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>Thanks, Rick. For some reason I thought we should use C# in the {{}} blocks. At least C# null expressions work fine, e.g.
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>if (condition)? expr1: expr2

That's a syntax specifically supported by Angular, but it's not C# code. Like Rick said, all of this code is running on the client side not on the server. The expressions themselves are Angular expressions. They just happen to look like C# in this one instance.