<p>How can I select multiple elements using a WHERE...IN... type of clause as in</p>
<pre><code>select * from orders where orderid in (1, 4, 5)
</code></pre>
<p>in LinqToSql? I'd prefer not to have a lambda expression since they scare me.</p>

LINQ has "Contains" which is like "IN" but expressed the other way round - an element isn't "in" a set, a set "contains" an element.
```
```
int[] validIds = { 1, 4, 5 };
var query = from order in db.Orders
            where validIds.Contains(order.Id)
            select order
```
```
This is more simply expressed (IMO) with a lambda though:
```
```
int[] validIds = { 1, 4, 5 };
var query = db.Orders.Where(order => validIds.Contains(order.Id));
```
```
I realise lambdas are "new" and therefore scary to some extent, but it's really well worth grabbing hold of them with both hands. They're lovely.