I'm using the grid to open an excel file and i want to be able to make changes to the cells, add some calculations if needed and before submitting the data i want to Update the data on the grid. For this purpose i have created a asp.net Button
calculateButton.Attributes["onmousedown"] = gridWeb.ClientID + ".updateData();";
What's appending is that the sheet looses all the data. How can i maintain the data in the sheet?