Asp gridview rowupdating
Every one can use it to compare the new value with old ones.
After searching long and hard I found a great article that solved my issue.
A common way to use these collections is to HTML-encode the values supplied by the user before they are stored in the data source.
NET Grid View Tips and Tricks series, this post shows how to cancel the Update and Delete operation in an ASP. To cancel an update and delete operation, we will make use of the Row Updating and Row Deleting events.
This enables you to provide an event-handling method that performs a custom routine, such as canceling the update operation, whenever this event occurs.
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").
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.