jqGrid Edit form invoked using Edit button from top toolbar is defined as
grid.navGrid("#grid_toppager", { del: false,add: false,view: true },
{ url: '/Edit',
bSubmit: 'Save',
editCaption: 'Change',
} );
This is used to show data in readonly grid. Pressing submit button does not make sence in this case.
How to remove submit button ?
You can hide Submit button the in the
beforeShowFormof the edit form options: