Cellvalidating at datagridview

11-Feb-2018 09:08 by 4 Comments

Cellvalidating at datagridview - Horny chatrooms houston

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The problem is that the Cell Validating event fires twice and hence the messagebox appears twice.

Currently, I'm just manually calling my validation logic before I call End Edit, but it seems like I'm missing something.

I guess I could call On Cell Validating, but then I'd be worried I'm missing some other event. Keys) As Boolean Dim key As Keys = (key Data And Keys.

See the image the information is provided there..., which are in blue color they are readonly ......

I tried and i get the answer to true won't allow user to leave current cell as long as value is not valid one.

In a lot of books and articles that I've read on this control, it seems to suggest that the appropriate event to handle for this is the Cell Validating one. However, this event triggers a bit too often for my tastes and I'm not sure it is required.

For example, this event triggers everytimes the users switches to another row.

This, therefore, undoes any action you perform in the handler.

What you have to do instead is change the value in the editing control (remembering not to cancel the event).

I tried experimenting with various things and it appears to happen only when the messagebox is shown in the event. you can try this: declare a boolean instance varibale in your page class and set it to true on pageload. If it's true then run your validation code and set it to false.

I'm using a Data Grid View in my Win Forms application. Process Dialog Key(key Data) End Function No, but you can manually fire the Cell Validating event. All events are is a class using the Observer Pattern, they're no different than any other method.

I found this FAQ entry and subclassed Data Grid View to override Process Dialog Key().