommand">
<Columns>
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="false" CommandArgument="<%#Container.DataItem%>"
CommandName="recover" Text="<div onclick="JavaScript:return confirm('确定恢复该数据库备份吗？')">还还数据库</div>"></asp:LinkButton>
</ItemTemplate>
<ItemStyle CssClass="trow" Width="60px" />
</asp:TemplateField>
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="false" CommandArgument="<%#Container.DataItem%>"
CommandName="deleted" Text="<div onclick="JavaScript:return confirm('确定删除该数据库备份吗？')">删除</div>">< /asp:LinkButton>
</ItemTemplate>
<ItemStyle CssClass="trow" Width="40px" />
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:Label ID="Label2" runat="server"></asp:Label>
</div>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress1" runat="server">
<ProgressTemplate>
<img src="Images/等待.gif" />
<br />
<asp:Label ID="Label1" runat="server" Text="正在执行相关操作，请稍后..."></asp:Label>
</ProgressTemplate>
</asp:UpdateProgress>

后台:

protected void Page_Load(object sender, EventArgs e)
{
BindData();
}
private void BindData()
{
string[] path = Directory.GetDirectories(@Server.MapPath("Date/DbBackup/"));//路径
ArrayList str = new ArrayList();
foreach (string fname in path)
{
str.Add(fname.Substring(Server.MapPath("Date/DbBackup/").Length));
}
GridView1.DataSource = str;
GridView1.DataBind();
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
string strpath = Server.MapPath("Date/DbBackup/") + System.DateTime.Now.ToString().Replace(":", "").Replace(" ", "");
Directory.CreateDirectory(strpath);//创建一个新的文件夹
string path = "[" + strpath + "/TzcAlumni" + ".bak]";//备份路径及文件名
DbOper.DbBackup(path);//备份数库库
DbOper.copyfolder(Server.MapPath("../Class/ClassPhotos"), strpath);//复制照片文件夹
((Label)UpdateProgress1.FindControl("Label1")).Text = "备份成功";
BindData();
CMessageBox.ShowAjaxDialog(UpdatePanel1,"备份成功");
}
catch (Exception x)
{
((Label)UpdateProgress1.FindControl("Label1")).Text = "备份失败";
CMessageBox.ShowAjaxDialog(UpdatePanel1, "备份失败-" + x.ToString());
}
}
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName.ToString() == "deleted")
{
string AdminID = Session["AdminID"].ToString();
Directory.Delete(Server.MapPath("Date/DbBackup/") + e.CommandArgument.ToString(), true);//删除所选的备份文件夹
BindData();
CMessageBox.ShowAjaxDialog(UpdatePanel1, "删除成功");
Session["AdminID"] = AdminID;
return;
}
if (e.CommandName.ToString() == "recover")
{

try
{
KillSpidDataClassesDataContext kdb = new KillSpidDataClassesDataContext();
kdb.killspid("TzcAlumni");//关闭用户与数据库的连接
string strpath = "[" + Server.MapPath("Date/DbBackup/") + e.CommandArgument.ToString() +"/TzcAlumni" + ".bak]";
Directory.Delete(Server.MapPath("../Class/ClassPhotos"), true);//删除原来的照片文件夹
DbOper.copyfolder(Server.MapPath("../Admin/Date/DbBackup/" + e.CommandArgument.ToString() + "/") + "ClassPhotos", Server.MapPath("../Class"));//复制照片文件夹
string ret = DbOper.DbRestore(strpath);//还原数据库
Label2.Text = ret;
CMessageBox.ShowAjaxDialog(UpdatePanel1, "1");
return;
}
catch (Exception x)
{
CMessageBox.ShowAjaxDialog(UpdatePanel1,"数据恢复失败-"+x.ToString());
}
}
}

killspid存储过程:

----------------断开所有用户打开的连接,关闭数据库
use master
go

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[p_killspid]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[killspid]
GO

create proc killspid
@dbname sysname --要关闭进程的数据库名
as
declare @s nvarchar(1000)
declare tb cursor local for
select s='kill '+cast(spid as varchar)
from master..sysprocesses
where dbid=db_id(@dbname)

open tb
fetch next from tb into @s
while @@fetch_status=0
begin
exec(@s)
fetch next from tb into @s
end
close tb
deallocate tb
go

大部分代码是从网上搜集而来,发上来以便自己以后查阅,希望能给有同样需求的朋友一个参考.