C#：从 lambda 表达式获取链中的属性名称

使用 lambda 表达式从链中获取属性名称

csharp
public static string GetPropertyName(this Expression> propertyExpression)
{
    MemberExpression memberExpression = propertyExpression.Body as MemberExpression;
    if (memberExpression == null)
    {
        throw new ArgumentException("Expression is not a member access expression.", nameof(propertyExpression));
    }
    return memberExpression.Member.Name;
}

csharp
public class Person
{
    public string Name { get; set; }
    public Address Address { get; set; }
}
public class Address
{
    public string Street { get; set; }
    public string City { get; set; }
}
var person = new Person
{
    Name = "John Doe",
    Address = new Address
    {
        Street = "123 Main St",
        City = "New York"
    }
};

csharp
string name = person.GetPropertyName(p => p.Name); // 输出 "Name"
string street = person.GetPropertyName(p => p.Address.Street); // 输出 "Street"
string city = person.GetPropertyName(p => p.Address.City); // 输出 "City"