I'm creating a page where people can order several items from a list without having to press "edit" and "save" in between like you normally would in a gridview. The user writes down the quantity, and finally presses a "submit" button that saves the order.
I want the user to have a windows form (or excel) like eperience, so once the user puts in the quantity and moves on to the next item, either by TAB or by clicking on the TextBox, i make some calculations without the user beeing bothered with a full refresh or having to press a buton to execute the event, so I place the controls inside an UpdatePanel and use TextBox.TextChanged. The event runs code that calculates the sum for the row (price * quantity) and shows that in a column called "Sum", and updates a label in a fixed position with the new order total ("Total").
Any ideas on how to achieve this?
Right now I use a GridView with a templatefield for the Quantity and set the TextBox.TextChanged event to fire to make the calculations. The problem is that the focus then changes.
By using SmartNavigation or the ScriptManager.SetFocus I manage to retain focus on the TextBox that executed the Postback, but the user might have moved on to a textbox far down the gridview (thus causing the postback by leaving the previo
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