event is raised when a row's Update button is clicked, but before the Grid View control updates the row.This enables you to provide an event-handling method that performs a custom routine, such as canceling the update operation, whenever this event occurs.A Grid View Update Event Args object is passed to the event-handling method, which enables you to determine the index of the current row and to indicate that the update operation should be canceled.To cancel the update operation, set the collections, if necessary, before the values are passed to the data source.I want to update my gridview, but rather than specifying the Update Parameters etc in the Grid View, I want to use my own code similar to the way I updated the Data Grid v1.1.I also want to make a call to a seperate data class to do this. I've a sample below, the Grid View Template is bound to Category Name.

I have searched the forum and seen many solutions but nothing has worked when I tried them out.

Data Bind(); // then bind the gridview Yes, you are correct that is the way to bind data in gridview, but in my problem, when I clicked the column that I want to edit, it display like textbox to enter a new value, when I type a new value in that textbox in the column gridview, I can not update it that column and can not go to another row to to edit another column value.

Description: An unhandled exception occurred during the execution of the current web request.

Save all or press "Ctrl S" and hit "F5" to run the page, the page will look as in the following image: Click on "Edit the Grid View", it will display Textboxes in each cell as in the following image: Edit the value(s) here and click on the Update link, it will update all the data or to remove it click on the "Delete" link above the image shown.

One note will be helpful for you, while describing Columns in Grid View if you are using a boundfield then create objects of the control using cells[index] in the rowupdateing event of Grid View, but if you are using controls itself like Label or textboxes etc then use Fincontrol("stringid").