StreamReader - Class constructor with variable argument

Question

Good day. I create a console application that, when a variable changes, should save data to a new file. Constructor class:

StreamReader sr = new StreamReader(@"D:\New\1.txt");

Question : How to implement variable transfer to incoming parameters? As I see a solution that does not fit:

  StreamReader sr = new StreamReader(@"D:\New\{0}.txt", count); // Error

Thanks for the answer.

If such questions really were asked often - you would have found the answer without asking a question ...
@PavelMayorov discussion of the built-in library isn't it a faq?

Accepted Answer · 2017-12-05T11:00:06

For example:

 StreamReader sr = new StreamReader(string.Format(@"D\New\{0}.txt", count));

Or so:

 StreamReader sr = new StreamReader($@"D\New\{count}.txt");

And you seem to have lost a colon along the way.

1 answer 1