how to show the data in grid view ( or any tool to view)

Question

how to show the data in grid view ( or any tool to view data one by one after put the barcode is in textbox i need to show the data in grid after the data is shown ) i need to clear (textbox)after the data are shown in the grid view .again i enter the barcode in the (textbox) i need to show the previous data + current data

using asp.net c# language