I always find myself referencing my other projects for this one when I jump between languages, so decided to toss it on the web.

Both examples are in the context of ASP .Net, but syntax also applies np to Winforms

In VB:

<asp:label id="lblmessage" runat="server" visible='<%# iif(1=1,"true","false") %>' />

C# Equivalent:

<asp:label id="lblmessage" runat="server" visible='<%# 1 == 1 ? "true" : "false" %>' />