Identifying a custom indexer using reflection in C#

Question

I have a class with a custom indexer like so

public string this[VehicleProperty property]
{
  // Code
}

How can I identify the custom index

Answer 1

To get a known indexer you can use:

var prop = typeof(MyClass).GetProperty("Item", new object[]{typeof(VehicleProperty)});
var value = prop.GetValue(classInstance, new object[]{ theVehicle });

or you can get the getter method of the indexer:

var getterMethod = typeof(MyClass).GetMethod("get_Item", new object[]{typeof(VehicleProperty)});
var value = getterMethod.Invoke(classInstance, new object[]{ theVehicle });

if the class has only one indexer, you can omit the type:

var prop = typeof(MyClass).GetProperty("Item", , BindingFlags.Public | BindingFlags.Instance);

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