CODEWITHSUNDEEP
c#formatting
Michael Z
Michael Z

Reputation: 3993

C# - Format float WITHOUT tail zeros

Is that possible in C# to format

4.52 float number to 4.52 string

and

4.520 float number to 4.52 string, i.e. omitting tail zeros?

EDIT: I think I've not accented the real problem. I need ONE pattern that conforms BOTH of the above examples!

Upvotes: 2

Views: 4511

Answers (4)

Raphael
Raphael

Reputation: 1857

Actually, you don't need a pattern. .NET always omits the tail zeros of float numbers, unless specified to do not.

So Console.WriteLine(4.520) would output 4.52, as would Console.WriteLine(4.52) or Console.WriteLine(4.520000000000), as Console.WriteLine(4.5) would output 4.5.

In the example above, the System.Console.WriteLine method will internally call ToString() (with no patterns) on your float number.

Also, if you're looking for something more specific, you can take a look at

http://msdn.microsoft.com/en-us/library/dwhawy9k(v=vs.71).aspx

for some more number format strings.

Upvotes: 2

Buh Buh
Buh Buh

Reputation: 7546

All of these result in "4.52":

string formatted = 4.52.ToString();
string formatted = 4.520.ToString();

Because that was too easy I wonder if maybe your float is really a string:

string formatted = "4.52".Trim('0');
string formatted = "4.520".Trim('0');

Upvotes: 0

James
James

Reputation: 82096

Assuming you want to omit any trailing 0's from your value, this should give you what you want:

ToString("0.####")

Otherwise you could do:

ToString("0.00##")

Upvotes: 7

Shai
Shai

Reputation: 25619

See this website for examples.

i.e

String.Format("{0:0.00}", 4.520);      // "4.52"

Upvotes: 4

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