ActiveX ruins Validation events.

[zevikw]

I am using an ActiveX control in a .NET application which I put on a
form. I have another .NET control on that form that handles the
Validating event. The method that handles the Validating event, shows a
message box and sets e.Cancel = True. When I click any other control in
the form, the message box shows and the focus returns to the control
that handled the Validating event. The problem happens when I click on
the ActiveX control. The ActiveX control gets the focus and the focus
doesn't return to the validated control and no message box is
displayed. With a different ActiveX control the message was displayed,
but the focus didn't return to the validated control.

I reproduced the bug in a small application. In that application I
wrote an ActiveX in VB 6 that has an edit box. In a c# .NET application
I put on a form the ActiveX and 2 text boxes. One text box is validated
and is called textBoxValidate d and the other one is not vaildated and
is called textBoxRegular (the regular text box is used to demonstrate
regular validating behaviour) . In this form, the first time you click
on the ActiveX, it works ok, but the 2nd time it doens't work ok
Here is the code of the form:

"
using System;
using System.Drawing;
using System.Collecti ons;
using System.Componen tModel;
using System.Windows. Forms;
using System.Data;

namespace WindowsApplicat ion5
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows. Forms.Form
{
private AxProject1.AxUs erControl1 axUserControl11 ;
private System.Windows. Forms.TextBox textBoxValidate d;
private System.Windows. Forms.TextBox textBoxRegular;
/// <summary>
/// Required designer variable.
/// </summary>
private System.Componen tModel.Containe r components = null;

public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeCompo nent();

//
// TODO: Add any constructor code after InitializeCompo nent call
//
}

/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Disp ose();
}
}
base.Dispose( disposing );
}

#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeCompo nent()
{
System.Resource s.ResourceManag er resources = new
System.Resource s.ResourceManag er(typeof(Form1 ));
this.textBoxVal idated = new System.Windows. Forms.TextBox() ;
this.axUserCont rol11 = new AxProject1.AxUs erControl1();
this.textBoxReg ular = new System.Windows. Forms.TextBox() ;
((System.Compon entModel.ISuppo rtInitialize)(t his.axUserContr ol11)).BeginIni t();
this.SuspendLay out();
//
// textBoxValidate d
//
this.textBoxVal idated.Location = new System.Drawing. Point(448, 72);
this.textBoxVal idated.Name = "textBoxValidat ed";
this.textBoxVal idated.TabIndex = 2;
this.textBoxVal idated.Text = "validated text box";
this.textBoxVal idated.Validati ng += new
System.Componen tModel.CancelEv entHandler(this .textBox1_Valid ating);
//
// axUserControl11
//
this.axUserCont rol11.Enabled = true;
this.axUserCont rol11.Location = new System.Drawing. Point(128, 160);
this.axUserCont rol11.Name = "axUserControl1 1";
this.axUserCont rol11.OcxState =
((System.Window s.Forms.AxHost. State)(resource s.GetObject("ax UserControl11.O cxState")));
this.axUserCont rol11.Size = new System.Drawing. Size(320, 240);
this.axUserCont rol11.TabIndex = 3;
//
// textBoxRegular
//
this.textBoxReg ular.Location = new System.Drawing. Point(544, 152);
this.textBoxReg ular.Name = "textBoxRegular ";
this.textBoxReg ular.Size = new System.Drawing. Size(88, 20);
this.textBoxReg ular.TabIndex = 4;
this.textBoxReg ular.Text = "Regular text box";
//
// Form1
//
this.AutoScaleB aseSize = new System.Drawing. Size(5, 13);
this.ClientSize = new System.Drawing. Size(824, 470);
this.Controls.A dd(this.textBox Regular);
this.Controls.A dd(this.axUserC ontrol11);
this.Controls.A dd(this.textBox Validated);
this.Name = "Form1";
this.Text = "Form1";
((System.Compon entModel.ISuppo rtInitialize)(t his.axUserContr ol11)).EndInit( );
this.ResumeLayo ut(false);

}
#endregion

/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run (new Form1());
}

private void textBox1_Valida ting(object sender,
System.Componen tModel.CancelEv entArgs e)
{

MessageBox.Show ("DAN:(");
e.Cancel=true;
}

private void button1_Click(o bject sender, System.EventArg s e)
{
Application.Exi t();
}
}
}
"
Does any one know how to overcome this bug?

Thanks ,
Dan & Zeev.