Question

C#File.Copy方法

假如说我想把
C:\Users\Y470\Desktop\新建文本文档.txt
复制到
C:\Users\Y470\Desktop\新建文件夹
里面 ，怎么写代码啊

Answer 1

将现有文件复制到新文件。
见msdn:http://msdn.microsoft.com/zh-cn/library/c6cfw35a.aspx

追问

不好意思啊，我忘举例子问了

追答

string path1,path2;
path1="C:\Users\Y470\Desktop\新建文本文档.txt ";
path2="C:\Users\Y470\Desktop\新建文件夹 ";
try
{
File.Copy(path1, Path.Combine(path2, Path.GetFileName(path1)); //将path1复制到path2目录下，文件名相同。
//不允许覆盖同名文件，否则会抛出异常。但是，可以使用file.copy的另一个重载版本:
//File.Copy(path1, Path.Combine(path2, Path.GetFileName(path1), true)，这就可以覆盖掉同名文件了。
}
catch(Exception)
{
}

Answer 2

string path = @"c:\temp\MyTest.txt";
string path2 = path + "temp";

try
{
using (FileStream fs = File.Create(path)) {}
// Ensure that the target does not exist.
File.Delete(path2);

// Copy the file.
File.Copy(path, path2);
Console.WriteLine("{0} copied to {1}", path, path2);

// Try to copy the same file again, which should fail.
File.Copy(path, path2);
Console.WriteLine("The second Copy operation succeeded, which was not expected.");
}

catch (Exception e)
{
Console.WriteLine("Double copying is not allowed, as expected.");
Console.WriteLine(e.ToString());
}
这一段代码， 看懂了吗？

追问

不好意思啊，我忘举例子问了

Answer 3

string path1,path2;
path1="C:\Users\Y470\Desktop\新建文本文档.txt ";
path2="C:\Users\Y470\Desktop\新建文件夹 ";
File.Copy(path1,path2);