I am building an Application based on a excel sheet, at a certain point the sheet uses

=ROUNDUP(701.25;-1) which is returned as 710… how do we do this in C#

I tried Math.Round that returns 701, If I try to use Math.Round() with -1 then i get this

Rounding digits must be between 0 and 15, inclusive.

Please help me out here.

Try this (you’ll need to cast the return value to `int`

if necessary):

```
public static double RoundUp(double value, int digits)
{
double pow = Math.Pow(10, digits);
return Math.Ceiling(value * pow) / pow;
}
```

This should give you the functionality defined here:

http://office.microsoft.com/en-gb/excel-help/roundup-HP005209242.aspx

### Answer：

use the below two methods.Which may help you

```
int RoundUp(int toRound)
{
return (10 - toRound % 10) + toRound;
}
int RoundDown(int toRound)
{
return toRound - toRound % 10;
}
```

Referenece

Rounding integers to nearest multiple of 10