Cancel true practical examples of row validation and error handling on datagridview c a p replied to eswaran radhakrishnan on 04 dec 08 02 57 am thanks. I ve managed to make my validation see that if i have an existing row and i change the primary key to an empty or a repeated value it locks the datagridview in that cell untill i fix it rowvalidated rowvalidating. If this late scenario happen the custom control will base its behavior on line1 and not on line2 as it should be. In this case what you ll need to do is to create some communication between your grids. Cancel true push messagebox statement above the line e. Push messagebox statement above the line e.
The problem is that validation and ensuring that a grid s currency what row is the current row has to be coordinated between grids. Here is what my wndproc method plus constants looks like so far private hi sorry to insist but the requirement is clear i need somehow to validate a row when the mouse leaves the active row rowvalidated rowvalidating. Here s my attempt at the row validation but it does not work i would like your help please. This is why i want to ensure that the active row gets validated when the mouse leaves the active row. If you want the whole story we are using some custom editors in cells and these custom editors where badly designed and react on mouse over. B ask the user if they want to cancel the edit or c validate the data and commit the data only if validation succeeds.
Also the behavior of the custom editor depends on the active row this is the way it seems to be coded i do not have the code and as a result the behavior is wrong in a situation where i a cell in line 1 is currently in edit mode and ii the mouse goes over this custom control on line 2. To do this create a custom dgv class that derives from datagridview. Tostring datagridview2.I want the row to be blocked until the user provides appropiate input to my primary key the column is called loops on index 5 however with the code i ve posted it only triggers the lockdown if i step on the primary key. syntax up votedown votefavorite so i have this datagridview that displays my whole table as we all know the primary field cannot be empty or repeated so i have to do some validating before saving it to the database.
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