Interpolating a string in c#

Question

I want to use string interpolation for the below:

payloadArgs = string.Format("{0}TrackingID: \"{1}\"", payload.ToString().Replace("\n", "; "), trackingId);

I have tried

payloadArgs = $"{trackingId} TrackingId, \"{payload.ToString().Replace("\n", "; "), trackingId};

but I am obviously getting it wrong as I am getting a compile error "Cannot implicitly convert a string to int" over the "trackingId" and a warning about "newline in constant"

What's the correct way to do this?

What is `payload` and why are you calling `ToString().Replace("\n", "; ")` on it? If it's a number, it won't contain newlines. The code you posted has nothing to do with *ints* anyway. Post a *reproducible* example — Panagiotis Kanavos, Jul 05 '17 at 11:06
this `{payload.ToString().Replace("\n", "; "), trackingId}` < there is a comma in there that wont work — EpicKip, Jul 05 '17 at 11:06

Guy · Accepted Answer · 2017-07-05T11:08:24.290

3

You are close. You changed the order between the variables, you had trackingId as the first variable instead as the second. In addition, string interpolation doesn't receive parameters in the structure of (string, parameter, parameter), it get it inside the curly brackets

payloadArgs = $"{payload.ToString().Replace("\n", "; ")}TrackingID: \"{trackingId}\"";

edited Jul 05 '17 at 11:08

answered Jul 05 '17 at 11:02

Guy

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Probably it worth specifying what exactly was wrong – Sergey Berezovskiy Jul 05 '17 at 11:04
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@SergeyBerezovskiy added an explanation. – Guy Jul 05 '17 at 11:08

Interpolating a string in c#

1 Answers1