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Because the Update Parameters collection contains a Control Parameter object that is bound to the selected value of the Drop Down List, the button that triggers the Update operation is enabled only after an employee is selected.
Raising an event invokes the event handler through a delegate.
However, it also pulls the entered value from the textbox when you are updating and sends it to your Object Data Source's Update Method.
Currently, Role ID and Employee ID are the only update parameters showing up during the Updating event because they are the only ones you have specified Bind for instead of Eval.
i have an object that has properties (userid,name,surname) i added just field userid and "name" on details view. i can i handle the object that objectdatasource creates to apply update parameters on?
i want to use updating event to initialy create my original user entity then objectdatasource will update name property on this original entity. on update process i can not handle object creation that update process will use.
This was occuring even though I had placed Old Values Parameter Format String="original_" or Old Values Parameter Format String="" within the Grid View's attributes.
Then simply have a boundfield on your detailsview with visible=false on it and everything should work properly.
The Eval method is read-only -- it pulls the data from the DB and prints it to the HTML output.
To get data out of your Edit Item Template and make it part of the Update operation, you have to do this: The Bind method is 2-way: when reading from the database, it acts just like Eval.
While I'm very happy for anything to be working after so much time, I still feel like this is a bad hack for this to work.
I have a hard time fathoming why this seemingly simple use of the Grid View on my part has turned out to be very complicated.