[转载代码] [PowerShell每日技巧]转换数字格式(20140305)

DAIC

Often, users need to format numbers and limit the number of digits, or add leading zeros. There is one simple and uniform strategy for this: the operator "-f"!

Let's make sure a number has leading zeros:

PS C:\> $number = 68 PS C:\> '{0:d7}' -f $number 0000068

This will produce a 7-digit number with leading zeros. Adjust the number after "d" to control the number of digits.

To limit the number of digits, use "n" instead of "d". This time, the number after "n" controls the number of digits:

PS C:\> $number = 35553568.67826738 PS C:\> '{0:n1}' -f $number 35,553,568.7

Likewise, use "p" to format percentages:

PS C:\> $number = 0.32562176536 PS C:\> '{0:p2}' -f $number 32.56 %

http://powershell.com/cs/blogs/tips/archive/2014/03/05/formatting-numbers-easily.aspx

DAIC

左侧补零的另外一种方式：
PS C:\> $number = '68'
PS C:\> $number.PadLeft(7, '0')
0000068

Batcher

# Dec to Hex
PS C:\> $number = 255
PS C:\> '{0:X0}' -f $number
FF

# Thousands Separators
PS C:\> $number = 1234567
PS C:\> '{0:n0}' -f $number
1,234,567

# Currency
PS C:\> $number = 35553568.67826738
PS C:\> '{0:c1}' -f $number
$35,553,568.7