Powershell convert string to number

Question

Ok  I am beginner - and lost with this   I have an Array where some drive data from WMI are captured    drivedata    Drives   select    Name  Kapazit  t GB   Expression     Kapazit  t     The Array has these values  2 drives      Kapazit  t GB  1 500    Kapazit  t GB  1 500    and just want to convert the 1 500 into a number 1500  I tried different suggestions I found here  but couldn t get it working   -Replace        and   int    doesn t work  I am not sure if regex would be correct and how to do this   For help many thanks in advance

User · Answer

Since this topic never received a verified solution, I can offer a simple solution to the two issues I see you asked solutions for.

Replacing the "." character when value is a string

The string class offers a replace method for the string object you want to update:

Example:

$myString = $myString.replace(".","")

Converting the string value to an integer

The system.int32 class (or simply [int] in powershell) has a method available called "TryParse" which will not only pass back a boolean indicating whether the string is an integer, but will also return the value of the integer into an existing variable by reference if it returns true.

Example:

[string]$convertedInt = "1500"
[int]$returnedInt = 0
[bool]$result = [int]::TryParse($convertedInt, [ref]$returnedInt)

I hope this addresses the issue you initially brought up in your question.

User · Answer

Simply casting the string as an int won t work reliably  You need to convert it to an int32  For this you can use the  NET convert class and its ToInt32 method  The method requires a string   strNum  as the main input  and the base number  10  for the number system to convert to  This is because you can not only convert to the decimal system  the 10 base number   but also to  for example  the binary system  base 2    Give this method a try    string  strNum    1 500   int  intNum    convert   ToInt32  strNum  10    intNum

User · Answer

I demonstrate how to receive a string  for example  quot -484876800000 quot  and tryparse the string to make sure it can be assigned to a long  I calculate the Date from universaltime and return a string   When you convert a string to a number  you must decide the numeric type and precision and test if the string data can be parse  otherwise  it will throw and error  function universalToDate    param        paramValue          retVal  quot  quot        if   paramValue                 epoch  datetime  1 1 1970           long  returnedLong   0          bool  result    long   TryParse  paramValue  ref  returnedLong          if   result -eq 1                         val  returnedLong 1000 0              retVal  epoch AddSeconds  val  ToString  quot yyyy-MM-dd quot                       else                retVal  null           return  retVal

User · Answer

Simply divide the Variable containing Numbers as a string by 1  PowerShell automatically convert the result to an integer       a   15   b   2   a    b --  152   But if you divide it before        a 1    b 1 --  17

User · Answer

It seems the issue is in  -f     Partition Size 1GB      If you want the value in MB then change the 1GB to 1MB

[string] Powershell: convert string to number

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