<p>We have a few applications that use the same Linq 2 SQL DataContext.  One of those Apps wil do massive inserts (it's a convertor from an old system).  Is it possible to change the UpdateCheck of the TimeStamp column of each table at runtime ?  Only for this one app we'd like to set it to Never, all the other apps should have Always.</p>

AFAIK you can not change it (at least with simple means) at runtime, because it is auto-generated as attribute in the properties of the domain classes. E.g.
```
```
[Column(Name="ITM_CREATE_DATE", Storage="_ITM_CREATE_DATE", DbType="DateTime NOT NULL", UpdateCheck=UpdateCheck.Never)]
public System.DateTime CreationDate
```
```
A possible workaround (that I have never tried, so I don't know if it works) is to copy the
```
<DataContext>.designer.cs
```
code in your single project, make the changes in the copy and use it without the designer.