通过一个图片的URL得到该图片的尺寸大小代码,CSharp代码库,德仔网

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【CSharp】通过一个图片的URL得到该图片的尺寸大小

作者:Dezai.CN / 发布于2013/10/18/ 477

使用MemoryStream，通过它我们可以比较轻松地达到目的


	protected void Button1_Click(object sender, 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");
	 }
	 }

	this.textBox1.Text存储的是URL。

试试其它关键字

　尺寸大小　

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