')' trying to pass a delegate error

I have an error but it only appears when i am trying to pass my reference to my delegate and i do not know why....Any help with this bug

Error 9 Invalid expression term ')'

public delegate void VendorDetailsClosing(object sender, FormClosingEventArgs e);
public VendorDetailsClosing OnVendorDetailsClosing;

Tracking.UI.MainWindows.VendorOrderLegDetailsForm.DisplayVendorDetails(this.FindForm(), (BHFreight.Tracking.BusinessObjects.VendorOrderLegDetail)_OrderLegDetail, VendorDetailsClosing _DetailsClosing);

Visual C#8

I don't know what this code is doing but for start, remove VendorDetailsClosing from last line, because you don't have to put the type of _DetailsClosing.

you are trying to run a method outside the class (technically on the global scope) - this wont work. you are declaring your delegate and event globally, so the next line (last line) should be placed on a button click or some other method