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If we move our mouse on to the variables, which hold the cell values, we can see the old value instead of new updated value (Refer the debugging Screen Shot at the Top). You're accessing so many items without null checks that it could be any number of things. Are you sure all of the controls exist in the cells you're specifying? 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.This might be useful if you are checking to see if the user actually changed a value, or just clicked the update button.
This enables you to provide an event-handling method that performs a custom routine, such as checking the results of the update operation, whenever this event occurs. First column containing the Check Box, second column containing a Label and Text Box for display and edit Contact Name of the Customer respectively and the third column containing a Label and Drop Down List for display and edit Country of the Customer respectively Here I am looping through the Grid View Rows and checking whether the Check Box is checked for that Row.