Evitar que internet explorer pida confirmación al ejecutar un componente ActiveX

La clase debe implementar la interfaz IObjectSafety.

Para compilarlo:

Ir a prompt de visual studio 2013 (abrirlo como administrador)

Si no hay una strong key, generarla con:
      sn -k keyImpresora.snk

cls
call "%VS120COMNTOOLS%..\Tools\vsvars32.bat"
csc /t:library Impresora.cs /keyfile:keyImpresora.snk
regasm Impresora.dll /tlb:ImpresoraNet.dll /codebase


Código C#

using System;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Threading;
using System.IO;
using System.Collections.Generic;

namespace X
{
[ComImport()]
[Guid("CB5BDC81-93C1-11CF-8F20-00805F2CD064")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IObjectSafety
{
[PreserveSig()]
int GetInterfaceSafetyOptions(ref Guid riid, out int pdwSupportedOptions, out int pdwEnabledOptions);

[PreserveSig()]
int SetInterfaceSafetyOptions(ref Guid riid, int dwOptionSetMask, int dwEnabledOptions);
}

public enum Estilo
{
Normal,
Bold,
Enlarged,
Condensed
}
public interface IImpresora
{
string Imprimir(string texto, string estilo);
void FormFeed();
void Log(string texto);
string Inicializar(string usuario);
void Agregar(string linea);
void Listar();
}

public class Linea
{
public string Texto {get; set;}
public string Estilo {get; set;}
}

[ProgId("X.Impresora")]
[ClassInterface(ClassInterfaceType.AutoDispatch)]
[ComVisible(true)]
public class Impresora : IObjectSafety
{
bool _fin = false;
string _pathImpresora = "";
List<Linea> lineas;

    private const int INTERFACESAFE_FOR_UNTRUSTED_CALLER = 0x00000001;
    private const int INTERFACESAFE_FOR_UNTRUSTED_DATA = 0x00000002;
    private const int S_OK = 0;

    [ComVisible(true)]
    public int GetInterfaceSafetyOptions(ref Guid riid, out int pdwSupportedOptions, out int pdwEnabledOptions)
    {
        pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;
        pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;
        return S_OK;
    }

    [ComVisible(true)]
    public int SetInterfaceSafetyOptions(ref Guid riid, int dwOptionSetMask, int dwEnabledOptions)
    {
        return S_OK;
    }

[ComVisible(true)]
public void Agregar(string linea)
{
var l = new Linea();

l.Texto = linea;

lineas.Add(l);
}

[ComVisible(true)]
public void Listar()
{
File.Delete(Environment.GetEnvironmentVariable("TEMP") + "\\outLog.txt");

foreach (var l in lineas)
{
var xx = "";

xx = l.Texto;

xx = xx.Replace((char)13 + "" + (char)10, "");

if (xx.Contains(Convert.ToChar(27) + "(s3B") || xx.Contains(Convert.ToChar(27) + "(s0B"))
{
//evito estas lineas porque hacen bloquear la impresora.
xx = "";
} else
{
xx = xx.Replace( Convert.ToChar(27) + "E" + "", (char)27 + "" + (char)69 + "");
}

Log(xx);
}

EjecutarComando("type %TEMP%\\outLog.txt > " + _pathImpresora);
}

[ComVisible(true)]
public string Inicializar(string usuario)
{
var archivo = @"c:\X_imp\" + usuario + @"\XframePrinter.properties";
var host = "";
var nombreImp = "";


if (File.Exists(archivo))
{
var f = new StreamReader(archivo);
while (!f.EndOfStream)
{
var linea = f.ReadLine();

if (linea.Contains("XframeConnectorService.PrinterDriver.drivers"))
{
var v = linea.Split('=');

host = v[1];
host = host.Substring(0, host.IndexOf(","));

