改进的ASP备份SQL Server数据库

<form method="post" name="myform" action="?action=backupdatabase">
选择操作：<INPUT TYPE="radio" NAME="act" id="act_backup"value="backup"><label for=act_backup>备份</label>
<INPUT TYPE="radio" NAME="act" id="act_restore" value="restore"><label for=act_restore>恢复</label>
<br>数据库名：<INPUT TYPE="text" NAME="databasename" value="<%=request("databasename")%>">
<br>文件路径：<INPUT TYPE="text" NAME="bak_file" value="c:\$1.bak">(备份或恢复的文件路径)<br>
<input type="submit" value="确定" id=submit1 name=submit1>
</form>
<%
'SQL Server 数据库的备份与恢复!
if request("action")="backupdatabase" Then
dim sqlserver,sqlname,sqlpassword,sqlLoginTimeout,databasename,bak_file,act
sqlserver = "localhost"
sqlname = "sa"
sqlpassword ="password"
sqlLoginTimeout = 15
databasename = trim(request("databasename"))
bak_file = trim(request("bak_file"))
bak_file = replace(bak_file,"$1",databasename)
act = lcase(request("act"))
if databasename = "" then
response.write "input database name"
else
if act = "backup" then
Set srv=Server.CreateObject("SQLDMO.SQLServer")
srv.LoginTimeout = sqlLoginTimeout
srv.Connect sqlserver,sqlname, sqlpassword
Set bak = Server.CreateObject("SQLDMO.Backup")
bak.Database=databasename
bak.Devices=Files
bak.Action   = 0
bak.Initialize   = 1
'bak.Replace        = True
bak.Files=bak_file
bak.SQLBackup srv
if err.number>0 then
response.write err.number&"<font color=red><br>"
response.write err.description&"</font>"
end if
Response.write "<font color=green>备份成功!</font>"
elseif act="restore" then
'恢复时要在没有使用数据库时进行！
Set srv=Server.CreateObject("SQLDMO.SQLServer")
srv.LoginTimeout = sqlLoginTimeout
srv.Connect sqlserver,sqlname, sqlpassword
Set rest=Server.CreateObject("SQLDMO.Restore")
rest.Action=0 ' full db restore
rest.Database=databasename
rest.Devices=Files
rest.Files=bak_file
rest.ReplaceDatabase=True 'Force restore over existing database
if err.number>0 then
response.write err.number&"<font color=red><br>"
response.write err.description&"</font>"
end if
rest.SQLRestore srv
Response.write "<font color=green>恢复成功!</font>"
else
Response.write "<font color=red>没有选择操作</font>"
end if
end if
end if
%>