c# - Take 4 places after decimal for a double variable -

this question has answer here:

• limiting double 3 decimal places 8 answers
• truncate number of digit of double value in c# 10 answers

i dont want round want take 4 places after decimal.

example:

double = 0.00038;  

i want result

0.0003   // 8 discarded  

how can achieve that?

double result = math.truncate(10000 * something) / 10000;