c# - Raising events by calling delegates - why not by event name? -


i have looking @ old piece of code , cannot somehow understand following:

public event eventhandler namechanged; #endregion  #region protected void onnamechanged(eventargs args) /// <summary> /// raises namechanged event. /// </summary> /// <param name="args">event arguments.</param> protected void onnamechanged(eventargs args) {     eventhandler eh = this.namechanged;     if (eh != null)     {         eh(this, args);     } }

why event raised invocation of delegate? not call event (namechanged) usual?

edit: can see suggested on msdn: https://docs.microsoft.com/en-us/dotnet/standard/events/

whenever reference event, in fact copying invocation list local reference. doing that, make sure between checking validity of event eh != null , invoking event eh(this, args)eh's value wouldn't change (maybe different thread).

in c# 6, there new operator https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/operators/null-conditional-operators

you instead:

namechanged?.invoke(this, args);

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