datagrid- how to format column so exponent does not show

Question

I need to display a floating point number up to 7 digit precision in a datagrid column. When a number has more than 4 digit precision, it is displayed in exponential form. Users want to see the actual number they entered and not the exponential form. Please advise if there is a way to format the column in the datagrid to show .00002 instead of 2E-05.