}

if (host != "")
{
if (linea.IndexOf("XframeConnectorService.PrinterDriver." + host + ".port", StringComparison.OrdinalIgnoreCase) >= 0)
{
var v = linea.Split('=');
nombreImp = v[1].Replace("\\", "");
}
}
}
} else
Log("NO EXISTE ARCHIVO DE CONFIG");

var ret = "";

if (host != "" && nombreImp != "")
{
_pathImpresora = @"\\" + host + @"\" + nombreImp;
ret = "OK";
}
else
{
_pathImpresora = "";
ret = "ERROR";
}

if (ret == "OK")
lineas = new List<Linea>();

return ret;
}

private void EjecutarComando(string comando) {
ProcessStartInfo processInfo;
Process proc;
_fin = false;
processInfo = new ProcessStartInfo("cmd.exe", (Convert.ToString("/c ") + comando));
processInfo.CreateNoWindow = true;
processInfo.UseShellExecute = false;
processInfo.RedirectStandardError = true;
processInfo.RedirectStandardOutput = true;
processInfo.Verb = "runas";
proc = new Process();
proc.EnableRaisingEvents = true;
proc.StartInfo = processInfo;
proc.OutputDataReceived += OnOutputDataReceived;
proc.Exited += OnProcessExited;
proc.Start();
proc.BeginOutputReadLine();
while (!_fin) {
Thread.Sleep(1);
}

proc.Close();
}


private void OnProcessExited(object sender, EventArgs e) {
_fin = true;
}

private void OnOutputDataReceived(object sender, DataReceivedEventArgs e) {
}

[ComVisible(true)]
public void Log(string texto)
{
var f = new StreamWriter(Environment.GetEnvironmentVariable("TEMP") + "\\outLog.txt", true);

f.WriteLine(texto);

f.Close();
}
}
}

Fuente: http://stackoverflow.com/questions/5247430/signing-net-dll-used-as-activex-control

Invocar metodos de un objeto COM desde una página web con javascript - con ejemplo de impresion (call simple ActiveX object installed on the client)

Para compilarlo:

Ir a prompt de visual studio 2013 (abrirlo como administrador)

Si no hay una strong key, generarla con:
      sn -k keyImpresora.snk

cls
call "%VS120COMNTOOLS%..\Tools\vsvars32.bat"
csc /t:library Impresora.cs /keyfile:keyImpresora.snk
regasm Impresora.dll /tlb:ImpresoraNet.dll /codebase


Impresora.cs

using System;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Threading;
using System.IO;
using System.Collections.Generic;

namespace X
{
public enum Estilo
{
Normal,
Bold,
Enlarged,
Condensed
}
public interface IImpresora
{
string Imprimir(string texto, string estilo);
void FormFeed();
void Log(string texto);
string Inicializar(string usuario);
void Agregar(string linea);
void Listar();
}

public class Linea
{
public string Texto {get; set;}
public string Estilo {get; set;}
}

[ClassInterface(ClassInterfaceType.AutoDual)]
public class Impresora : IImpresora
{
bool _fin = false;
string _pathImpresora = "";
List<Linea> lineas;

public void Agregar(string linea)
{
var l = new Linea();

l.Texto = linea;

lineas.Add(l);
}

public void Listar()
{
var estilo = "normal";
var textoOk = "";

File.Delete("c:\\temp\\outLog.txt");

foreach (var l in lineas)
{
var xx = "";

xx = l.Texto;

xx = xx.Replace((char)13 + "" + (char)10, "");

if (xx.Contains(Convert.ToChar(27) + "(s3B") || xx.Contains(Convert.ToChar(27) + "(s0B"))
{
//evito estas lineas
} else
{
// var xx = l.Texto.Replace( Convert.ToChar(27) + "(s3B", "");
// xx = xx.Replace( Convert.ToChar(27) + "(s0B", "");
xx = xx.Replace( Convert.ToChar(27) + "E" + "", (char)27 + "" + (char)69 + "");
}

