CODEWITHSUNDEEP
c#.netcasting
Premanshu
Premanshu

Reputation: 626

convert from int to double

I have an integer (representing seconds) which I'm converting to hours by dividing by 3600. I then store the value in a property (type int). If the value contains a decimal point, I convert it by casting. However, when I try to assign the value to the property, I get an error: "Cannot implicitly convert type 'decimal' to 'int'." Here's my code:

var p = ((Hours.Duration) / 3600.0);
(Hours.Duration) = p;

However,

Hours.Duration =  (Hours.Duration) / 3600

works fine, and rounds to an int. What am I doing wrong?

Upvotes: 0

Views: 2885

Answers (4)

Darren Broderick DBro
Darren Broderick DBro

Reputation: 341

You can use this code:

int vIn = 0;
double vOut = Convert.ToDouble(vIn);

Here is a very handy convert data type webpage for those of others: Convert decimal to int in C#

Upvotes: 0

Ivo Peterka
Ivo Peterka

Reputation: 31

Don't define p as decimal. And the question is, if you want to include also partial hour (e.g. if the result for 4000/3600 would be 1 or 2). So you can write directly

Hours.Duration /= 3600;

or if you want count also partial hour

Hours.Duration = Hours.Duration / 3600 + ((Hours.Duration % 3600 > 0)?1:0);

or if you want correct rounding up

Hours.Duration = Hours.Duration / 3600 + ((Hours.Duration % 3600 >= 1800)?1:0);

Upvotes: 0

Zohaib
Zohaib

Reputation: 7116

decimal p = ((Hours.Duration) / 3600);
(Hours.Duration) = p;

you are getting error because p is decimal and Hours.Duration is integer, You cannot assign decimal to int without explicit casting.

(Hours.Duration) = (int)p;

If Hours.Duration is integer, 3600 is also integer, then there will be an integer division, that is your decimal value will be lost. e.g. in integer division 7/2 =3. If you want the answer to be 3.5, then you need to have atleast one decimal number in the division i.e 7.0/2 = 3.5 OR 7/2.0 = 3.5.

Upvotes: 2

nc3b
nc3b

Reputation: 16220

Try:

Hours.Duration = Convert.ToInt32(p);

Upvotes: 1

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