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Enable the Taxonomy feature in SharePoint with powershell

Enable-SPFeature -id 73EF14B1-13A9-416b-A9B5-ECECA2B0604C -Url http://site

Because the blog is also the author's own memory, I wrote here the ID of the feature that I use very often.

Why I need to activate features with powershell is because I like to develop agains Blank Site and to activate only the features that I need.

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ClientPeoplePicker in SharePoint 2013

Start using SharePoint 2013 I noticed that the way for selecting people or groups is changed.
The new way is simple – just ‘Enter name or email address’ without any icons for ‘Check Names’ or ‘Browse’. I guess that the PeoplePicker is changed but NO. PeoplePicker sitll has the same functionality as before.
There is a new control called ClientPeoplePicker.

How to use it:
1.Add this references

<%@RegisterTagPrefix="wssawc"Namespace="Microsoft.SharePoint.WebControls"Assembly="Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c"%>
2.Add the following control declaration


      <wssawc:ClientPeoplePicker Required="true" ValidationEnabled="true" ID="peoplePicker" runat="server" InitialHelpText="<%$Resources:wss,aclinv_PickerIntialHelperText%>" VisibleSuggestions="3" Rows="1" AllowMultipleEntities="false" CssClass

Using SharePoint Attachments' controls with elevated security

The scenario:  Create custom forms for Add/Edit/Delete items to a list which is not accessible by the regular users. The forms should support working with attachments.

The problem: The default SharePoint controls don’t work if the current user doesn’t have access to the list items.

The solution:Use custom code for generating the SharePoint default HTML so the out-of-the-box javascript works correct.

Explanations: 
The scenario occurs when some list need to be hidden form the users. The list has broken security inheritance and users can't navigate directly to it.

Working with its fields requires crating web warts or application pages with appropriate controls on them and server-side code running under elevated privileges. The issue here is that the OOTB (out-of-the-box) controls for Attachments don't work if the user doesn’t have access to the related list item.

The OOTB controls are: AttachmentsField, AttachmentUpload, AttachmentButton. There is a lot of code how to use them so h…

The column name that you entered is already in use or reserved. Choose another name.

The problem: 
You want to create column with a specific name in SharePoint but SharePoint gives you the message "The column name that you entered is already in use or reserved. Choose another name."



Why this is a problem?
Because you need to create custom columns and content types using the default SharePoint interface.
And the business users have to see properly named columns - for example "Description", not "My Description".

Solution:
It is important to know something technical about SharePoint (versions Office 365, 2013, 2010):
 - it supports columns with same Display Names.
 - you can’t have columns with same Internal names

Let’s implement the following common scenario:
You are creating a SharePoint customization and you need the following column:
   Type: Multiple lines of text
   Internal Name: MyProjectDescription
   Display Name: Description

 Here is the correct way to achieve it:
1. Create the column MyProjectDescription.
This will create column with I…