小编Ita*_*val的帖子

可以这样转换：

int x = 1;
string xString;
switch (x)
{
    case 1:
        xString = "1";
        break;
    case 2:
        xString = "2";
        break;
    default:
        xString = "default";
        break;
}
Console.WriteLine(xString);

进入这个：

int x = 1;
string xString = x switch
{
    1 => "1",
    2 => "2",
    _ => "default",
};
Console.WriteLine(xString);

但是，在多个情况下将 xString 的值设置为相同值而不为每种情况创建 lambda 行的语法是什么？

int x = 1;
string xString;
switch (x)
{
    case 1:
        xString = "1";
        break;
    case 2:
    case 4:
        xString = "even numbers";
        break; …