silverlight导入文件到WebService

        private void btnSelectFile_Click(object sender, RoutedEventArgs e)
        {
            OpenFileDialog openFile = new OpenFileDialog();
            openFile.Filter = "Excel文件|*.xls";
            if (openFile.ShowDialog() == true)
            {
                if (HtmlPage.Window.Confirm(string.Format("确定要导入“{0}”吗？", openFile.File.Name)))
                {
                    KeywordServices.KeywordServicesSoapClient client = SLHelpers.SoapClientFactory.CreateKeywordServicesSoapClient();
                    client.ImportExcelCompleted += new EventHandler<KeywordServices.ImportExcelCompletedEventArgs>(client_ImportExcelCompleted);
                    Stream stream = (Stream)openFile.File.OpenRead();
                    stream.Position = 0;
                    byte[] buffer = new byte[stream.Length + 1];
                    stream.Read(buffer, 0, buffer.Length);

                    client.ImportExcelAsync(buffer);
                }
            }
        }

        public bool ImportExcel(byte[] fileByte)
        {
            try
            {
                string filePath = "c:\\a.xls";
                FileStream stream = new FileStream(filePath, FileMode.Create);
                stream.Write(fileByte, 0, fileByte.Length);
                stream.Close();

                return true;
            }
            catch (Exception ex)
            {
                //TODO:写日志
                  return false;
            }
        }