title: get_value of a feature in IFeatureCursor
body: <p>I'm trying to read the attribute "POSTCODE" of the features in IFeatureCursor. The FID was successful read but the "POSTCODE" was failed. The runtime error 'An expected Field was not found or could not be retrieved properly. Appreciate your advise. Paul</p>
  
  <pre><code>   private void test2(IFeatureCursor pFeatc1)
      {
          IFeature feature = null;
          IFields pFields;
          int ctcur = 0;
          while ((feature = pFeatc1.NextFeature()) != null)
          {
              pFields = feature.Fields;
              int indxid = pFields.FindField("FID");
              int indxpost = pFields.FindField("POSTCODE");
              object valu = feature.get_Value(indxid);
              string valupost = feature.get_Value(indxpost);
              string aValu = Convert.ToString(valu);
              Debug.WriteLine("FID: " + aValu + " Postcode: " + valupost);
              ctcur++;
              feature = pFeatc1.NextFeature();
          }
          MessageBox.Show("count cursor = " + ctcur);
      }
  </code></pre>