CODEWITHSUNDEEP
c#
SOF User
SOF User

Reputation: 7840

Decimal to string conversion issue

Math.Round((ClosePrice - OpenPrice), 5) = -0.00001

But When I convert it into tostring it gives "-1E-05"

Math.Round((ClosePrice - OpenPrice), 5).ToString() = "-1E-05"

Why this is so ? How can I get "-0.00001"

Upvotes: 4

Views: 736

Answers (3)

Alni
Alni

Reputation: 21

Every class inheriting from object (and therefore any class) has a .ToString() method. What it outputs depends on weather it was overwritten and if it was, how it was overwritten (i.e. what did the implementer want to give out as string. Its the same process you would go through if implementing a .ToString() method for one of your classes.

This is as to "Why" - the "How" has been answered by others.

Upvotes: 2

Sergey Kalinichenko
Sergey Kalinichenko

Reputation: 727027

ToString() chooses a format based on the value being formatted to achieve the most compact representation. If you would like to choose a specific format, you need to use the ToString(string format) overload instead. For example, if you call

Math.Round((ClosePrice - OpenPrice), 5).ToString("N5")

you will get "-0.00001" string as the result.

Upvotes: 4

Prafulla
Prafulla

Reputation: 1949

You can use format specifier as demonstrated on MSDN's Standard Numeric Format Strings 

double foo = -0.00001;
Console.WriteLine(foo.ToString("f5"));

Upvotes: 11

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