Hi Dear, you can use any control in datagrid but it has many tips and tricks. you can use textbox and datacombo for this target. with row_col_change event you should these acts : 1)move text box to the specific cell with .move method 2)read cell data and move it to text box . .......... for more information about this please contact with me : ordubadi@ittoolbox.net or mohammadord@hotmail.com bye. M.R.O

Hi Dear, for your problem you can use these methods : 1) Use Microsoft mask edit control 2) validate your text box when user press any key by controlling on Key_pressed event. . M.R.O (Mohammad reza Ordubadi) ordubadi@Ittoolbox.net