wince 下载文件，模拟器路径始终找不到

Jaslon 2012-05-30 04:55:24

string fromPath = "http://www.red-ambers.com/exchange/ad/vanke/1202/music/xingxing.mp3?h=e1ojmcenj8yZXl0f13AEsQ&e=1329124910"; //源文件路径
//目标路径
string downPath =Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase)+"\\test.mp3";
string downPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase);
private void button1_Click(object sender, EventArgs e)
{
try
{
MessageBox.Show(downPath);
//create web request/response
HttpWebResponse Response;
HttpWebRequest Request;
Request = (HttpWebRequest)HttpWebRequest.Create(fromPath);
Request.Headers.Add("Translate: f");
Request.Credentials = CredentialCache.DefaultCredentials;

Response = (HttpWebResponse)Request.GetResponse();

Stream respStream = null;
respStream = Response.GetResponseStream();

int FileSize = int.Parse(Response.ContentLength.ToString());
//int FileSize = int.Parse(System.Convert.ToInt64(Response.Headers["Content-Length"]).ToString());

//Do the Download
byte[] buffer = new byte[FileSize];
FileStream fs = File.Open(downPath, FileMode.Create, FileAccess.Write);
int length;
length = respStream.Read(buffer, 0, FileSize);
long writeLength = length;
while (length != 0)
{
fs.Write(buffer, 0, length);
length = respStream.Read(buffer, 0, FileSize);
writeLength += (long)length;
}
fs.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), "Error");

}

程序走到“FileStream fs = File.Open(downPath, FileMode.Create, FileAccess.Write);”这一步的时候，控制台就会出现如下错误，
在 System.IO.FileNotFoundException 中第一次偶然出现的“mscorlib.dll”类型的异常
在 System.IO.FileNotFoundException 中第一次偶然出现的“mscorlib.dll”类型的异常
在 System.UriFormatException 中第一次偶然出现的“System.dll”类型的异常

感觉应该是模拟器路径不对，但是改过来改过去，怎么地就是不好用，唉。。。。。

...全文