<?xml version="1.0"?>
<ErrorDocumentation xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <ErrorName>CS9030</ErrorName>
  <Examples>
    <string>// CS9030: The left-hand side of an assignment cannot contain a null propagating operator
// Line: 15

public class Test1
{
	public class Test2
	{
		public System.EventHandler&lt;System.EventArgs&gt; E;
	}

	public Test2 test2 = new Test2 ();

	static void Main ()
	{
		new Test1 ()?.test2.E += null;
	}
}
</string>
    <string>// CS9030: The left-hand side of an assignment cannot contain a null propagating operator
// Line: 11

using System;

class MainClass
{
	public static void Main ()
	{
		System.AppDomain a = null;
		a?.AssemblyLoad += (sender, args) =&gt; Console.Write (args);
	}
}</string>
  </Examples>
</ErrorDocumentation>