ASPxGridView with alphabetic pager

This example illustrates how to create a custom alphabetic pager.
In fact, Alphabetic pager is filtering by a column.
In this example we create a custom pager template, which contains anchors with alphabetic letters. After a click on an anchor the ASPxClientGridView.PerformCallback function is called with a parameter. On the server side, a new custom pager template is created in the ASPxGridView.CustomCallback event handler, and filtering by passed parameters takes place.