Onrowupdating in gridview in asp net
For this situation, many developers use invisible columns (Hidden columns) in the gridview to identify that row. We can achieve the same functionality using Datakeys. A datakey represents the primary key field or field of a record that can uniquely identify it in a data-bound control. Row Index represents the index of the particular row.Many a times in our applications we use primary keys to get control of the particular record in the gridview. When I go to update the value in the row, the value returns blank/null.My guess is that I am not using the correct VB to retrieve the value from the dropdown list.
In the above code, I set two properties Show Edit Button and Show Cancel Button of Command Field.Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.Looks like you are binding the grid in the Page Load. Please add the below code in Page Load before binding the grid..In this example, I am going to retrieve values from categories table of Northwind database. Drag a Grid View into the Web Form and assign Data Key Names property with the primary key column i.e. In the gdview_Row Editing and gdview_Row Deleting event, we have used the below code to retrieve categoryid from datakey of Grid View, int catid = int. Hi, I have a menu maker program that you can add various menu items to an xml file.