system.net

问题 I am writing a (rather simple :) networking application, and am testing it using localhost:27488 ( 127.0.0.1:27488 ). I am using a System.Net.Sockets.TcpClient for the connection, which takes a System.Net.IPAddress to specify the host... the only thing is, I can't figure out how to initialize the class with the right IP address. I went over the MSDN docs and it says it takes either a Byte(4) or an Int64 ( long ) for the address. The probelm is, when I initialize the IPAddress like this: Dim

问题 I am writing a (rather simple :) networking application, and am testing it using localhost:27488 ( 127.0.0.1:27488 ). I am using a System.Net.Sockets.TcpClient for the connection, which takes a System.Net.IPAddress to specify the host... the only thing is, I can't figure out how to initialize the class with the right IP address. I went over the MSDN docs and it says it takes either a Byte(4) or an Int64 ( long ) for the address. The probelm is, when I initialize the IPAddress like this: Dim

问题 I am writing a (rather simple :) networking application, and am testing it using localhost:27488 ( 127.0.0.1:27488 ). I am using a System.Net.Sockets.TcpClient for the connection, which takes a System.Net.IPAddress to specify the host... the only thing is, I can't figure out how to initialize the class with the right IP address. I went over the MSDN docs and it says it takes either a Byte(4) or an Int64 ( long ) for the address. The probelm is, when I initialize the IPAddress like this: Dim

问题 I want to send a mail using gmail id, my code is as here under, but its occurred error...please help me out of this issue. Imports System.Net Imports System.Net.Mail Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click MsgBox("This will send a mail...") Try Dim smtpserver As New SmtpClient() Dim mail As New MailMessage() smtpserver.Credentials = New Net.NetworkCredential("myname@gmail.com", "password") smtpserver.Port =

问题 I'm having a little trouble understanding the System.Net.IPAddress class, because I don't know where to look for a definition of what some of the properties are referring to. Specifically, what are: IPAddress.IsIPv6LinkLocal IPAddress.IsIPv6Multicast IPAddress.IsIPv6SiteLocal IPAddress.IsIPv6Teredo I will also happily accept an answer that points to a resource that explains these concepts. The MSDN site has proved insufficient. 回答1: IPAddress.IsIPv6LinkLocal A link-local address is an IP

问题 I want to create a simple http proxy server that does some very basic processing on the http headers (i.e. if header x == y, do z). The server may need to support hundreds of users. I can write the server in C# (pretty easy) or c++ (much harder). However, would a C# version have as good of performance as a C++ version? If not, would the difference in performance be big enough that it would not make sense to write it in C#? 回答1: You can use unsafe C# code and pointers in critical bottleneck

问题 i need some help with strange WebClient.UploadFileAsync()'s behaviour. I'm uploading a file to a remote HTTP Server (nginx) usind POST Method. The POST is processed trough a PHP script (which Address refers to). I have this simple code public void uploadFile(string filePath) { webClient = new WebClient(); webClient.Credentials = new NetworkCredential(Constant.HTTPUsername,Constant.HTTPPassword); webClient.Headers.Add("Test", TestKey); webClient.UploadProgressChanged += webClient

问题 i need some help with strange WebClient.UploadFileAsync()'s behaviour. I'm uploading a file to a remote HTTP Server (nginx) usind POST Method. The POST is processed trough a PHP script (which Address refers to). I have this simple code public void uploadFile(string filePath) { webClient = new WebClient(); webClient.Credentials = new NetworkCredential(Constant.HTTPUsername,Constant.HTTPPassword); webClient.Headers.Add("Test", TestKey); webClient.UploadProgressChanged += webClient

问题 I have what seems like it should be a simple question, but I can't find an answer to it anywhere. Given the following code: using System.Net.Http; ... StringContent sc = New StringContent("Hello!"); string myContent = ???; What do I need to replace the ??? with in order to read the string value from sc , so that myContent = "Hello!" ? .ToString just returns System.String, as does .ReadAsStringAsync . How do I read out what I've written in? 回答1: You can use ReadAsStringAsync() method, then get

问题 i'm trying to invoke a webapi with the new System.Net.WebClient and didnot found any special examples. The goal is simulate a traditional form post with some fields and a file. how can i do it using the System.Net.WebClient or where can i find some examples? thanks in advance 回答1: I think you need this: http://dzimchuk.net/post/uploading-a-file-over-http-in-net This is a very well written blog. See the last example. 回答2: There are a lot of examples if you do a fast google search, anyway, here