title: How to add a tooltip to Boundfields in a Detailsview, but only if color of column has changed
body: <p>I have the following code ...</p>
  
  <pre><code>&lt;asp:DetailsView ID="dvApprenticeship" runat="server" DataSourceID="dsApprenticeship" AutoGenerateRows="false" BackColor="#E0E8F0" GridLines="None" CellPadding="2"
      DataKeyNames="ProgramID, ProgramName, OrganisationName, StudyYearID, Workgroup, Pathway, FinishDate" OnDataBound="Apprenticeship_DataBound"&gt;
      &lt;Fields&gt;
          &lt;asp:BoundField DataField="ProgramName" HeaderText="Program:" /&gt;
          &lt;asp:BoundField DataField="StudyYearName" HeaderText="Study Year:" /&gt;
          &lt;asp:HyperLinkField DataTextField="OrganisationName" HeaderText="Apprenticeship:&amp;nbsp;" NavigateUrl="Apprenticeships.aspx" /&gt;
          &lt;asp:BoundField DataField="Workgroup" HeaderText="Workgroup:" /&gt;
          &lt;asp:BoundField DataField="Pathway" HeaderText="Pathway:" /&gt;
          &lt;asp:TemplateField HeaderText="Nominal Completion:&amp;nbsp;"&gt;
              &lt;ItemTemplate&gt;
                  &lt;asp:Label ID="labEndDate" runat="server" Text='&lt;%# Eval("FinishDate","{0:d/MM/yyyy}") %&gt;'&gt;&lt;/asp:Label&gt;
              &lt;/ItemTemplate&gt;
          &lt;/asp:TemplateField&gt;
      &lt;/Fields&gt;
      &lt;FooterTemplate&gt;
          &lt;asp:LinkButton ID="lbAddProgramUnits" runat="server" OnClick="AddProgramUnits_Click" ForeColor="White" Font-Bold="true"
              OnClientClick="return confirm('Import the Program Units listed - this may overwrite unit dates. Are you sure?');"&gt;Import from Program&lt;/asp:LinkButton&gt;&amp;nbsp;&amp;nbsp;
          &lt;a href="#" onclick="showhelp('progimphelp');" style="color:White;font-weight:bold;"&gt;Help&lt;/a&gt;
      &lt;/FooterTemplate&gt;
      &lt;FooterStyle HorizontalAlign="Center" BackColor="LightSlateGray" /&gt;
  &lt;/asp:DetailsView&gt;
  </code></pre>
  
  <p>I want to be able to show a tooltip whenever one of the above Boundfields has changed color.</p>
  
  <p>In my C# codebehind, I have code that changes the color of these boundfields depending on certain conditions of the data. This is working fine.</p>
  
  <p>But what I want is to be able to give the users a tooltip when ever they hover their mouse over these Boundfields and ONLY if that field is coloured differently, in my case </p>
  
  <blockquote>
    <p>color.Yellow</p>
  </blockquote>
  
  <p>.</p>