i solve my problem with currency manager, but i have another problem with the DataGridColumnButtonStyle you made.

if have two rows in DataGrid and i start editing a new row, when i call the canceledit of the currency manager, and set the readonly property of the datagrid to true, the textbox stay visible in the place of the third row, and that row does not exit anymore because i cancelled the changes.

the things is that the TextBox won't desapear until it lost the focus.

how can i solve this problem in the DataGridColumnButtonStyle Class.

is there a way to force the TB to disapear when i call the canceledit or endedit?