server error in '/' application.

尝试打开的数据库已经被机器 'win-an0nijjc3r4' 上的用户 'admin' 以排它的方式打开。当数据库可使用后请再试一次。

description: an unhandled exception occurred during the execution of the current web request. please review the stack trace for more information about the error and where it originated in the code.

exception details: system.exception: 尝试打开的数据库已经被机器 'win-an0nijjc3r4' 上的用户 'admin' 以排它的方式打开。当数据库可使用后请再试一次。

source error:

line 521:line 522:	templatebuilder.append("\">" + utils.objecttostr(dr2["title"]) + "</a></p>\r\n															");line 523:	datatable lmlb2=get_category_child_list("news", utils.strtoint(utils.objecttostr(dr2["id"]), 0));line 524:line 525:	foreach(datarow dr3 in lmlb2.rows)

source file: e:\学校网站\aspx\main\news_list.aspx    line: 523

stack trace:

[exception: 尝试打开的数据库已经被机器 'win-an0nijjc3r4' 上的用户 'admin' 以排它的方式打开。当数据库可使用后请再试一次。]  dtcms.dbutility.dbhelperoledb.getsingle(string sqlstring, oledbparameter[] cmdparms) in d:\net\双中实验校源码\dtcms.dbutility\dbhelperoledb.cs:528  dtcms.dal.channel.getchannelid(string channel_name) in d:\net\双中实验校源码\dtcms.dal\channel.cs:576  dtcms.bll.channel.getchannelid(string channel_name) in d:\net\双中实验校源码\dtcms.bll\channel.cs:200  dtcms.bll.article_category.getchildlist(int32 parent_id, string channel_name) in d:\net\双中实验校源码\dtcms.bll\article_category.cs:94  dtcms.web.ui.basepage.get_category_child_list(string channel_name, int32 parent_id) in d:\net\双中实验校源码\dtcms.web.ui\label\category.cs:70  asp.aspx_main_news_list_aspx.oninit(eventargs e) in e:\学校网站\aspx\main\news_list.aspx:523  system.web.ui.control.initrecursive(control namingcontainer) +134  system.web.ui.page.processrequestmain(boolean includestagesbeforeasyncpoint, boolean includestagesafterasyncpoint) +489


version information: microsoft .net framework version:4.0.30319; asp.net version:4.0.30319.34209