Forum programmazione

private string StringGetWebPage(String uri){
    const int bufSizeMax = 65536; // max read buffer size conserves memory
    const int bufSizeMin = 8192;  // min size prevents numerous small reads
    StringBuilder sb;
    try{
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        Stream responseStream = response.GetResponseStream();
        int length = (int)response.ContentLength;
        int bufSize = bufSizeMin;
        if (length > bufSize)
            bufSize = length > bufSizeMax ? bufSizeMax : length;
        byte[] buf = new byte[bufSize];
        sb = new StringBuilder(bufSize);
        while ((length = responseStream.Read(buf, 0, buf.Length)) != 0)
            sb.Append(Encoding.ASCII.GetString(buf, 0, length));

    }catch (Exception ex){
        sb = new StringBuilder(ex.Message);
    }
    return sb.ToString().Trim();
}