Why the 'Specified method is not supported' and 'Updating is not supported by data source 'X' unless UpdateCommand is specified' errors occur

• Jul 17, 2023
• 2 minutes to read

These errors may occur if you bind ASPxGridView to a custom data source at runtime and do not implement CRUD operations (such as INSERT, SELECT, UPDATE, and DELETE).

To resolve these errors, handle the following ASPxGridView events:

• The BatchUpdate event if the control is in batch edit mode.

  • Handle the BatchUpdate event.
  • Get a data source.
  • Use the e.InsertValues, e.UpdateValues, and e.DeleteValues collections to get the edited data.
  • Update this data in the data source.
  • Set the e.Handled property to true to cancel the default ‘Batch Update’ operation.

  View Example: ASPxGridView - How to implement batch edit operations

• The RowInserting, RowUpdating, and RowDeleting events if the control is in any edit mode except batch.

  Insert Row:

  • Handle the RowInserting event.
  • Get a data source.
  • Create a new data item and fill its properties from the e.NewValues dictionary.
  • Add this data item to the data source.
  • Save the changes to the data source.
  • Set the event’s e.Cancel property to true to close the edit form.
  • Call the CancelEdit() method to cancel the edit operation.

  Update Row:

  • Handle the RowUpdating event.
  • Get a data source.
  • Use the e.Keys property to get the edited data item from the data source.
  • Edit the data item.
  • Save the changes to the data source.
  • Set the event’s e.Cancel property to true to close the edit form.
  • Call the CancelEdit() method to cancel the edit operation.

  Delete Row:

  • Handle the RowDeleting event.
  • Get a data source.
  • Use the e.Keys property to get the edited data item from the data source.
  • Delete this data item.
  • Save the changes to the data source.
  • Set the event’s e.Cancel property to true to cancel the edit operation.