title: Custom SharePoint WebPart - Custom Property Setting Issue
body: <p>I am developing a custom list-search tool. I have multiple custom properties to retain which list the search queries, as well as which fields to query in the search.</p>
  
  <p>EXAMPLE UI</p>
  
  <p>DROPDOWN(Selected fields in list)   TEXTBOX(Query)    SEARCHBUTTON</p>
  
  <p>My issue is that when loading the WebPart, the "Fields to Search" property is being set before the "List to Search" property, which causes and error as I have a check to make sure the Fields actually exist in the correct list before adding them to the dropdown. </p>
  
  <p>Is there any way to designated which order the web part properties get set in on load?</p>