Is it possible to send a collection of ID's as a ADO.NET SQL parameter?

public void InactiveCustomers(IEnumerable<Guid> customerIDs)
{
    //...
    myAdoCommand.CommandText =
        "UPDATE Customer SET Active = 0 WHERE CustomerID in (@CustomerIDs)";
    myAdoCommand.Parameters["@CustomerIDs"].Value = customerIDs;
    //...
}

CREATE PROCEDURE SelectByIdList(@productIds xml) AS

DECLARE @Products TABLE (ID int)

INSERT INTO @Products (ID) SELECT ParamValues.ID.value('.','VARCHAR(20)')
FROM @productIds.nodes('/Products/id') as ParamValues(ID)

SELECT * FROM
    Products
INNER JOIN
    @Products p
ON    Products.ProductID = p.ID

Create procedure usp_DeactivateCustomers
    @inactive varchar(50) /*or whatever values are required to identify inactive customers*/
    AS
    UPDATE Customer SET c.Active = 0
    FROM Customer c JOIN tableB b ON c.CustomerID = b.CustomerID
    WHERE b.someField = @inactive

public void InactiveCustomers(string inactive)
{
    //...
    myAdoCommand.CommandText =
        "usp_DeactivateCustomers";
    myAdoCommand.Parameters["@inactive"].Value = inactive;
    //...
}