What is property bag in SharePoint 2010?

How do I retrieve values from a property bag and get/set the values using powershell?


5 Answers 5

$url= Read-Host 'Enter the site Name'
$site = New-Object Microsoft.SharePoint.SPSite($url)
$rootWeb = $site.RootWeb

Write-Host -foregroundcolor Green "The current Site"$rootWeb 

$value= Read-Host 'Enter the property name'
$Adminurl = "propertyName"

$rootWeb.AllowUnsafeUpdates = $true;
$Currentvalue = $rootWeb.Properties[$Adminurl]
Write-Host -foregroundcolor Green "The current value of the property bag is "$Currentvalue

if (!$rootWeb.Properties.ContainsKey($Adminurl))
         $rootWeb.Properties.Add($Adminurl, $value);
         $rootWeb.Properties[$Adminurl] = $value;


       $rootWeb.AllowUnsafeUpdates = $false;

$UpdatedValue =  $rootWeb.Properties[$Adminurl]
Write-Host -foregroundcolor Green "Value of the property bag is updated with " $UpdatedValue

if ($rootWeb -ne $null)

If ($site -ne $null)

Write-Host -foregroundcolor Green "Script has finished executing "

Using c#:

SPSite site = SPContext.Current.Site;
    using (SPWeb spWebRoot = site.RootWeb)

        // unsafe updates are required to be able to write to the property bag
        string key = "administrationurl";
        string myValue = "nikh";
        spWebRoot.AllowUnsafeUpdates = true;

        // you must check to see if the collection has a value in the assigned key already

        if (!spWebRoot.AllProperties.ContainsKey(key))

        spWebRoot.Properties.Add(key, myValue);


        spWebRoot.AllProperties[key] = myValue;

        // update the properties

        spWebRoot.AllowUnsafeUpdates = false;
  • When using Powershell : make sure to update the properties & allproperties()
    – Nikhil J
    Commented Oct 17, 2011 at 12:20

Share-Point property bags provide an easy-to-use storage mechanism for any serializable configuration data. Below is the sample code:

SPWeb web = SPContext.Current.Site.RootWeb;

//To store data in property bag


//To retrieve data stored in property bag                 
if (web.Properties.ContainsKey("TestKey"))
  string strResult=web.Properties["TestKey"];

We must ensure that any data we store in Property Bags is serializable. If you attempt to persist non-serializable types in property bags,the configuration database or the content database may get corrupted. So, it is recommended you use "Application Setting Manager" to store\retrieve values in property bags

  • "the content database may get corrupted" - really?
    – Ryan
    Commented Oct 14, 2011 at 8:45
  • The content database may get corrupted if you try to store non-serializable objects in property bags. Commented Oct 14, 2011 at 9:51
  • 1
    "Corrupted" is a very strong word you're implying something that simply will not happen. The property bag is just a key/value store and you can put whatever you want in whatever format you want. If your object is not serializable then you would have to provide a custom serialization scheme anyway.
    – Ryan
    Commented Oct 17, 2011 at 8:32
  • 3
    I think we should not put whatever we want in Property bags. I will recommend to stick to the guidelines from msdn here msdn.microsoft.com/en-us/library/ff649798.aspx. I agree that content DB will not corrupt so easily by a developer mistake. However, it may not be true for all kind of mistakes. So again it is better to follow "Patterns & Practices' recommended at msdn here msdn.microsoft.com/en-us/library/ff770300.aspx. As per the guidance "developers risk corrupting the configuration database or the content database if they attempt to persist non-serializable types.." Commented Oct 17, 2011 at 9:28
  • 1
    +1 @Amit. I stand corrected, though I don't know what manner of WTF is going on for Microsoft to flag this to be a possible issue!
    – Ryan
    Commented Oct 17, 2011 at 13:50

Property bag is basically properties attached on web site ,site collection , web application and farm level.

You can check out the codeplex tool here for more understanding - http://pbs2010.codeplex.com/

You also have a list of cmdlets from Powershell for property bag - http://collab.rdacorp.com/2010/05/sharepoint-2010-property-bag-cmdlet.html


To interact with the PropertyBags in code you simply refer to the object's Propeties member.

There are PropertyBags available for the SPFarm, SPWebApplication, SPSite, and SPWeb.

To set a value: site.Properties["PropertyName"] = "foo";

To read a value: string myProperty= site.Properties["PropertyName"].ToString();


One of the uses of SharePoint Manager 2010 (http://spm.codeplex.com/) is to view and update the property bags. This is nice in that it doesn't require a feature deployed to the environment so I use either this or the pbs2010 feature that @Deepu Nair recommended.

  • I think it is only useful if you know at design-time what you want to store in property bags. This is not the case most of the time when you implement complex business logic Commented Oct 14, 2011 at 14:30
  • Sorry, I misunderstood your question. I will post a different answer. Commented Oct 14, 2011 at 14:49

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