C#: Generics syntax question

Question

在此类定义中要求T也必须IComparable的语法是什么？

public class EditItems<T> : Form

Answer 1

You can use just where T : IComparable as shown by other answers. I find it's typically more helpful to constrain it with:

public class EditItems<T> : Form where T : IComparable<T>

That says it has to be a type which is comparable with itself.

For one thing, for value types this avoids boxing. For another, it means you're less likely to try to compare two values which aren't really comparable.

Answer 2

public class EditItems<T> : Form where T : IComparable

Answer 3

public class EditItems<T> : Form where T : IComparable

Answer 4

使用类型约束 （请参见MSDN ）：

public class EditItems<T> : Form where T : IComparable

Answer 5

public class EditItems<T> : Form where T : IComparable
{...}