CODEWITHSUNDEEP
c#winformsgridview
Srihari
Srihari

Reputation: 2429

How to round decimal value in c#?

Am calculating small values in decimal, Expected result is = 345.00 but Result getting is = 345.0000

my code is this decimal temp= 6900 * ( 5 / 100);

temp = 345.0000 how to round this ? I want to show 345.00 ? whats my mistake here ? I tried this code Math.Round(tempdiscountprice, 2); also but it wont work here. Help me

Upvotes: 1

Views: 731

Answers (3)

Fredrik
Fredrik

Reputation: 2317

As user2864740 has pointed out above, the problem is not with your rounding, but with displaying the value as a string. Try:

 decimal temp = 345.0000m;
 String.Format("{0:0.00}", temp)

Upvotes: 2

to StackOverflow
to StackOverflow

Reputation: 124804

I don't think you're showing your real code. The following will give a result of 0, because (5 / 100) is evaluated using integer arithmetic:

decimal temp = 6900 * (5 / 100);
Console.WriteLine(temp.ToString()); // result is 0

If you use decimal, you will get the following:

decimal temp = 6900 * (5M / 100);
Console.WriteLine(temp.ToString()); // result is 345.00

However the decimal type does preserve trailing zeroes:

decimal temp = 6900 * (5.0000M / 100);
Console.WriteLine(temp.ToString()); // result is 345.0000

Preserving trailing zeroes like this was introduced in .NET 1.1 for more strict conformance with the ECMA CLI specification.

But there's nothing to stop you formatting the output with two decimals, e.g.:

decimal temp = 6900 * (5.0000M / 100);
Console.WriteLine(temp.ToString("N2")); // result is 345.00

Upvotes: 3

Soner Gönül
Soner Gönül

Reputation: 98868

I think you showing us wrong code because this doesn't get 345.00 or 345.0000 as a result. It always gets 0.

Your temp should be 0 because since you doing integer division, your 5 / 100 is always 0. That's why your temp will 6900 * 0 then it will be 0.

If you show us the right code, your problem looks like showing problem instead of rounding problem.

If you want to format your number as a string, take a look at;

Upvotes: 1

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