Log(xx);
}

EjecutarComando("type c:\\temp\\outLog.txt > " + _pathImpresora);
/*
foreach (var l in lineas)
{
textoOk = "";

for (int i=0; i<l.Texto.Length; i++)
{
if ((int)l.Texto[i] == 12)
{
textoOk += "[FORM FEED]";
i++;
}

if ((int)l.Texto[i] == 27)
{
i++;

if ((int)l.Texto[i] == 69)
{
estilo = "bold";
i++;
} else if ((int)l.Texto[i] == 70)
{
estilo = "normal";
i++;
}
}

textoOk += l.Texto[i];
}

//Log(textoOk + " - " + estilo );
}
*/
}

public string Imprimir(string texto, string estilo)
{
if (estilo == "normal")
ImprimirLinea(texto, Estilo.Normal);

if (estilo == "bold")
ImprimirLinea(texto, Estilo.Bold);

if (estilo == "enlarged")
ImprimirLinea(texto, Estilo.Enlarged);

if (estilo == "condensed")
ImprimirLinea(texto, Estilo.Condensed);

return texto;
}

public void FormFeed()
{
//para que funcione el form feed hay que poner algun caracter antes y despues (en este caso, el signo de menos)
EjecutarComando("echo -" + (char)12 + "- > " + _pathImpresora);
}

public string Inicializar(string usuario)
{
var archivo = @"c:\X_imp\" + usuario + @"\framePrinter.properties";
var host = "";
var nombreImp = "";


if (File.Exists(archivo))
{
var f = new StreamReader(archivo);
while (!f.EndOfStream)
{
var linea = f.ReadLine();

if (linea.Contains("frameConnectorService.PrinterDriver.drivers"))
{
var v = linea.Split('=');

host = v[1];
host = host.Substring(0, host.IndexOf(","));

}

if (host != "")
{
if (linea.IndexOf("frameConnectorService.PrinterDriver." + host + ".port", StringComparison.OrdinalIgnoreCase) >= 0)
{
var v = linea.Split('=');
nombreImp = v[1].Replace("\\", "");
}
}
}
} else
Log("NO EXISTE ARCHIVO DE CONFIG");

var ret = "";

if (host != "" && nombreImp != "")
{
_pathImpresora = @"\\" + host + @"\" + nombreImp;
ret = "OK";
}
else
{
_pathImpresora = "";
ret = "ERROR";
}

if (ret == "OK")
lineas = new List<Linea>();

return ret;
}

private void ImprimirLinea(string texto, Estilo estilo)
{

//(char)27 + (char)15 ---------------- condensado on
//(char)18 --------------------------- condensado off
//(char)27 + (char)87 + (char)49 ----- enlarged on
//(char)27 + (char)87 + (char)48 ----- enlarged off
//(char)27 + (char)69 ---------------- bold on
//(char)27 + (char)70 ---------------- bold off


if (texto.Trim() == "")
{
texto = "(";
estilo = Estilo.Normal;
}
else
texto = " " + texto;

switch (estilo)
{
case Estilo.Normal:
EjecutarComando("echo" + texto + " > " + _pathImpresora);
break;
case Estilo.Bold:
EjecutarComando("echo " + (char)27 + (char)69 + texto + (char)27 + (char)70 + " > " + _pathImpresora);
break;
case Estilo.Enlarged:
EjecutarComando("echo " + (char)27 + (char)87 + (char)49 + texto + (char)27 + (char)87 + (char)48 + " > " + _pathImpresora);
break;
case Estilo.Condensed:
EjecutarComando("echo " + (char)27 + (char)15 + texto + (char)18 + " > " + _pathImpresora);
break;
}
}

private void EjecutarComando(string comando) {
ProcessStartInfo processInfo;
Process proc;
_fin = false;
processInfo = new ProcessStartInfo("cmd.exe", (Convert.ToString("/c ") + comando));
processInfo.CreateNoWindow = true;
processInfo.UseShellExecute = false;
processInfo.RedirectStandardError = true;
processInfo.RedirectStandardOutput = true;
processInfo.Verb = "runas";
proc = new Process();
proc.EnableRaisingEvents = true;
proc.StartInfo = processInfo;
proc.OutputDataReceived += OnOutputDataReceived;
proc.Exited += OnProcessExited;
proc.Start();
proc.BeginOutputReadLine();
while (!_fin) {
Thread.Sleep(1);
}

proc.Close();
}
 
private void OnProcessExited(object sender, EventArgs e) {
_fin = true;
}

private void OnOutputDataReceived(object sender, DataReceivedEventArgs e) {
}

public void Log(string texto)
{
var f = new StreamWriter("c:\\temp\\outLog.txt", true);

f.WriteLine(texto);

f.Close();
}
}
}

Version anterior:

