Double og decimal hvornår skal jeg bruge hvad

Her er nogle guidelines for det:
A double has a range of about 5.0 x 10–324 to 1.7 x 10308, and a precision of 15 to 16 digits. double literals may have the suffix D or d. It, too, may have literals expressed with or without exponential notation:

double vectorMagnitude  = 8.2e127;
double accumulatedVolume = 7982365.83658341; 
            // also 7982365.83658341D
            //  or 7982365.83658341d

A new type not seen in any other language is the decimal type. The decimal type has 28 or 29 digits of precision and can range from 1.0 x 10–28 to about 7.9 x 1028. decimal literals can be specified with an M or m suffix. The trade-off between decimal and double is precision versus range. The decimal is the best choice when precision is required, but choose a double for the greatest range. The decimal type is well suited for financial calculations, as shown in the following example:

decimal annualSales = 99873582948769876589348317.95;

TIP

Use the C# decimal type for greater precision in financial calculations


taget herfra:
www.informit.com/articles/article.asp%3Fp%3D23211%26seqNum%3D7+c%23+difference+between+double+and+decimal&hl=da&gl=dk&ct=clnk&cd=1&client=firefox-a" target="_blank">http://209.85.135.104/search?q=cache:XBARQR4cnZ4J:www.informit.com/articles/article.asp%3Fp%3D23211%26seqNum%3D7+c%23+difference+between+double+and+decimal&hl=da&gl=dk&ct=clnk&cd=1&client=firefox-a

hvis det er penge saa
  brug decimal
ellers hvis det er noget med maale usikkerhed saa
  brug double

Tak for hjælpen begge to, smid nogle svar så er der point

svar :)

ok