Validation in Windows Forms Validations concerns about checking data entry and making sure it is valid based on the criteria of the application requirements.In Windows Forms programming, validation is based around controls and events.NET for dealing with validation and error handling in the client-side.The example is based on a Windows Forms control developed by me which is based on the Text Box control and handles validation in a standardized way in order to detect input errors and display them to users.Some checks are business rules and thus conceptually they must be done in the business layer of the multi-layer application or in the server-side of a client/server application.But the key components, which the end-users interact with, are those which reside in the presentation layer.
I guess for now the problem is that this event fires when the datagridview looses its focus.
Setting this property to False allows the validation process to continue.
A problem with this approach is that if the users enter an invalid value and tries to close the application, by default, they won't be able to do it. NET 2.0, we have the Auto Validate property on the Form class that lets you specify exactly what the behavior should be when the validation error occurs at the control level.
Upon clicking save button, I have to check if there are any conflicts and if there are I display those in another datagridview. This applies to both the Validating event and the Row Validating event. Meyers-Jouan" id="ctl00_m_m_i_ctl00_gr_ctl03_bestanswerbody" class="textarea-bestanswerhidden" name="bestanswerbody" answerbody Id="4411186" / I've tried using a messagebox to know if the user wants to leave the edit mode..
Here is the problem, the row Validating event works fine except that I dont want it to be "Fired" on a particular control such as the datagridview where I display the conflicts, I want the user to browse on the conflicts with out leaving the edit mode. If the user choose no then I would cancel the Event.