I have value of a field coming from server lfrom 1 to 100 which is to show progress of that field. But I checked that we can provide value to progress bar from 0 to1. How can i convert this. I did something like this but didn't work
Int Field = 12;
Decimal d = Field / 100;
Decimal dc = Math.Round(d,1); //to round to one decimal place
return dc;
This is returning 0. I tried this too:
double d = (double)(Progress / 100);
double dc = Math.Round(d, 1);
return dc;
This is also returning 0.
if you want maximum precision, you can convert an old range of values in a new range maintaining the ratio with this formula:
var OldRange = (OldMax - OldMin);
var NewRange = (NewMax - NewMin);
//i'm using round here has you requested, but its better to dont use it to achieve best results
var NewValue = Math.Round(((OldValue - OldMin) * NewRange) / OldRange) + NewMin, 1);
In your case, taking for example the number 12, this will be:
var OldRange = 99 //(100 - 1);
var NewRange = 1 //(1 - 0);
var NewValue = Math.Round(((12 - 1) * NewRange) / OldRange) + 0, 1);
Concluding the number 12 in the old range is 0.1 in the new range.
Or if you dont care that the old range starts from 1 and the new from 0, you can just divide by 100 and round the value:
Int field = 12;
Decimal d = field / 100;
Decimal dc = Math.Round(d,1); //to round to one decimal place
return dc;
Please note that in c# the divide operator is / and not % (wich is the modulus)
Turns out "/" operator doesn't work in C#
NO, "/" operator do work in C#.
You get a zero because Field / 100; is int/int, the result is 0;
Progress / 100 is the same, int/int get 0;
To make your code work. You can define the field as type Decimal :
Decimal Field = 12;
Decimal d = Field / 100;
Decimal dc = Math.Round(d, 1);
Or cast the 100 to Decimal:
int Field = 12;
Decimal d = Field /(Decimal)100;
Decimal dc = Math.Round(d, 1);
You can see detailed answer in these two threads: why-does-integer-division-in-c-sharp-return-an-integer-and-not-a-float
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