CODEWITHSUNDEEP
powershellcsv
SP1
SP1

Reputation: 1202

Read Column data from CSV

I have a CSV file 

Name,Age,Data
Test,22,Yes
Test2,23,No
Test3,43,Yes

How can I process this file using PowerShell, so that I can replicate this functionality:

foreach(var HeaderName in CSV.HeaderName)
{
   //Sample value Name

   foreach(var data in HeaderColumn.Data)
   {
      //Do Something with data 
      //Sample values as we loop through will be
      //Test,Test2,Test3
   }
}

Where CSV.HeaderName should be having the values Name, Age, Data and HeaderColumn.Data will have the column data for Name, Age and Data as we process the headers.

Upvotes: 1

Views: 1302

Answers (1)

Ansgar Wiechers
Ansgar Wiechers

Reputation: 200503

The PowerShell equivalent of your pseudo code would be something like this:

$csv = Import-Csv 'C:\path\to\your.csv'

$headers = $csv | Get-Member -MemberType NoteProperty | select -Expand Name

foreach ($header in $headers) {
  foreach ($data in $csv.$header) {
    # do stuff with $data
  }
}

For better answers take a step back and describe the actual problem you're trying to solve instead of what you perceive as the solution.

Demonstration:

PS C:\> $csvfile = 'C:\temp\test.csv'
PS C:\> Get-Content $csvfile
Name,Age,Data
Test,22,Yes
Test2,23,No
Test3,43,Yes
PS C:\> $csv = Import-Csv $csvfile
PS C:\> $csv | Format-Table -AutoSize

Name  Age Data
----  --- ----
Test  22  Yes
Test2 23  No
Test3 43  Yes

PS C:\> $headers = $csv | Get-Member -MemberType NoteProperty | select -Expand Name
PS C:\> $headers
Age
Data
Name
PS C:\> foreach ($header in $headers) {
>>   foreach ($data in $csv.$header) {
>>     Write-Host $data
>>   }
>> }
>>
22
23
43
Yes
No
Yes
Test
Test2
Test3

Upvotes: 1

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