在vb.net中发布到网页(Win窗体，桌面，而不是ASP.net) [英] POST to webpage in vb.net (win forms, desktop, not ASP.net)

问题描述

我有各种PHP文件，这些数据被发布到其中(例如用户登录时的密码)如何从vb.net(Windows窗体的桌面应用程序，这与ASP.net无关)发布到这些PHP. )

I have various PHP files which data is Posted to (like the password when the user signs in) How can I post to these PHP from vb.net (a desktop application that is Windows Forms, this is not about ASP.net)

推荐答案

您可以使用WebClient类.您需要将Content-Type标头设置为application/x-www-form-urlencoded，然后使用UploadData方法. 该方法的文档包含一个简单的示例，基本上可以归结为对此:

You can use the WebClient class. You need to set the Content-Type header to application/x-www-form-urlencoded and then use the UploadData method. The documentation of that method contains a simple example, which basically boils down to this:

Dim myWebClient As New WebClient()
myWebClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded")

Dim responseArray = myWebClient.UploadData("https://...", "POST", Encoding.ASCII.GetBytes(postData))
Dim response = Encoding.ASCII.GetString(responseArray)

HTTP POST的维基百科页面包含有关必须如何处理POST数据的信息被编码:

The Wikipedia page of HTTP POST contains information of how the POST data must be encoded:

每个键值对之间用&"分隔字符，并且每个键都由一个'='字符与其值分隔.通过用'+'字符替换空格，然后对所有其他字符使用URL编码，可以对键和值进行转义.

Each key-value pair is separated by an '&' character, and each key is separated from its value by an '=' character. Keys and values are both escaped by replacing spaces with the '+' character and then using URL encoding on all other characters.

因此，您的postData变量可以这样填充(假设要发布的字段称为用户名和密码):

So, your postData variable can be filled like this (assuming that the fields you want to post are called Username and Password):

Dim postData = String.Format("Username={0}&Password={1}", _
  HttpUtility.UrlEncode(username), _
  HttpUtility.UrlEncode(password))

这篇关于在vb.net中发布到网页(Win窗体，桌面，而不是ASP.net)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！