将自定义列表值复制到var或动态并循环？ [英] Copy custom list value to var or dynamic and loop through?

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 }

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