Static HTML Web Part Properties

Syntax looks OK, but check the event log first. if there nothing in there add another static text web part to your page and print those in here :

ID: {% custommacro.GetID() |(identity)GlobalAdministrator%}<br>

Debug your macro to make sure it's returning the values you're expecting. It may be returning an empty string and not NULL which are different checks in your statement.

Hi Peter and Brenden .. Thanks for your quick reply ..

Yeah macro is returning empty string .. so, i changed the check to

Code {% !IfEmpty(custommacro.GetWorkerID()) |(identity)GlobalAdministrator%} 

but still expression is throwing error message in the event log

Error while evaluating expression: custommacro.GetPollWorkerID() |(user)sxzza|(hash)ef529c5cb5ebed31ae33b87a44789a8a4f60edf643ae3f3fe4e6e3f91e1339f6

System.InvalidOperationException: Sequence contains no elements

What does your full macro code look like?

It has a sql statement

Code public WorkerInfo GetWorkerID()
    {
        var ID = HttpContext.Current.Session["VidSession"].ToString();

        var sqlQuery = @" SELECT  WorkerID  FROM tblWorker  where Vid=" + ID;


        var setting = _databaseQueryer.ExecuteDatabaseQuery(connection => connection.QuerySingle<WorkerInfo>(sqlQuery));

            return setting;
    }

It doesn't look like you're registering your custom macro properly. Take a look at the documentation.

The above code is helperclass that is where i am getting the value .. below is the code where i am registering the macro

Code [MacroMethod(typeof(string), "Gets worker id", 1)]
     [MacroMethodParam(1, "value", typeof(string), "x")]
     public static string GetWorkerID(EvaluationContext context, params object[] parameters)
     {

       WokerIDHelper WorkerIDSetting = new WokerIDHelper();


    var settings = WorkerIDSetting.GetWorkerID().WorkerID;

    return settings.ToString();

}

Unless you've registered a namespace, simply use:

GetWorkerID()