Question

I am building a GridView which can download songs. So I use a hyperlink fileld and use DateNavigateUrlFormatString.

E.G.

    DataNavigateUrlFormatString="~/uploads/{0}"

Now,

I need to combine Page.User.Identity.Name into DateNavigateUrlFormatString

For example,

    DataNavigateUrlFormatString="~/uploads/UserName/{0}" which  Page.User.Identity.Name depending on the user login. 

I tried to access DataNavigateUrlFormatString from the code behind but I couldn’t.
I tried to use Eval such as

      '~/uploads/" <%# Eval("Page.User.Identity.Name") %> /{0}'

this doesn’t work as well.

Hope someone could point me out.

Thanks,

L

FInal Solution

     <asp:TemplateField HeaderText="Play">
              <ItemTemplate> 
                    <asp:HyperLink ID="HyperLink2" runat="server" NavigateUrl = '<%#    String.Format("~/UserUploads/{0}/",Page.User.Identity.Name)+ "/" + Eval("Song_Name")  %>' Text="Play" >
                    </asp:HyperLink>

                </ItemTemplate> 
            </asp:TemplateField> 

Answer 1

DataNavigateUrlFormatString expects the placeholder(s) to come from fields in the datasource of the control.

My suggestion is that since you already know the url you are trying to build you could set the NavigateUrl property of hyperlink control.

NavigateUrl =  '<%# String.Format("~/UserUploads/{0}/",Page.User.Identity.Name)+ "/" + Eval("Song_Name") %>'