幻想魚的幻想空間

回家在看~

http://big5.webasp.net/article/15/14889.htm

http://msdn.microsoft.com/en-us/library/ff650316.aspx

http://blog.tenyi.com/2006/09/csingleton-class.html

// Main function

class MainFunc

    {

        static void Main(string[] args)

        {

http://www.csharpwin.net/ddwstp/net/csharp/5723dr4312.shtml

簡單明瞭不囉嗦。這段威威..~"~ 

=====重點整理一下關於綁定自己設定的DataType方法====

<4>绑定对象集合，IList等。这个很是有用，在我们进行数据查询的时候，经常从数据库取出数据，为了方便操作，需要封装成对象，但是有的时候需要将这些对象以列表的形式显示出来，一种解决方案：对象转换为DataTable，另一种就是直接调用数据库。这两种方案，并不是很理想。而这里直接将对象集合直接绑定到数据显示控件，给我指明一条出路。其实，在PetShop4.0就是利用这一点，绑定ICollection或者IList。简单明了。

// Main function

class MainFunc
    {
        static void Main(string[] args)
        {
            string[] animals = new string[] { "Koala", "Spider", "Elephant" };
            wherepractice prac = new wherepractice();
            // get animals of StartName is "S"
            prac.detailWhere(animals);
            // get amimals of StartName is "E"
            prac.lambdaWhere(animals);
            // as above result, but different implement.
            prac.delegateImpleWhere(animals);
            Console.ReadLine();
            return;
        }
    }

// subClass

        public void detailWhere(string[] animals)
        {
            var q = from a in animals
                    where a.StartsWith("S")
                    select a;

            foreach (string s in q)
            {
                printString(s);
            }
        }
        public void lambdaWhere(string[] animals)
        {
            var q = animals.Where(a => a.StartsWith("E"));
            foreach (string s in q)
            {
                printString(s);
            }
        }
        public void delegateImpleWhere(string[] animals)
        {
            // To utilize "delegate" to implement lambda expression "Where".
            var q = animals.Where(
                delegate(string a){return a.StartsWith("E");}
                );
            foreach (string s in q)
            {
                printString(s);
            }
        }

This is a simple sample for Exit statement.

        static void Main(string[] args)
        {
            Program.correctGoto();
            Program.GotoInfiniteLoop();
            Program.falseGoto();
        }

         //This is a correct Goto statement method.
         static public void correctGoto()
        {
            for (int i = 0; i < 100; i++)
            {
                Console.WriteLine("{0}", i);
                if (i == 5)
                {
                    goto Exit;
                }
            }
            Exit: Console.WriteLine("Exit");
        }

        //If you put Exit tag before goto statement, it will cause infinite loop.p>
        static public void GotoInfiniteLoop()
        {
            Exit: Console.WriteLine("Exit");
            
            for (int i = 0; i < 100; i++)
            {
                Console.WriteLine("{0}", i);
                if (i == 7)
                {
                    goto Exit;
                }
            }
 
        }

         //It's a wrong method to use exit statement.
         static public void falseGoto()
        {
            for (int i = 0; i < 100; i++)
            {
                Console.WriteLine("{0}", i);
                if (i == 7)
                {
                    Exit: Console.WriteLine("Exit");
                }
                // this method can't jump from external into internal.
                goto Exit;
            }
        }