如何爲Activator.CreateInstance設置字典大小？

Question

我想使用Activator.CreateInstance設置字典的初始大小，請問該語法是什麼？

var collection = Activator.CreateInstance(someDictionaryType) as IDictionary; 

Answer 1

如果你想叫一個Dictionary constructor with an int parameter representing capacity，傳遞一個object陣列的單個元素 - 大小：

var collection = Activator.CreateInstance(someDictionaryType, new object[] {123}) as IDictionary;