将客户端连接到服务器，并在C＃中从中获取文本文件

Question

I would like to connect automatically from a client to a server with an IP address in C# and get a text file from the server.

What would be the best way to achieve this ?

Answer 1

WebClient

The simplest way to do so is using "WebClient". See https://msdn.microsoft.com/en-us/library/system.net.webclient(v=vs.110).aspx

This class has a function called

public string DownloadString(string address)

You can use this to download the text file to memory. For more Methods (eg DownloadFile) visit the given link. Note: This Method might hang the window if executed in the UI-Thread while downloading the content. Either use a second Thread to do the stuff or use the asynchronous methods if possible.

In this case you would rather use this:

public Task<string> DownloadStringTaskAsync(string address)

More Information about Async: https://msdn.microsoft.com/en-us/library/dd537609(v=vs.110).aspx

Answer 2

It is easy to achieve using a WebRequest as follows.

// Create a request for the URL. 
WebRequest request = WebRequest.Create("http://yourdomain.com/textfile");
// Get the response.
WebResponse response = request.GetResponse();
// Get the stream containing content returned by the server.
Stream dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd();