I'd like to have my password column to have show or hide functionality when in edit mode.
See attached snapshot for reference
DataGrid allows customizing the Form editors using the <dxi-item> statement. All you need is to define a required editor as in the Custom Text Editor Buttons demo inside <dxi-item>. To make this approach work, wrap TexBox to the *dxTemplate as follows:
<dxi-item> <div *dxTemplate> <dx-textbox> //... </dx-textbox> </div> </dxi-item>
We don't have a ready sample for this case, so feel free to share your progress with us. We will do our best to put you on the right track.