大家可以看一下asp.net 的 Possible Values
sTarget String that specifies or receives one of the following values.
name The name of the target window or frame. _blank Load the linked document into a new blank window. This window is not named. _media Load the linked document into the HTML content area of the Media Bar. Available in Internet Explorer 6 or later. _parent Load the linked document into the immediate parent of the document the link is in. _search Load the linked document into the browser search pane. Available in Internet Explorer 5 or later. _self Default. Load the linked document into the window in which the link was clicked (the active window). _top Load the linked document into the topmost window. The property is read/write. The property has a default value of _self.
看看我上面标注为红色部分就知道是为什么了。asp.net的文章列表中的hyperlink设置了这样的属性 target="_new"。
试试下面的代码，我也作出了同样的效果
AspnetUpload.net
Upload4Asp.net
不过有一点不好，就是我打开新页面之后，再次返回主页面点击其它链接，虽然新的链接已经加载，但是并不自动获得焦点而是停留在主页面。想了个办法解决，就是在打开的新页面中加一点javascript代码：<script language=javascript>