为什么使用 InternetSetCookie 在 WebBroser 控件上设置 cookie 的代码不起作用？

发布于 2024-12-17 06:59:42 字数 1129 浏览 0 评论 0原文

我完成这个示例是为了尝试理解为什么我根本不使用 WebBrowser 发送 cookie，这很简单，表单上有一个 WebBrowser，仅此而已：

namespace BrowserTest
{
    public partial class Form1 : Form
    {
        [DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern bool InternetSetCookie(string url, string name, string data);

        public static bool SetWinINETCookieString(string url, string name, string data)
        {
            return Form1.InternetSetCookie(url, name, data);
        }

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            // None of two works
            //SetWinINETCookieString("www.nonexistent.com", null, "dataToTest=thisIsTheData");
            SetWinINETCookieString("www.nonexistent.com", "dataToTest", "thisIsTheData");
            this.webBrowser1.Navigate("www.nonexistent.com");
        }
    }
}

这就是 Fiddler 所说的我要发送的内容：

在此处输入图像描述

看起来每个使用此功能的人都成功了，但我一生都无法让它工作。我在不同的电脑上尝试过，但也失败了。任何帮助都会很棒，谢谢。

原文

I've done this sample to try to understand why I'm not sending cookies at all with my WebBrowser, it's pretty simple, the form has a WebBrowser on it, that's all:

namespace BrowserTest
{
    public partial class Form1 : Form
    {
        [DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern bool InternetSetCookie(string url, string name, string data);

        public static bool SetWinINETCookieString(string url, string name, string data)
        {
            return Form1.InternetSetCookie(url, name, data);
        }

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            // None of two works
            //SetWinINETCookieString("www.nonexistent.com", null, "dataToTest=thisIsTheData");
            SetWinINETCookieString("www.nonexistent.com", "dataToTest", "thisIsTheData");
            this.webBrowser1.Navigate("www.nonexistent.com");
        }
    }
}

And that's what Fidller says I'm sending:

enter image description here

Looks like everyone using this function succeeds but for the life of me that I cannot get it working. I've tried at different computers and it fails there too. Any help will be great, thanks.

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夏了南城 2024-12-24 06:59:43

我自己刚刚遇到过这个问题。为了完整起见，您需要检查从 InternetSetCookie 返回的值，如果为 false，请调用 GetLastError，这会给您返回代码 87 - 无效参数。

[DllImport("kernel32.dll")]
public static extern uint GetLastError();

......

bool ok = SetWinINETCookieString("www.nonexistent.com", "dataToTest", "thisIsTheData");
if (!ok)
{
  int errorCode = GetLastError(); //this will return 87  for www.nonexistent.com
}

Just came across this myself.For completeness, you need to check the value returned from InternetSetCookie and if false, call GetLastError which would have given you a return code of 87 - invalid parameter.

i.e.

[DllImport("kernel32.dll")]
public static extern uint GetLastError();

......

bool ok = SetWinINETCookieString("www.nonexistent.com", "dataToTest", "thisIsTheData");
if (!ok)
{
  int errorCode = GetLastError(); //this will return 87  for www.nonexistent.com
}

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