不上传能获取文件的大小吗?

Question

我想不上传就获取图片的大小,这个有可能吗?

Answer 1

给你这个例子,你看看..private void button2_Click(object sender, System.EventArgs e)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(this.textBox1.Text);
WebResponse response = request.GetResponse();
Stream stream =  response.GetResponseStream();
byte []buffer = new byte[1024];if( !response.ContentType.ToLower().StartsWith("text/") )
{
try
{
Stream outStream = new MemoryStream();
Stream inStream = response.GetResponseStream();int bufferLength;
do
{
bufferLength = inStream.Read(buffer,0,buffer.Length);
if(bufferLength>0)
outStream.Write(buffer,0,bufferLength);
}
while(bufferLength>0);outStream.Flush();
outStream.Seek(0,SeekOrigin.Begin);
inStream.Close();Image image = Image.FromStream(outStream);
outStream.Close();
MessageBox.Show("image :="+image.Width+"X"+image.Height);
image.Dispose();
}
catch (Exception ex)
{
MessageBox.Show("非图像格式\r\n"+ex.Message);
}
}
else
{
MessageBox.Show("非图像格式");
}
}