title: Datatable add to dataset
body: <p>i need to set a table to a dataset</p>
  
  <pre><code>DataSet ds = EventDal.GetEvents();
  DataSet dsReturn = new DataSet();
  DataTable dtReturn = dsReturn.Tables.Add();
  dtReturn.Columns.Add("id");
  dtReturn.Columns.Add("description");
  dtReturn.Columns.Add("status");
  
  foreach (DataRow row in ds.Tables[0].Rows)
  {
    if(Convert.ToInt32(row[1]) == status )
    {
      DataRow newrowdata = dtReturn.NewRow();
      dsReturn.Tables["dtReturn"].ImportRow((row));///i'm getting object ref not set to an instance of object..
      //DataRow drReturn = dtReturn.NewRow();
      //dsReturn.Tables["dtReturn"].Rows.Add(row);
    }
  }
  return dsReturn;
  </code></pre>