Force all decimal variable to 2 decimal places

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Hi,

I had few decimal variable and i want to forced all the value for that variable will always show me with 2 decimal places.
However, i fail to get value with 2 decimal places with Math.Round().

Example for my variable value:

C#

decimal value1 = 123.899m;
decimal value2 = 123;

decimal amount1 = Math.Round(value1, 2);
decimal amount2 = Math.Round(value2, 2);

While the result i get is as below:
amount1 = 123.9
amount2 = 123

How could i get the result like "123.90" and "123.00 "without change it to string format?

Posted 24-Nov-15 15:48pm

sandra_tay

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PIEBALDconsult 24-Nov-15 22:07pm

As Dave said; that's done at the presentation layer.

3 solutions

Solution 2

Quote:
However, i fail to get value with 2 decimal places with Math.Round().

No it don't fail.
123.90 = 123.9 and 123.00 = 123
It is the right way to work with values with 2 decimal places.

To see the 2 decimals, it is a matter of formatting the values when you print them.

Posted 24-Nov-15 17:50pm

Patrice T

Updated 24-Nov-15 21:20pm

v2

Comments

Maciej Los 25-Nov-15 2:26am

5ed!

Patrice T 25-Nov-15 3:19am

Thank you

Solution 3

As Dave Kreskoviak[^] mentioned in solution 1 and ppolymorphe[^] in solution 2, your requirement is to display numeric value with 2 decimal places.

Please, see:
Standard Numeric Format Strings[^]
Custom Numeric Format Strings[^]

Now, you're able to display almost any format you want ;)

Posted 24-Nov-15 20:23pm

Maciej Los

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Dave Kreskowiak · Accepted Answer · 2015-11-24T15:59:00

Solution 1

You don't do that. The presentation of two decimal places is only done on display to the user, not in your variables. Doing so introduces accuracy errors into your data over time.

Posted 24-Nov-15 15:59pm

Dave Kreskowiak

Comments

Maciej Los 25-Nov-15 2:18am

5ed!