确定.找到了解决方案.在这里使用按标题获取的列表，但可以使用任何方法:

OK. Found the solution. Answer Here using a list I'm getting by title, but will work with any method:

// Get your ClientContext for your site  in 'clientContext'

SP.List oList = clientContext.Web.Lists.GetByTitle("List Title Here"); 
SP.FieldCollection fieldColl = oList.Fields;
clientContext.Load(fieldColl);
clientContext.ExecuteQuery();

foreach (SP.Field fieldTemp in fieldColl)
{
    MessageBox.Show(fieldTemp.InternalName.ToString()); //I used MessageBox to show, but you can do whatever you like with it here.
}