将自定义列表值复制到var或动态并循环？

本文介绍了将自定义列表值复制到var或动态并循环？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

在我的objectdatasource我使用_selected事件从列表中获得一些值，该对象返回。

所以我使用 e.Returnvalue 。

protected void ObjTrailerList_Selected（object sender，ObjectDataSourceStatusEventArgs e） { dynamic details = e.ReturnValue; var d = e.ReturnValue;}

现在我想复制整个自定义列表值到var或动态n迭代。 如何做？我不想创建对象MovieTrailers列表并复制其中的值。

我的自定义列表是

public class MovieTrailers { public int？ TrailerId { get; set; } public string MovieName { get; set; } public string TrailerUrl { get; set; } }

解决方案

p> private static void TestDynamic（动态列表） { foreach（列表中的var项） { if（item是string） { string foo = item; //使用它作为字符串 Console.WriteLine（字符串是：{0}，foo）; } else { Console.WriteLine（item）; } } } static void Mian（） { //传递字符串列表 TestDynamic new List< string> {Foo，Bar，Baz}）; //传递匿名类的列表 TestDynamic（new List< dynamic> {new {Age = 25，BirthDay = new DateTime（1986，1,3）}}，new {Age = 0，BirthDay = DateTime.Now}}）; // TestDynamic（25）; //这将导致运行时在foreach行的异常} // output：字符串是：Foo 字符串是：Bar​​ 字符串是：Baz {Age = 25，BirthDay = 3/1/1986 00:00:00} {Age = 0，BirthDay = 23/6/2011 01:23:18}

In my objectdatasource i am using _selected event to get some value from the list which object returns.

So i am using e.Returnvalue.

protected void ObjTrailerList_Selected(object sender, ObjectDataSourceStatusEventArgs e) { dynamic details = e.ReturnValue; var d = e.ReturnValue;}

Now i want to copy entire custom list value to var or dynamic n iterate through. How to do? I don't want to create object List of MovieTrailers and copy the value in it.

my custom list is

public class MovieTrailers { public int? TrailerId { get; set; } public string MovieName { get; set; } public string TrailerUrl { get; set; } }

解决方案

private static void TestDynamic(dynamic list) { foreach (var item in list) { if (item is string) { string foo = item;//use it as string Console.WriteLine("The string is: {0}", foo); } else { Console.WriteLine(item); } } } static void Mian() { //pass a list of strings TestDynamic(new List<string> { "Foo", "Bar", "Baz" }); //pass a list of anonymous class TestDynamic(new List<dynamic> { new { Age = 25, BirthDay = new DateTime(1986, 1, 3) }, new { Age = 0, BirthDay = DateTime.Now } }); //TestDynamic(25);//this will cause exception at run time at the foreach line } //output: The string is: Foo The string is: Bar The string is: Baz { Age = 25, BirthDay = 3/1/1986 00:00:00 } { Age = 0, BirthDay = 23/6/2011 01:23:18 }