SPWeb.UserIsSiteAdmin Property

Gets a Boolean value that indicates whether the user has administrative rights on the website, including ManageSubwebs, ManagePermissions, and ManageWeb permissions.

Namespace:  Microsoft.SharePoint
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: Yes
Available in SharePoint Online

public bool UserIsSiteAdmin { get; }

Property Value

Type: System.Boolean
true if the user has administrative rights for the site collection; otherwise, false.