I found a way to set up proxy in webbrowser on stackoverflow.
How to set a proxy for Webbrowser Control without effecting the SYSTEM/IE proxy
public struct Struct_INTERNET_PROXY_INFO
{
public int dwAccessType;
public IntPtr proxy;
public IntPtr proxyBypass;
};
[DllImport("wininet.dll", SetLastError = true)]
public static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);
//to activate use like this strProxy="85.45.66.25:3633"
//to deactivate use like this strProxy=":"
public static void RefreshIESettings(string strProxy)
{
try
{
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));
}
catch (Exception ex)
{
//TB.ErrorLog(ex);
}
}
private void SomeFunc()
{
RefreshIESettings("1.2.3.4:8080");
//or RefreshIESettings("http://1.2.3.4:8080"); //both worked
//or RefreshIESettings("http=1.2.3.4:8080"); //both worked
System.Object nullObject = 0;
string strTemp = "";
System.Object nullObjStr = strTemp;
WebBrowser1.Navigate("http://willstay.tripod.com");
}
However, this code is a proxy setting for all web browsers. I have multiple web browsers in the form, and I want to proxy only one web browser among them.
Using proxy with WebBrowser and WebRequest, how to include username and password? And I found this, but it didn't help me.
Can I solve this problem if I create a custom usercontrol that can connect to a proxy and then inherit the webbrowser?
Any helpful information would be appreciated
