Using the generic SelectionList utility

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Creating a selection list controller for every time it is required can sometimes be tidious / monotonous.
So we have created a useful utility in the ENV.Utilities namespace called SelectionList.

In order to use it you need to:

1. Remove the previous call to the SelectShippers controller in the _Expand method in the code behind the view
2. Define a variable for the Shippers entity
3. Call the Show method of the SelectionList utility, sending it 4 parameters:

• The column from the controller, in this case the Orders.ShipVia
• The Shippers entity variable
• The code column, ShipperID
• The description column, CompanyName

The code will look like this:

private void txtShipVia_Expand()
{
-    new SelectShippers().Run(_controller.Shippers.ShipperID);
     var Shippers = new Models.Shippers();
     ENV.Utilities.SelectionList.Show(_controller.Orders.ShipVia, Shippers, Shippers.ShipperID, Shippers.CompanyName);
} 

This is the result:

• Exercise Using the Generic SelectionList

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