c# - ASP.NET Request QueryString says value is null

Question

I have this link here...

<li><a href="/?fileDownloadable=downloadableProducts/MyPDF.pdf" target="_blank" runat="server">MyPDF</a></li>

and in my code behind I try to a Request.QueryString["fileDownloadable"] and it says it returning null...which in the link its not..

Any Ideas?

Answer 1

放一个“。” 在斜线前面或删除斜线

<a href="./?fileDownloadable=downloadableProducts/MyPDF.pdf" target="_blank" runat="server">MyPDF</a>

OR

<a href="?fileDownloadable=downloadableProducts/MyPDF.pdf" target="_blank" runat="server">MyPDF</a>

注意：这将引用/重定向当前页面。那是你要的吗？