Round to specified int

This accepts values from a user that needs to show up in a intervals of some number. In this case, we will say intervals of 5.

Is there a better way to do this?

public static int RoundTo(this int value, int roundTo)
{
var midPoint = roundTo / 2.0;
var remainder = value % roundTo;
var result = remainder < midPoint
? (value - remainder) //round down
: (value + (roundTo - remainder)); //round up
return result;
}

Example

Console.WriteLine(7.RoundTo(5)); //5
Console.WriteLine(8.RoundTo(5)); //10

You could use the build-in Math.Round method:

public static int RoundTo(this int value, int roundTo)
{
return (int)Math.Round((double)value / roundTo) * roundTo;
}

Using this approach you can round not only ints:

public static double RoundTo(this double value, double roundTo)
{
return Math.Round(value / roundTo) * roundTo;
}

As for your approach, you don't need midPoint:

public static int RoundTo(this int value, int roundTo)
{
var remainder = value % roundTo;
var result = remainder < roundTo - remainder
? (value - remainder) //round down
: (value + (roundTo - remainder)); //round up
return result;
}