How to define and use generic classes and methods in C#?

In C#, generic classes and methods allow you to write more flexible and reusable code. Here is an example of how to define and use generic classes and methods.

Define a generic class.

public class GenericClass<T>
{
    private T _value;

    public GenericClass(T value)
    {
        _value = value;
    }

    public T GetValue()
    {
        return _value;
    }
}

Utilizing generic classes:

GenericClass<int> intGenericClass = new GenericClass<int>(10);
Console.WriteLine(intGenericClass.GetValue()); // 输出：10

GenericClass<string> stringGenericClass = new GenericClass<string>("Hello");
Console.WriteLine(stringGenericClass.GetValue()); // 输出：Hello

Define generic method:

public class GenericMethod
{
    public T FindMax<T>(T[] array) where T : IComparable
    {
        T max = array[0];
        foreach (T item in array)
        {
            if (item.CompareTo(max) > 0)
            {
                max = item;
            }
        }
        return max;
    }
}

Utilizing generic methods:

GenericMethod genericMethod = new GenericMethod();
int[] intArray = { 1, 2, 3, 4, 5 };
Console.WriteLine(genericMethod.FindMax(intArray)); // 输出：5

string[] stringArray = { "apple", "orange", "banana" };
Console.WriteLine(genericMethod.FindMax(stringArray)); // 输出：orange