Sharepoint: find out if current user belongs to specified group

Question

How can I find out programmatically if current user belongs to some group on sharepoint website?
I need it because I would like to show a different content for the users belonging to one group.

Answer 1

I stumbled upon your post because I have (IMHO) the exact same question, but the replies seem somehow not to match that. So I went on searching and found http://www.eggheadcafe.com/conversation.aspx?messageid=30460140&threadid=30420861:

SPWeb site = SPContext.Current.Web;
SPGroup managerGroup = site.Groups["SP_Project_Manager"];
bool isManager = site.IsCurrentUserMemberOfGroup(managerGroup);

As of 2013, according to s654m's comment, the signature seems to have changed:

bool isManager = site.IsCurrentUserMemberOfGroup(managerGroup.ID);

Answer 2

maybe this code sample post in the ASP.NET Forums helps.

A method you could use

/// <summary>
/// This private method get users by selected SPGroup object.
/// </summary>
/// <param name="group">SPGroup object</param>

private void UsersList(SPGroup group)
{
           foreach(SPUser singleUser in group.Users)
           {
                       foreach(SPRole singleRole in singleUser.Roles)
                       {
                                   _usersListCollection.Add(new UserListCollection(
                                   singleUser.LoginName,singleRole.Name,group.ParentWeb.Title));
                       }
           }
}

Good luck,
Henrik