c# - 如何以编程方式提取 AnonymousType？

Question

我想提取 AnoymousType，这是我的代码:

static void Main(string[] args)
{
    Extract(new { Name = "Yoza" });
    Extract(new [] { new { Name = "Yoza" }, new { Name = "Dhika" } });
}

private static void Extract(object param = null)
{
    if(param.GetType().IsArray)
    {
        // Do something to get everyname
        // Do Something to get value of variable "Name"
    }
    else
    {
        // Do Something to get a name
        // Do Something to get value of variable "Name"
    }
}

如果我不将该代码放在方法中，它会像这样工作:

        var dd = new { A = "Yoza" };
        var cc = new[] { new { A = "Yoza" } };

        String name = dd.A;
        name = cc[0].A;

问题是我想把它放在方法中。如何以编程方式提取 AnonympusType？

Answer 1

您可以选择使用反射 API 从对象中获取值，如下所示:

public class Program 
{
    public static void Main() 
    {
        Extract(new { Name = "Yoza" });
        Extract(new [] { new { Name = "Yoza" }, new { Name = "Dhika" } });
    }

    private static void Extract(object param = null) 
    {
        if (param.GetType().IsArray) 
        {
            var array = param as Array;
            foreach(var element in array) 
            {
                foreach(var item in element.GetType().GetProperties()) 
                {
                    Console.WriteLine(string.Format("{0}: {1}", item.Name, item.GetValue(element)));
                }
            }
        } 
        else 
        {
            foreach(var item in param.GetType().GetProperties()) 
            {
                Console.WriteLine(string.Format("{0}: {1}", item.Name, item.GetValue(param)));
                item.GetValue(param);
            }
        }
    }
}

Here正在使用 DOT NET FIDDLE。