title: how to add mouseover tooltip in charts c#
body: <p>I want to show some information(value of column <code>'a'</code>) retrieving from data base when user hover mouse on the bar line. here is my code for displaying chart in C#. Please help</p>
  
  <pre><code>var query="select a,b,c from abc";
  SqlCommand cmd = new SqlCommand(query, conn);
  DataTable dt = new DataTable();
  dt.Load(cmd.ExecuteReader());
  Chart1.Series.Add("test");
  Chart1.Series["test"].XValueMember = "a";
  Chart1.Series["test"].YValueMembers = "b";
  Chart1.DataSource = dt;
  Chart1.DataBind();
  </code></pre>