In SharePoint 2010 once I had found a lot of errors in time of execution or publishing workflow processes: "(-1, -1) Type System.CodeDom.CodeBinaryOperatorExpression is not marked as authorized in the application configuration file.)". It happened right after installation of Windows updates on server.
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SharePoint list (SPList) has grown up to immense size and started to decrease performance. To solve this, I decided to cut this SPList to pieces – to create archives and save items there by year.

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I'm trying to remove all permissions from a list item in SharePoint 2010. There was a lot of permissions because of the "Limited access". I couldn't check all items because of the constraint of maximum selected items. This script is 100% compatible with SharePoint 2013 and SharePoint 2016.

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I used Advanced Workflow Actions for SharePoint Designer 2010 from iLoveSharePoint for Workflows in SharePoint site. And one of used by me activities was "Execute PowerShell Script Action".

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If you want to customize a NewForm for SharePoint list so, that users can add attachements in the same interface as other form fields, you should place control for adding attachments to a form. The problem is that this is not described and you really have to rewrite already half-prepared control.

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Snippet to render Attachments Row in SharePoint 2010 Custom Edit Form

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Here is the snippet of how to Create Folder in Document Library programmatically using the Object Model.  It can be used in console applications for loading documents or timer-jobs.

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I have copied exported site to another farm and tried to restore. After executing of cmd-let for restoring spweb (Import-SPWeb -Identity http://spdev/forums/ -Path D:\Backups\forums.bak) I've got an error:

Import-SPWeb : Could not find file 'C:\Users\spadmin\AppData\Local\Temp\3\b386a19c-48bd-4a3a-b019-129ca9be4c5e\ExportSettings.xml'.

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SPWeb object has 2 different properties for work with groups. There are Grops and SiteGroups. Inspite of the fact that they look very similar, they are different.

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Information about files in document libraries is strored in the table "AllDocs" of Site's content database. Of course, Microsoft doesn't allow to make queries to SharePoint databases directly. But I can't but agree with inserts and updates are not allowed, but select query in the worst case will make just some locks in database. So I guess that in some cases it's much better to execute select query than powershell script.

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