Both List and array are commonly used data structures in C#, and their similarities and differences are as follows:
Same point:
1. Both can be used to store a set of data.
2. Both elements can be accessed by index.
3. You can use the foreach loop to traverse elements.
difference:
1. List is a dynamic array, which can dynamically add or delete elements, while array is a static array, and the size cannot be changed once created.
2. List can store elements of different types, while array can only store elements of the same type.
3. List can use LINQ query statement, but array does not support it.
4. List is a reference type, while array is a value type.
5. The length of the List can be obtained through the Count property, and the length of the array can be obtained through the Length property.
In general, List is more flexible than array, but may be slightly inferior in terms of performance. Therefore, when choosing which data structure to use, you need to choose according to specific needs and scenarios.