Impresora.cs

using System;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Threading;
using System.IO;

namespace X
{
public enum Estilo
{
Normal,
Bold,
Enlarged,
Condensed
}
public interface IImpresora
{
string Imprimir(string texto, string estilo);
void FormFeed();
void Log(string texto);
}

[ClassInterface(ClassInterfaceType.AutoDual)]
public class Impresora : IImpresora
{
bool _fin = false;

public string Imprimir(string texto, string estilo)
{
if (estilo == "normal")
ImprimirLinea(texto, Estilo.Normal);

if (estilo == "bold")
ImprimirLinea(texto, Estilo.Bold);

if (estilo == "enlarged")
ImprimirLinea(texto, Estilo.Enlarged);

if (estilo == "condensed")
ImprimirLinea(texto, Estilo.Condensed);

return texto;
}

public void FormFeed()
{
EjecutarComando("echo " + "ABC" + (char)12 + "ABC" + " > \\\\X00762\\EPSON1");
}

private void ImprimirLinea(string texto, Estilo estilo)
{

//(char)27 + (char)15 ---------------- condensado on
//(char)18 --------------------------- condensado off
//(char)27 + (char)87 + (char)49 ----- enlarged on
//(char)27 + (char)87 + (char)48 ----- enlarged off
//(char)27 + (char)69 ---------------- bold on
//(char)27 + (char)70 ---------------- bold off


if (texto.Trim() == "")
{
texto = "(";
estilo = Estilo.Normal;
}
else
texto = " " + texto;

switch (estilo)
{
case Estilo.Normal: 
EjecutarComando("echo" + texto + " > \\\\X00762\\EPSON1");
break;
case Estilo.Bold: 
EjecutarComando("echo " + (char)27 + (char)69 + texto + (char)27 + (char)70 + " > \\\\X00762\\EPSON1");
break;
case Estilo.Enlarged:
EjecutarComando("echo " + (char)27 + (char)87 + (char)49 + texto + (char)27 + (char)87 + (char)48 + " > \\\\X00762\\EPSON1");
break;
case Estilo.Condensed:
EjecutarComando("echo " + (char)27 + (char)15 + texto + (char)18 + " > \\\\X00762\\EPSON1");
break;
}
}

private void EjecutarComando(string comando) {
ProcessStartInfo processInfo;
Process proc;
_fin = false;
processInfo = new ProcessStartInfo("cmd.exe", (Convert.ToString("/c ") + comando));
processInfo.CreateNoWindow = true;
processInfo.UseShellExecute = false;
processInfo.RedirectStandardError = true;
processInfo.RedirectStandardOutput = true;
processInfo.Verb = "runas";
proc = new Process();
proc.EnableRaisingEvents = true;
proc.StartInfo = processInfo;
proc.OutputDataReceived += OnOutputDataReceived;
proc.Exited += OnProcessExited;
proc.Start();
proc.BeginOutputReadLine();
while (!_fin) {
Thread.Sleep(1);
}

proc.Close();
}
  
private void OnProcessExited(object sender, EventArgs e) {
_fin = true;
}

private void OnOutputDataReceived(object sender, DataReceivedEventArgs e) {
}

public void Log(string texto)
{
var f = new StreamWriter("c:\\temp\\outLog.txt", true);

if (texto.IndexOf('\f') >= 0)
f.WriteLine("FORM FEEED!!!!!!");
else
f.WriteLine(texto);

f.Close();
}
}
}

Tester.htm

<html>
<head>
<script language=JavaScript>
var imp = new ActiveXObject('X.Impresora');
alert(imp.Imprimir("Texto PRUEBA"));
</script>
</head>
 <body>
  <h1>Tester.htm</h1>
 </body>
</html>



Fuente: http://forums.asp.net/post/2204437.aspx