C# FileStream异常处理以及委托

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;

namespace Stream类加深
{
public delegate void A(FileStream fileStream);
class Program
{
static void Main(string[] args)
{
String path=@"C:\Users\***\Desktop\abc.txt";
A a = B;
DoSomething(path, a);//用这个函数可以省略大量代码
/*用匿名委托也可以做
DoSomething(path,delegate(FileStream fileStream)
{
byte []datas={100,101,102,103,104,105,106,107,108};
fileStream.Write(datas, 0, datas.Length);
});
*/
}
public static void DoSomething(string path,A a)//不要忘记static
{
FileStream fileStream = new FileStream(path, FileMode.OpenOrCreate,FileAccess.ReadWrite, FileShare.ReadWrite);
try
{
a(fileStream);
}
catch(Exception e)
{
Console.WriteLine(e.Message);
}
finally
{
if (fileStream != null) fileStream.Close();
}
}
public static void B(FileStream fileStream)//不要忘记static
{
byte []datas={100,101,102,103,104,105,106,107,108};
fileStream.Write(datas, 0, datas.Length);
}
}
}