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Delete a SharePoint list Field(Column) using PowerShell

Delete a SharePoint list Field(Column) using PowerShell

Hello folks,

The following is a code snippet from PowerShell to completely remove or delete a field in a SharePoint list. The code uses the GUID to find the field (column). I tested this with SharePoint 2013.

Approch #1

#Set-ExecutionPolicy RemoteSigned
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint")
  
Get-PSSnapin –Registered
Add-PSSnapin Microsoft.SharePoint.PowerShell 

#Variables
$SiteURL="xxxxxxxxx"
$ListName="News"
$ColumnName="WikiPlus"
 
#Get Internal Name of the columns
$web = Get-SPWeb $SiteURL
 
#Get the list
$list = $web.Lists.TryGetList($ListName)
 
if($List -ne $null)
{
    #Get the column 
    $column = $list.Fields[$ColumnName]
 
    if($column -ne $null)
    {
        #Reset column properties to allow delete
        $column.Hidden = $false
        $column.ReadOnlyField = $false
        $column.AllowDeletion = $true
        $column.Update()
 
        #Delete the column from list
        $list.Fields.Delete($column)
        write-host "Column has been deleted!" -f Green
    }
    else
     {
        write-host "Specified column name not found!" -ForegroundColor Red
     }
}


Approch #2
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#Source Help - http://dotnetfollower.com/wordpress/2012/07/sharepoint-how-to-delete-a-list-fieldcolumn-programmatically/
 
$web=Get-SPWeb "http://mySite/"
$list=$web.Lists.TryGetList("My List Name")
if ($list -ne $null) {
    foreach($column in $list.Fields){
        if ($column.Id -eq "[GUID]") {
            write-host -f green "Deleting column with Internal name as : " $column.InternalName
             
            if ($column.ReadOnlyField)
            {
                $column.ReadOnlyField = $false;
                $column.Update()
            }
 
            if ($column.Hidden)
            {
                $column.Hidden = $false;
                $column.Update()
            }
      
            if ($column.AllowDeletion -eq $null -or !$column.AllowDeletion.Value)
            {
                $column.AllowDeletion = $true
                $column.Update()
            }
      
            $column.Delete()
            $column.ParentList.Update()
 
        }
    }
}
else
{
    write-host "list is null"
}
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