Rounding Off decimal to two places

Question

I have a decimal variable which contains values like 0.9 , 1.8 etc.Now ,i have to convert these values to like this 0.90 , 1.80. .Here is the code that i have tried to rounding off to two decimal places but it is giving me the same previous values only..

decimal Cost = noof * Rate;

Cost = Math.Round(Cost , 2);

Please help me ..

Answer 1

0.9 and 0.90 are the same value, you just want to display it differently.

You can use the following:

Cost.ToString("0.00")

Answer 2

Since the two numbers are exactly the same(data type and content), the only different between them are the way of displaying or the way of formatting numerical result.

You can format numeric results by using the String.Format method, or through the Console.Write or Console.WriteLine method, which calls String.Format . The format is specified by using format strings.

The link contains the supported standard format strings with description and examples.

And you can find more information related to formatting types there.

Answer 3

You can use the following,

double value = 0.9;
string formattedValue = value.ToString("N2");