如何使用智能设备应用程序下载.cab和.exe文件? [英] How to Download a .cab and .exe file using Smart Device Application?

问题描述

try
            {
                HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(uri);
                httpRequest.Credentials = CredentialCache.DefaultCredentials;
                
                HttpWebResponse httpResponse = (HttpWebResponse)httpRequest.GetResponse();

                System.IO.Stream dataStream = httpResponse.GetResponseStream();
                System.IO.StreamReader streamReader = new System.IO.StreamReader(dataStream);

                String data = streamReader.ReadToEnd();
                
                byte[] buffer = new byte[data.Length];

                for (int i = 0; i < data.Length; i++)
                    buffer[i] = (byte)data[i];
                
                dataStream.Close();
                streamReader.Close();
                
                FileStream fs = new FileStream("filename.txt", FileMode.CreateNew);
                BinaryWriter bw = new BinaryWriter(fs);

                for (int i = 0; i < buffer.Length; i++)
                    bw.Write(buffer[i]);

                streamReader.Close();
                httpResponse.Close();
            }
            catch (Exception pe)
            {
                System.Windows.Forms.MessageBox.Show(pe.Message);
            }

这是代码工作，当下载文本，word和excel文件时，如果我正在下载.cab或.exe文件，则表示它显示异常值超出范围"实际上我想下载.cab文件和.exe文件，如何下载那个???
谢谢

This is code is working, when downloading a text,word and excel files, if i am Downloading a .cab or .exe files means it shows an exception "Value out of range" Actually i want to download the .cab files and .exe files, How to Download That???
Thanks

推荐答案

您不能将二进制文件转换为字符串，然后再将其写入文件.

you cannot convert binary files to string and then write it to file.

using (FileStream destination = File.Open(@"some.exe",FileMode.CreateNew))
{
dataStream.CopyTo(destination);
}

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