.net string类型的图片路径能复制图片么？

[caicainiao1]

string tp = "" + T_KQ_xs.Rows[0]["photo_path2"].ToString().Trim() + "";
if (tp != "")
{
FileUpload fl = new FileUpload();
tp = fl.FileName;
string file = Path.GetFileName(tp);
string tag = @"E:\SEA\Magzine\pic\" + file;
//创建文件夹
if (!System.IO.Directory.Exists(@"E:\SEA\Magzine\pic"))
{ // 目录不存在，建立目录
System.IO.Directory.CreateDirectory(@"E:\SEA\Magzine\pic");
}
System.IO.File.Copy(fl.FileName, tag);
file = tag;
}
else
{

}
------------------------------------------------------------------------------------------------------
tp\\是图片路径
我怎么不能复制图片啊？

[蝶恋花雨]

ile.Copy(源文件地址,目标地址, true（为true是覆盖同名文件）); 
/// <summary>
/// 从一个目录将其内容移动到另一目录
/// </summary>
/// <param name="p">源目录</param>
/// <param name="p_2">目的目录</param>
private void MoveFolderTo(string p, string p_2)
{
    //检查是否存在目的目录
    if (!Directory.Exists(p_2))
        Directory.CreateDirectory(p_2);
    //先来移动文件
    DirectoryInfo info = new DirectoryInfo(p);
    FileInfo[] files = info.GetFiles();
    foreach (FileInfo file in files)
    {
File.Copy(param name="p“,Path.Combine(p_2, file.Name）, true（为true是覆盖同名文件）); //复制文件
    }
   }

参考
http://blog.csdn.net/ou_yangpengfei/article/details/5874823
http://hi.baidu.com/%B6%E0%B0%D9%B6%E0%B6%C8%D0%D6%B5%DC/blog/item/b897a59a10424c056f068c63.html