I run into a problem of retrieving the value of Text control in one of the 
web forms. Any suggestions would be appreciated.

Here is the situation:
The page loads the data from database to each text fields on the form 
first.  The user then update the data, and click a Save button.  
Supposedly, it will take the new value and save it back to database.  For 
some reasons, the codes in the Save_Click method are unable to retrieve 
the new value.  The following is one of the C# statements:

arParams[0] = new SqlParameter("@CustomerID",txtCustomerID.Text);

The ReadOnly property of the control was set to "false", and there is no 
change to that property in the codes.

Notes:
1. The text controls are not binding to any data source column, but 
programmatically assigned the value instead.
2. The user was transferred from the other page with a QueryString which 
is used as data retrieving criteria by this page.

Thanks in advance for your help.

Michael J.