Issue

Resolution

The following scrip was successfully used to rebuild all three forms.

This script is used to rebuild the default SharePoint forms if they have been removed/deleted or if the user has modified any of the .aspx pages.

Add-PSSnapin microsoft.sharepoint.powershell

$url = "enter site url"

$listname = "enter list name"
$web = get-spweb $url
$list = $web.lists[$listname]
$files = $list.rootfolder.files
 
#---------------------------- Delete Forms ----------------------
 
$form1 = $list.RootFolder.files | ?{$_.url -match "dispform.aspx"}
 
$form2 = $list.RootFolder.files | ?{$_.url -match "editform.aspx"}
 
$form3 = $list.RootFolder.files | ?{$_.url -match "newform.aspx"}
 
$form2.delete()
$form1.delete()
$form3.delete()
 
$list.update()
 
# --------------------------recreating --------------------------------
 
$editformurl = $list.RootFolder.ServerRelativeUrl + "/EditForm.aspx"
$dispformurl = $list.RootFolder.ServerRelativeUrl + "/DispForm.aspx"
$newformurl = $list.RootFolder.ServerRelativeUrl + "/NewForm.aspx"
 
$dispform = $files.add($dispformurl, [Microsoft.SharePoint.SPTemplateFileType]::FormPage)
$editform = $files.add($editformurl, [Microsoft.SharePoint.SPTemplateFileType]::FormPage)
$newform = $files.add($newformurl, [Microsoft.SharePoint.SPTemplateFileType]::FormPage)
 
$wpm = $editform.GetLimitedWebPartManager([System.Web.UI.WebControls.WebParts.PersonalizationScope]::Shared)
$wpm2 = $dispform.GetLimitedWebPartManager([System.Web.UI.WebControls.WebParts.PersonalizationScope]::Shared)
$wpm3 = $newform.GetLimitedWebPartManager([System.Web.UI.WebControls.WebParts.PersonalizationScope]::Shared)
 
$lfw1 = new-object ([Microsoft.SharePoint.WebPartPages.ListFormwebpart])
$lfw2 = new-object ([Microsoft.SharePoint.WebPartPages.ListFormwebpart])
$lfw3 = new-object ([Microsoft.SharePoint.WebPartPages.ListFormwebpart])
 
$ilist1 = [Microsoft.SharePoint.WebPartPages.IListWebPart]($lfw1)
$ilist2 = [Microsoft.SharePoint.WebPartPages.IListWebPart]($lfw2)
$ilist3 = [Microsoft.SharePoint.WebPartPages.IListWebPart]($lfw3)
 
$ilist1.ListId = $list.id
$ilist1.PageType = [Microsoft.SharePoint.PAGETYPE]::PAGE_EDITFORM;
 
$ilist2.ListId = $list.id
$ilist2.PageType = [Microsoft.SharePoint.PAGETYPE]::PAGE_DISPLAYFORM;
 
$ilist3.ListId = $list.id
$ilist3.PageType = [Microsoft.SharePoint.PAGETYPE]::PAGE_NEWFORM;
 
$wpm.AddWebPart($lfw1, "Main", 1)
$wpm2.AddWebPart($lfw2, "Main", 1)
$wpm3.AddWebPart($lfw3, "Main", 1)
 
 
$list.DefaultDisplayFormUrl = $dispformurl
$list.DefaultEditFormUrl = $editformurl
$list.DefaultNewFormUrl = $newformurl
 
$list.update()

# # ===================

Error Code