这段代码基本上是这样做的：
class Program
{
static void Main()
{
var propName = Nameof<SampleClass>.Property(e => e.Name);
Console.WriteLine(propName);
}
}
public class Nameof<T>
{
public static string Property<TProp>(Expression<Func<T, TProp>> expression)
{
var body = expression.Body as MemberExpression;
if(body == null)
throw new ArgumentException("'expression' should be a member expression");
return body.Member.Name;
}
}
（当然是3.5码…）
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