title: Table is nullable DateTime, but DataSet throws an exception?
body: <p>I'm attempting to use the DataSet designer to create a datatable from a query.  I got this down just fine.  The query used returns a nullable datetime column from the database.  But, when it gets around to this code:</p>
  
  <pre><code>DataSet1.DataTable1DataTable table = adapter.GetData();
  </code></pre>
  
  <p>This throws a StrongTypingException from:</p>
  
  <pre><code>[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
  public System.DateTime event_start_date {
      get {
          try {
              return ((global::System.DateTime)(this[this.tableDataTable1.event_start_dateColumn]));
          }
          catch (global::System.InvalidCastException e) {
              throw new global::System.Data.StrongTypingException("The value for column \'event_start_date\' in table \'DataTable1\' is DBNull.", e);
          }
      }
      set {
          this[this.tableDataTable1.event_start_dateColumn] = value;
      }
  }
  </code></pre>
  
  <p>How do I use the designer to allow this column to be Nullable?</p>