Simple parse of an int into a string [duplicate]

Question

In my class, my teacher showed me something similar to this. Visual Studio is saying string doesn't have a definition for parse. I remember in class the teacher said it was something.parse(thingyouwanttoparse). No commas. I've searched online, but all the options are different to the one the teacher showed me. What am I doing wrong?

if (!ValidMenuOption) { string errorMsg = "\n\t Option must be "; int iteration = 1; while (iteration <=numAvailable) { errorMsg = errorMsg + string.parse(iteration) + ", "; iteration += 1 } errorMsg = errorMsg + "or 0"; Console.WriteLine(errorMsg); } //end if

It is highly recommended to state the programming language you're using (and tag it too) — Nir Alfasi
– Nir Alfasi, Commented Apr 23, 2013 at 0:00
perhaps you are trying for string.Format(thingyouwanttoformat)? — iGanja
– iGanja, Commented Apr 23, 2013 at 0:19
Parse is generally used for making a string into a number, date, collection of smaller strings etc. Format is generally used for making something into a string. This applies both to words in sentences and to the functions you call. In your case all you seem to need is iteration.ToString() — Kate Gregory
– Kate Gregory, Commented Apr 23, 2013 at 13:27

Rob Fonseca-Ensor · Accepted Answer · 2013-04-23 00:17:23Z

Parsing is when you turn a string into a thing. Formatting is the opposite of parsing, and in C# you can format an int by calling .ToString() on it. If you're concatenating strings, then you can even leave this method call off, so your code probably becomes

if (!ValidMenuOption){ string errorMsg = "\n\t Option must be "; int iteration = 1; while (iteration <=numAvailable) { errorMsg = errorMsg + iteration + ", "; iteration+=1; } errorMsg = errorMsg + "or 0"; Console.WriteLine(errorMsg); }

If you want to get fancy, you could have done it this way too:

if (!ValidMenuOption){ string errorMsg = "\n\t Option must be "+string.Join(", ", Enumerable.Range(1, numAvailable)) + " or 0"; Console.WriteLine(errorMsg); }

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