The problem I am having is how to refactor logic to an external class, that has references to the winform controls.
Form All following code is part of private string last Edited Cell Value; private void dgv Replenish_Cell Begin Edit(object sender, Data Grid View Cell Cancel Event Args e) private void dgv Replenish_Cell Validating(Object sender, Data Grid View Cell Validating Event Args e) private void dgv Replenish_Cell Clicked(object sender, Data Grid View Cell Event Args e) private void dgv Replenish_Cell Formatting(object sender, Data Grid View Cell Formatting Event Args e) private void dgv Replenish_Cell Value Changed(object sender, Data Grid View Cell Event Args e) The truth is, it's really very hard to refactor this code out of the code behind once it's been written like this.
However, pressing the Esc key in this situation will revert the initial value of the cell and it will close the editor. The Row Validating event has a slightly different behavior.
When the validation fails, the editor is closed, but the user cannot change the current row in the grid until a valid cell value is entered.
By default, it skips the current cell and places the focus in the row below.This scenario can be achieved by using the Row Validating event, which is fired when the user tries to change the current row (changing to another row or when the control loses focus).Note that only the Cell Validating event can keep the editor active,when the validation fails and it does not allow the user to exit the cell until a valid value is filled.Set the Error Text property on the row to an explanatory string.This displays an error icon with a Tool Tip that contains the error text.Honestly, I can't see a difference, since the Cell Enter event occurs when the cell receives focus, and the e.