Vista - Urgent

I want to know that I have created one custom activity and in that I
have created main class and with that also created designer class and
validator class but when I debug my solution the control goes inside
the validator class but does not goes inside the designer class so I
want to know that what is the entry point to debug the designer class
so my control goes inside that the class for sample I am providing its
syntax. From the main class i have to call the designer class before my
main class started so i cannot place a break point at that location
So please tell my what is the entry point of that class.
calling of the class syntax is followings :
[DesignerAttribute(typeof(LwSqlDbActivity.LwSqlDesigner))]
Thank You
and designer class is :
public sealed class LwSqlDesigner : ActivityDesigner
{
protected override void Initialize(Activity activity)
{
base.Initialize(activity);
this.DesignerTheme.BackColorStart = Color.White;
this.DesignerTheme.BackColorEnd =
ColorTranslator.FromHtml("#F9CB5A");
this.DesignerTheme.BackgroundStyle =
System.Drawing.Drawing2D.LinearGradientMode.Vertical;
this.DesignerTheme.BorderColor =
ColorTranslator.FromHtml("#BF8311");
}
protected override void PreFilterProperties(IDictionary
properties)
{
base.PreFilterProperties(properties);
UpdateSqlParametersList(properties);
UpdateDynamicProperties(properties);
}

private void UpdateSqlParametersList(IDictionary properties)
{
if (this.Activity != null && this.Activity is
LwSqlActivity)
{
LwSqlActivity activity = Activity as LwSqlActivity;
try
{
if (activity.ConnectionString != null &&
activity.ConnectionString.Length > 0)
{
SqlCommand command = activity.CreateCommand();
//Build SQL parameters list


if (activity.ConnectionString != null)
{
LwSqlHelper.GetTextParameters(command);
}
if (command.Parameters != null &&
command.Parameters.Count > 0)
{
for (int i = 0; i <
command.Parameters.Count; i++)
{
PropertyDescriptor prop =
new
LwSqlParameterPropertyDescriptor(command.Parameters[i].ParameterName,

LwSqlHelper.GetType(command.Parameters[i].SqlDbType),
new Attribute[] { new
ParenthesizePropertyNameAttribute(true) });
properties[prop.Name] = prop;

}
}
}
}
catch (InvalidOperationException)
{
Console.WriteLine("Operation is invalid");
}
}
}

private void UpdateDynamicProperties(IDictionary properties)
{

if (this.Activity != null && this.Activity is
LwSqlActivity)
{
LwSqlActivity activity = Activity as LwSqlActivity;
if (activity.ConnectionString == null)
{
properties.Remove("SourceTable");
}

}
}
protected override void
OnActivityChanged(ActivityChangedEventArgs e)
{
base.OnActivityChanged(e);
TypeDescriptor.Refresh(e.Activity);


}
}
Please reply as soon as possible