📅  最后修改于: 2023-12-03 14:44:00.971000             🧑  作者: Mango
The List Cast<> method in C# is a powerful feature that allows developers to convert or cast one list type to another. This method can save developers a considerable amount of time since it eliminates the need to create new lists and manually copy items from one list to another.
The syntax for List Cast<> in C# is as follows:
public static List<TResult> Cast<TResult>(this IEnumerable source);
Where source
is the original list and TResult
is the type to which the original list is being cast.
Suppose we have a list of integers and we want to cast it to a list of strings. We can accomplish this very easily using the List Cast<> method:
List<int> numbers = new List<int> { 1, 2, 3, 4, 5 };
List<string> strings = numbers.Cast<string>().ToList();
Here, we first create a new list of integers called numbers
. We then use the List Cast<> method to cast this list to a list of strings. Finally, we store the new list of strings in a variable called strings
.
Using the List Cast<> method in C# provides several benefits:
Time-saving: By using the List Cast<> method, developers can convert lists from one type to another without having to create new lists and manually copy items.
Type safety: Converting lists using the List Cast<> method ensures that the resulting list is of the specified type.
Improved readability: Using List Cast<> can improve the readability of code since it simplifies the process of converting lists.
In conclusion, the List Cast<> method in C# is a powerful feature that can help developers save time and improve their code's readability. This method provides type safety and can convert lists from one type to another with ease.