Which property or method should i use to bind the ToolTip property to an ImageField Class?

Question

In an image control that is bound within a GridView column i can set the Alt text property by using the DataAlternateTextField property.

<asp:ImageField DataImageUrlField="Flag" 
     DataImageUrlFormatString="~/images/f/{0}.png"
     DataAlternateTextField="Description"  >
</asp:ImageField>

which results in somathing like...

<img src="1.png" alt="Alt text"/>

Which property or method should i use to bind the ToolTip property?

<img src="1.png" alt="Alt text"  ToolTip="Title text" />

I would like the users of the website, on mouse hovering of the image, to be able to read the title property.

Answer 1

You can use binding expression to set the title of the ImageField. http://msdn.microsoft.com/en-us/library/ms178366.aspx

Answer 2

To all newbies out there just like me, here what i did

             <asp:TemplateField HeaderText="Test" SortExpression="">
                 <ItemTemplate>
                 <asp:Image ID="Image1" runat="server" 
                    ImageUrl='<%# Eval("Flag", "~/images/f/{0}.png") %>' 
                    AlternateText='<%# Bind("Description") %>' 
                    ToolTip='<%# Bind("Description") %>' />
                 </ItemTemplate>
              </asp:TemplateField>

Thanks Veronica

Answer 3

I am playing with this issue now according to Microsoft, the alternate text property of an ImageField should translate into a tooltip as well. At least that's what it says on the msdn page i just linked.