How to resolve the access denied error in SharePoint?

Question

This is the below code which I used to get the web reference using the title of the web site. The problem is the current user is not a member of all sub site so I'm getting access denied error.

User A have rights to: Web1, Web2 (no problem with code)

User B have rights to: Web1 (problem with code because he doesn't have rights to web2)

int projectid = GetProjectID(SPContext.Current.Web.Title, Url);

string projecttitle = SPContext.Current.Web.Title;

var nodename = currentWeb.ChildNodes.Cast<SiteMapNode>().FirstOrDefault(node =>
node.Title == projecttitle);

Answer 1

Use

SPWeb.GetSubwebsForCurrentUser

to get only subwebs current user has access to.

If you want to get all sites even if user doesn't have permissions to access them, use SPSecurity.RunWithElevatedPrivileges:

SPSecurity.RunWithElevatedPrivileges(delegate()
{
    using (SPSite site = new SPSite(web.Site.ID))
    {
    // implementation details omitted
    }
});

Answer 2

Use SPSecurity.RunWithElevatedPrevilizes. Then code will run with system account.

Thanks, Suresh Pydi.