如何将viewdata属性放入asp标签的属性中

Question

I'd like to use the old school SiteMapPath in my MVC application how can I pass value to an attribute of the asp tag?

To be more precize I'd like to make the code below valid:

<asp:SiteMapPath 
      SiteMapProvider="Expression that returns ViewData["CurrentSiteMapProvider"]" 
      ID="SiteMapPath" runat="server"/>

Answer 1

Something like this should work:

<asp:SiteMapPath 
  SiteMapProvider='<%# ViewState["CurrentSiteMapProvider"] %>' 
  ID="SiteMapPath" runat="server"/>

You need a DataBind somewhere in the page. Also note that you need to use apostrophes not quotes around the data binding expression.

Edit : I assume that by ViewData you mean ViewState. If not just adjust what's inside the <%# and %>.

Answer 2

I finally decided to rewrite the breadcrumb as html helper method. It took me 15 min to get it right and now I have full control over the html.