Webbrowser Method for blocking alert and confirm

Webbrowser shielding alert is implemented by redefinition of alert and confirm. Relatively simple. Code As follows:
Add com reference Microsoft HTML Object Library
Using Mshtml;

Private Void Webbrowser1_navigated ( Object Sender, webbrowsernavigatedeventargs E)
{
Ihtmlwindow2 win = (ihtmlwindow2) webbrowser1.document. Window. domwindow;
String S = @" Function confirm (){ " ;
S + = @" Return true; " ;
S + = @" } " ;
S + = @" Function alert (){} " ;
Win.exe cscript (S, " Javascript " );
}

(Provided by computer repair networkProgramSupported)

This is not what I did. Although the Code is the same, I write the code only when executing a specific task, and then execute this code + my own click code.

I found it on the Internet just now. There is another way to cure the problem. High people are everywhere. Below is the code, which is the inherited webbrowser and then the screen cheating showmessage

Using System;
Using System. Collections. Generic;
Using System. text;
Using System. Windows. forms;
Using System. runtime. compilerservices;
Using System. runtime. interopservices;

Namespace Test
{

Public Class Mywebbrowser: system. Windows. Forms. webbrowser
{
# Region Extendedwebbrowsersite
Class Extendedwebbrowsersite: webbrowser. webbrowsersite, unsafenativemethods. idochostshowui
{
Public Extendedwebbrowsersite (webbrowser host)
: Base (Host)
{
}
Void Unsafenativemethods. idochostshowui. showmessage ( Ref Unsafenativemethods. _ remotablehandle hwnd, String Lpstrtext, String Lpstrcaption, Uint Dwtype, String Lpstrhelpfile, Uint Dwhelpcontext, Out Int Plresult)
{
Plresult = 0 ;
// Todo: custom
}
Void Unsafenativemethods. idochostshowui. showHelp ( Ref Unsafenativemethods. _ remotablehandle hwnd, String Pszhelpfile, Uint Ucommand, Uint Dwdata, unsafenativemethods. tagpoint ptmouse, Object Pdispatchobjecthit)
{
// Todo: custom
}
}

Protected Override Webbrowsersitebase createwebbrowsersitebase ()
{
Return New Extendedwebbrowsersite ( This );
}
# Endregion
}

Public Class Unsafenativemethods
{
# Region Idochostshowui
[Structlayout (layoutkind. explicit, pack = 4 )]
Public Struct _ Midl_iwintypes_0009
{
// Fields
[Fieldoffset ( 0 )]
Public Int Hinproc;
[Fieldoffset ( 0 )]
Public Int Hremote;
}

[Structlayout (layoutkind. Sequential, pack = 4 )]
Public Struct _ Remotablehandle
{
Public Int Fcontext;
Public _ Midl_iwintypes_0009 U;
}

[Structlayout (layoutkind. Sequential, pack =4 )]
Public Struct Tagpoint
{
Public Int X;
Public Int Y;
}

[Comimport, GUID ( " C4D244B0-D43E-11CF-893B-00AA00BDCE1A " ), Interfacetype (( Short ) 1 )]
Public Interface Idochostshowui
{
[Methodimpl (methodimploptions. internalcall, methodcodetype = methodcodetype. runtime)]
Void Showmessage ([IN, comaliasname ( " Extendedwebbrowser2.unsafenativemethods. wirehwnd " )] Ref _ Remotablehandle hwnd, [in, exploralas (unmanagedtype. lpwstr)] String Lpstrtext, [in, financialas (unmanagedtype. lpwstr)] String Lpstrcaption, [in] Uint Dwtype, [in, financialas (unmanagedtype. lpwstr)] String Lpstrhelpfile, [in] Uint Dwhelpcontext, [comaliasname ( " Extendedwebbrowser2.unsafenativemethods. long_ptr " )]Out Int Plresult );
[Methodimpl (methodimploptions. internalcall, methodcodetype = methodcodetype. runtime)]
Void ShowHelp ([IN, comaliasname ( " Extendedwebbrowser2.unsafenativemethods. wirehwnd " )] Ref _ Remotablehandle hwnd, [in, exploralas (unmanagedtype. lpwstr)] String Pszhelpfile, [in] Uint Ucommand, [in] Uint Dwdata, [in] tagpoint ptmouse, [out, financialas (unmanagedtype. idispatch)] Object Pdispatchobjecthit );
}
# Endregion

}
}
This is copied directly. This editor does not have the code function, Khan... A little messy. But the screen cheating webbrowser's alert and confirm is good.

Either way, you can implement webbrowser screen cheating alert.