Vb net cellvalidating
For instance, if column with index 2 is read only and you dont want to validate cells in that column you could use: If you have attached an event handler to the Cell Validating event then it will always fire when focus leaves the cell.
Steps: Private Sub Data Grid View1_Cell Validating(By Val sender As System. "The validating event is firing because focus is being moved from the DGV to the button.Since you have not added your new row yet it should validate OK." yeah i think it is because of the line you have said above how can i avoid this situation???thanxxxxxxxxxxx If you have attached an event handler to the Cell Validating event then it will always fire when focus leaves the cell.If there are cells that you dont want to validate (eg read only cells) then add a check at the start of the event handler that will cause it to exit if it is trying to validate those cells.Canceling this event prevents the user from exiting the cell until a valid value is entered or the edit process is canceled (via Esc key).
The Data Bound Item will be updated only if the cell is validated.
In Visual basic i'm trying to make a field required by preventing the user to leave the active cell if it's empty. The first one is the ID which is automaticly filled in on adding a new row, the second one is the name.
On form load there are 4 items loaded into the grid.
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.
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.
However, the user may prefer to validate all the data cells in a row at once.