关闭代理c#

Question

这是打开代理的代码：

Public struct Struct_INTERNET_PROXY_INFO 
{ 
    public int dwAccessType; 
    public IntPtr proxy; 
    public IntPtr proxyBypass; 
}; 

[DllImport("wininet.dll", SetLastError = true)] 
private static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);

private void RefreshIESettings(string strProxy) 
{ 
    const int INTERNET_OPTION_PROXY = 38; 
    const int INTERNET_OPEN_TYPE_PROXY = 3; 

    Struct_INTERNET_PROXY_INFO struct_IPI; 

    // Filling in structure 
    struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_PROXY; 
    struct_IPI.proxy = Marshal.StringToHGlobalAnsi(strProxy); 
    struct_IPI.proxyBypass = Marshal.StringToHGlobalAnsi("local"); 

    // Allocating memory 
    IntPtr intptrStruct = Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI)); 

    // Converting structure to IntPtr 
    Marshal.StructureToPtr(struct_IPI, intptrStruct, true); 

    bool iReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY, intptrStruct, Marshal.SizeOf(struct_IPI)); 
} 

private void SomeFunc() 
{ 
    RefreshIESettings("192.168.1.200:1010"); 

    System.Object nullObject = 0; 
    string strTemp = String.Empty; 
    System.Object nullObjStr = strTemp;
    axWebBrowser1.Navigate("http://willstay.tripod.com", ref nullObject, ref nullObjStr, ref nullObjStr, ref nullObjStr); 
}

但是我怎样才能关闭呢？？？ 谢谢

Answer 1

1. 更改 Internet 代理设置
2. 通过 C# 启用/禁用 IE 中的代理

Answer 2

看起来这个问题很久以前就被问过，但我花了最后两个小时研究这个问题，但找不到答案。最后我偶然发现了一些不起眼的网站，其中的代码可以工作。

再次尝试上面的代码，但不要指定实际的代理地址，而是使用 ":" 。

像这样调用 RefreshIESettings： RefreshIESettings(":")

Answer 3

像此代码块一样更改 RefreshIEsettings。
只需像这样调用这段代码即可。刷新IE设置（“：”）

public static void RefreshIESettings(string strProxy)
{
    const int INTERNET_OPTION_PROXY = 38;
    const int INTERNET_OPEN_TYPE_PROXY = 3;
    const int INTERNET_OPEN_TYPE_DIRECT = 1;

    Struct_INTERNET_PROXY_INFO struct_IPI;

    // Filling in structure 
    if (strProxy==":")
    {
        struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_DIRECT;
    }
    else
    {
        struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_PROXY;
    }
    struct_IPI.proxy = Marshal.StringToHGlobalAnsi(strProxy);
    struct_IPI.proxyBypass = Marshal.StringToHGlobalAnsi("local");

    // Allocating memory 
    IntPtr intptrStruct = Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI));

    // Converting structure to IntPtr 
    Marshal.StructureToPtr(struct_IPI, intptrStruct, true);

    bool iReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY, intptrStruct, Marshal.SizeOf(struct_IPI));

}