Hi Nattapong Nuchmuang,
You cannot use a DataGrid for this. You could Try Template Grid/List View and add data Widgets.
The form elements are loaded upon clicking the fields so they are not already available in the DOM.
You could style the fields in the columns to look like input fields (so you would have the visual hint that they are editable) but the actual input element is loaded after clicking the cell in the data grid. This might be enough for your use case?