Check current user is SharePoint Administrator

Question

Is it possible to check if the current account is a SharePoint administrator? The only way I can think of achieving this is by attempting to login to the https://tenant-admin.sharepoint.com and check if I get a 403.

I thought there might be a cleaner way of doing this? This if for SharePoint Online/Office 365

Answer 1

Try this:

using (var ctx = new ClientContext(webUri))
{
    var currentUser = ctx.Web.CurrentUser;
    ctx.Load(currentUser);
    ctx.ExecuteQuery();

    Console.WriteLine(currentUser.IsSiteAdmin);
}

Answer 2

REST API:

Use the below rest api to determine the current loggin user is site collection admin or not

https://<sharepointsiteurl>/_api/web/currentUser/issiteadmin

This returns the true or false value in xml format.

JS Format: Use the below SharePoint ecmaScript to identify the current user admin status,

function checkUserisSiteAdmin() {
    var clientContext = new SP.ClientContext();
    oUser = clientContext.get_web().get_currentUser();

    clientContext.load(oUser);
    clientContext.executeQueryAsync(
        Function.createDelegate(this, function() {
            var userInfo = '';
            userInfo +='LoginName: '+ oUser.get_loginName() +', SiteAdmin: '+ oUser.get_isSiteAdmin();            
            alert(userInfo.toString());
        }),
        Function.createDelegate(this, function(sender, args) {           
            alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
        }));
}
ExecuteOrDelayUntilScriptLoaded(checkUserisSiteAdmin, "sp.js");

Answer 3

In CSOM, you can execute the following line of code:

_spPageContextInfo.isSiteAdmin;

Example:

alert(_spPageContextInfo.isSiteAdmin);