Building a claims viewer webpart for SharePoint 2010

When running through the MSDN article – Claims Walkthrouhgh: writing claims providers for SharePoint 2010 – I noticed that it did not clearly showed how the webparts where build which showed the overview of the claims for a specific request. Reza pointed me in the correct direction by sending me the link to a post from Steve Peschka (a must read blog for people who work with SharePoint and claims) – Figuring out what claims you have in SharePoint 2010.

Some things you should know when you try to build a claims viewer webpart of your own:

• First download the Windows Identity Foundation SDK
• Read the basics about Claim Based Identity from the Microsoft Patterns & Practices group – A guide to Claims-based Identity and Access control

The code is actually pretty simple – you can use a Visual Web Part (new in 2010) or a standard webpart – here’s a snippet

IClaimsPrincipal cp = Page.User as IClaimsPrincipal;   
if (cp != null)  { 
  IClaimsIdentity ci = (IClaimsIdentity)cp.Identity;   
  foreach (Claim c in ci.Claims) {
       sb.Append(c.ClaimType + " " + c.Value + "<br>"); 
  }
} 

Have fun ….

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