Why is my bound DataGridView throwing an “Operation not valid because it results in a reentrant call to the SetCurrentCellAddressCore function” error?

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The exception is raised by the DataGridView in order to prevent an infinite loop from occurring. The cause of this is usually one of the following:

  • Changing the active cell while an operation is being performed on the currently-active cell
  • Beginning, ending or cancelling edit mode while a cell edit is already in-progress
  • Any other operation that results in the active cell being changed while the DataGridView is still using it

Have a look at your handler for the CellValueChanged event and make sure you are not doing any of the above within the handler.

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