WPA XAML Datagrid更新需要有效的UpdateCommand

I am trying to commit changes from a WPF datagrid databound to a microsoft SQL server database via a DataSources table adapter, but I am getting an 'Update requires a valid UpdateCommand' error. I know the DataSources wizard is fairly restricted, but it has correctly created an INSERT statement.I am trying to commit changes from a WPF datagr