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Check whether User exists in SharePoint Group or not

By Ashok Nalam on 21 May 2013 | Category: Sharepoint | Tagged: .NET groups 
In this snippet we will see how to check whether the user belongs to a SharePoint group or not
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The snippet covers how to check whether user belongs to a SharePoint group or not.


//checks user exists in SPGroup
public static bool IsUserExsistsInSPGroup(SPSite site, string groupName, SPUser spUser)
            bool userExsists = false;
            //Executes this method with Full Control rights even if the user does not have Full Control
                using (SPWeb spWeb = site.RootWeb)
                        if (CheckGroupExistsInSiteCollection(spWeb, groupName))
                            SPGroup spGroup = spWeb.Groups[groupName];
                            if (spGroup != null)
                                userExsists = spUser.Groups.Cast<SPGroup>().Any(g => g.Name.ToLower() == groupName.ToLower());
            return userExsists;
//checks group exists in site collection
private static bool CheckGroupExistsInSiteCollection(SPWeb web, string groupName)
  return web.SiteGroups.OfType<SPGroup>().Count(g => g.Name.Equals(groupName, StringComparison.InvariantCultureIgnoreCase)) > 0;
In order to call the method, use the below code

SPSite currentSite = SPContext.Current.Site;
SPUser currentUserName = SPContext.Current.Site.RootWeb.EnsureUser(SPContext.Current.Web.CurrentUser.LoginName);
bool isUserPartofGV = IsUserExsistsInGroup(currentSite,"Group Visitors",currentUserName)


Returns True/False based on user existence in SharePoint group.

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