Type.IsAssignableFrom Truth Table

code.csx

Console.WriteLine("| `left` | `right` | `left.IsAssignableFrom(right)` |");
Console.WriteLine("| --- | --- | --- |");
var types = new[] {
  typeof(object),
  typeof(string),
};
foreach (var left in types) {
  foreach (var right in types) {
    Console.WriteLine($"| {left} | {right} | {left.IsAssignableFrom(right)} |");
  }
}

table.md

left	right	left.IsAssignableFrom(right)
System.Object	System.Object	True
System.Object	System.String	True
System.String	System.Object	False
System.String	System.String	True