With our upcoming version of RadControls for ASP.NET AJAX (early November) you will be able to bind our grid even if the grid is in edit mode. RadGrid will locate automatically all built-in column editors (GridNumericColumn, GridDropDownColumn, GridDateTimeColumn, etc.) and you can get old/new values directly from the grid client-side API.
You can use client-side editing completely codeless with templates as well. The requirement here is to set ID for the control to be equal to desired data field.
<telerik:RadTextBox ID="CompanyName" runat="server" />
We have introduced also three new client-side methods for GridTableView to get new...