Older/ReSharper20171CSharp/ThrowExpressions.cs (24 lines of code) (raw):

#pragma warning disable IDE0016 // Use 'throw' expression using System; namespace ReSharper20171CSharp { class ThrowExpressions { private string myValue; public ThrowExpressions(string value) { // Convert if null check to assignment with throw expression if (value == null) throw new ArgumentNullException(nameof(value)); myValue = value; } public void DoSomething(bool condition, out string answer) { // Convert if statement to ?: ternary expression, with throw statement if (condition) answer = myValue; else throw new InvalidOperationException(); } public void SetValue(string newValue) { // Use tab to complete .throw postfix template to create throw expression // myValue = newValue ?? ArgumentNullException.throw } } }