Is there an example of using the DataGrid in .Net?

I have a WinForm that I created in C# and placed a DataGrid in the form. The DataGrid works but every field from my table is displayed in the form.

I tried filling in the properties from the TableStyles collection and placed the DB object name in the MappingName. I then go to the GridColumnStyles collection and add 2 fields, etc...

But when I run this form, every field displays in the grid. Not just the 2 I defined.

What am I missing? Is there a C# example of making the DataGrid work?

Thanks,

Jerryt