Steps:
  1. #Get site and web object
  2. $site = Get-SPSite -Identity "http://gauti.sharepoint.com"
  3. $web = $site.RootWeb
  5. #Assign fieldXML variable with XML string for site column
  7. $fieldXML = '<Field Type="DateTime"
  8. Name="DateColumn"
  9. Description="Site Column created by using Powershell with format of date column."
  10. DisplayName="Date Column"
  11. StaticName="DateColumn"
  12. Group="Test Site Columns"
  13. Hidden="FALSE"
  14. Required="FALSE"
  15. Sealed="FALSE"
  16. ShowInDisplayForm="TRUE"
  17. ShowInEditForm="TRUE"
  18. ShowInListSettings="TRUE"
  19. ShowInNewForm="TRUE"></Field>'
  21. #Output XML to console
  22. write-host $fieldXML
  24. #Create site column from XML string
  25. $web.Fields.AddFieldAsXml($fieldXML)
  28. #Dispose of Web and Site objects
  29. $web.Dispose()
Run the script and check the sharepoint site column created successfully.