Question

I am trying to format a double in C# such that it uses the thousand separator, and adds digits upto 4 decimal places.

This is straight forward except that I dont want to have the decimal point if it is an integer. Is there a way to do this using the custom numeric format strings rather than an if statement of tenary operator?

Currently I have:

string output = dbl.ToString(dbl == (int)dbl ? "#,##0" : "#,##0.####");

Thanks

Answer 1

No, there is not any built-in format string for this. Your current solution is the best way to accomplish this.

MSDN lists both the standard numeric format strings and custom numeric format strings, so you should be able to see for yourself that none directly matches your needs.