title: how to store multiple DataTables into single DataSet in c#?
body: <p>I have the code below which has multiple DataTables with results and I need to pass a single DataSet with all DataTable values.</p>
  
  <pre><code>MySqlCommand cmd = new MySqlCommand(getLikeInfo, con);
  MySqlDataAdapter da = new MySqlDataAdapter(cmd);
  DataTable dt = new DataTable();
  da.Fill(dt);
  
  MySqlCommand cmd1 = new MySqlCommand(getKnowInfo, con);
  MySqlDataAdapter da1 = new MySqlDataAdapter(cmd1);
  DataTable dt1 = new DataTable();
  da1.Fill(dt1);
  
  MySqlCommand cmd2 = new MySqlCommand(getHotelInfo, con);
  MySqlDataAdapter da2 = new MySqlDataAdapter(cmd2);
  DataTable dt2 = new DataTable();
  da2.Fill(dt2);
  
  MySqlCommand cmd3 = new MySqlCommand(getRoomInfo, con);
  MySqlDataAdapter da3 = new MySqlDataAdapter(cmd3);
  DataTable dt3 = new DataTable();
  da3.Fill(dt3);
  
  MySqlCommand cmd4 = new MySqlCommand(getFoodInfo, con);
  MySqlDataAdapter da4 = new MySqlDataAdapter(cmd4);
  DataTable dt4 = new DataTable();
  da4.Fill(dt4);
  </code></pre>
  
  <p>How can I do that?</p>