title: Unable to automatically step into server. unable to determine a stopping location
body: <p>I have a VB.NET VS2010 solution with a WinForms project that calls a web site project in the same solution.</p>
  
  <p>I can step into this web method:
  <code>&lt;WebMethod()&gt; Public Function GetStartUpData() As DataSet</code></p>
  
  <p>and other web methods, but not the following method. I wonder if it has to do with the fact that that is the only web method that uses a parameter of Nullable type.</p>
  
  <p>The method works, I just can't step into it .If I try, I get the error:</p>
  
  <blockquote>
    <p>Unable to automatically step into server. unable to determine a stopping location </p>
  </blockquote>
  
  <p>Is this a bug? Is there a work-around?</p>
  
  <pre><code>&lt;WebMethod()&gt; 
  Public Function RetrieveOrdersByFilter( _
     ByVal customerId As Nullable(Of Integer), _
     ByVal fromDate As Nullable(Of Date), _
     ByVal toDate As Nullable(Of Date), _
     ByVal fromStatusCodeId As Nullable(Of Integer), _
     ByVal toStatusCodeId As Nullable(Of Integer))  As DataSet
  </code></pre>