However, I now have the need to update the formview. Update Item(), and then a Link Button control, and in both cases get a "missing event handler" error. Using the Link Button, I get the following: The Form View 'fv Edit Imp Rec' fired event Item Updating which wasn't handled. uri=spotify:artist:4Kfw TCNq T3g Xele8WP3s5b&size=detail&theme=light So for the past week or so I’ve had this looming issue hanging over my head that I would try to nail down in-between other issues that I swear was going to be the death of me.I knew whatever it was had to be something really simple that I kept overlooking and something that, when I finally figured it out, would be quite .A List View Select Event Args object is passed to the event handler, which enables you to determine the index of the item that was selected by the user.It also lets you indicate that the selection operation should be canceled.A Details View Mode Event Args object is passed to the event handler, which allows you to determine the new mode, to determine whether the mode change was a result of the user canceling an edit operation, or to cancel the mode change.
I was associating the event receiver to the custom list through Feature Activated on a feature receiver for my Event Receivers project.Description: An unhandled exception occurred during the execution of the current web request. Http Exception: The Form View 'fv Edit Imp Rec' fired event Item Updating which wasn't handled. On Item Updating(Form View Update Event Args e) 324 System. Please review the stack trace for more information about the error and where it originated in the code. Source Error: An unhandled exception was generated during the execution of the current web request. i'm trying to insert or update data into a database from detailsview through coding. without giving a datasource to details view, because it is very easy.