Question

c#泛型出错了

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;

namespace 创建泛型2
{
public class LinkedListNode1<T>
{
private T value;
public LinkedListNode1(T value)
{
this.value = value;
}
public T Value
{
get { return value; }
}
private LinkedListNode1<T> next;
public LinkedListNode1<T> Next
{
get { return next; }
internal set { next = value; }
}
private LinkedListNode1<T> prev;
public LinkedListNode1<T> Prev
{
get { return prev; }
internal set { next = value; }
}

}
public class LinkedList1<T> : IEnumerable<T>
{

private LinkedListNode1<T> first;
public LinkedListNode1<T> First
{
get { return first; }
}
private LinkedListNode1<T> last;
public LinkedListNode1<T> Last
{
get { return last; }

}
public LinkedListNode1<T> AddLast(T node)
{
LinkedListNode1<T> newnode = new LinkedListNode1<T>(node);
if (first == null)
{
first = newnode;
last = first;
}
else
{
last.Next = newnode;
last = last.Next;
}
return newnode;
}
public IEnumerator<T> GetEnumerator()
{
LinkedListNode1<T> current = first;
while (current != null)
{
yield return current.Value;
current = current.Next;
}
}
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
public static void Main(string[] args)
{
LinkedList1<int> list2 = new LinkedList1<int>();
list2.AddLast(1);
list2.AddLast(2);
list2.AddLast(5);
foreach (int i in list2)
{
Console.WriteLine(i);
}
}
}

}
错误说明：
1。错误 1 程序“E:\application\ConsoleApplication6\ConsoleApplication6\obj\Debug\ConsoleApplication6.exe”不包含适合于入口点的静态“Main”方法 ConsoleApplication6
2。错误 警告 2 “创建泛型2.LinkedList1<T>.Main(string[])”: 入口点不能是泛型的或属于泛型类型 E:\application\ConsoleApplication6\ConsoleApplication6\Program.cs 78 28 ConsoleApplication6

Answer 1

你不能把Main方法放到类LinkedList1里面
我将代码稍微改了下，在我这里VS2008里测试通过了

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;

namespace 创建泛型2
{
public class LinkedListNode1<T>
{
private T value;
public LinkedListNode1(T value)
{
this.value = value;
}
public T Value
{
get { return value; }
}
private LinkedListNode1<T> next;
public LinkedListNode1<T> Next
{
get { return next; }
internal set { next = value; }
}
private LinkedListNode1<T> prev;
public LinkedListNode1<T> Prev
{
get { return prev; }
internal set { next = value; }
}

}
public class LinkedList1<T> : IEnumerable<T>
{

private LinkedListNode1<T> first;
public LinkedListNode1<T> First
{
get { return first; }
}
private LinkedListNode1<T> last;
public LinkedListNode1<T> Last
{
get { return last; }

}
public LinkedListNode1<T> AddLast(T node)
{
LinkedListNode1<T> newnode = new LinkedListNode1<T>(node);
if (first == null)
{
first = newnode;
last = first;
}
else
{
last.Next = newnode;
last = last.Next;
}
return newnode;
}
public IEnumerator<T> GetEnumerator()
{
LinkedListNode1<T> current = first;
while (current != null)
{
yield return current.Value;
current = current.Next;
}
}
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
}
class Program
{
public static void Main(string[] args)
{
LinkedList1<int> list2 = new LinkedList1<int>();
list2.AddLast(1);
list2.AddLast(2);
list2.AddLast(5);
foreach (int i in list2)
{
Console.WriteLine(i);
}
Console.Read();
}
}
}

Answer 2

错误信息显示得很明白了。

你的Main函数是不能写在一个泛型类型里面的。

你可以另外建个类型
class Program
{
//....把Main放这里面
}