>Dmitry;
>
>Have you found a solution to the problem? There is an example of something similar on page 218-226 of the O'Reilly ASP.NET Cookbook that might be of help.
>
>Tom

Tom,

Sorry for the delay in replying to your message, I was on vacation last week, away from UT. First, I don't have the book you mentioned so I can't see what they have as a solution.

However, the solution to my problem ended up being the following:

Since the _TextChanged() method does not return true or false and it does not stop the process of the page, I had to create a property to set On/Off.

private bool EquipmentVerified
{
   get
   {
      object o = ViewState["EquipmentVerified"];
      if ( o == null )
         return false;
      return ( bool ) o;
   }
   set { ViewState["EquipmentVerified"] = value; }
}

// In the TextChanged event set this bool.

txtEquipment_TextChanged
{
   EquipmentVerified = //whether or not it is verified.
}

// In the button click, check this bool
btnSubmit_Click
if ( EquipmentVerified )
{
   //the value is valid.
   //run insert or whatever.
}

The above solution (which I got on ASP.NET) works very well.