Question

I am trying to show a tooltip within my codebehind. (I am using ASP.NET C#)
What I like to do is to show part of the tooltip in bold as such:
I have the following:

     header["Emp"].ToolTip = "Employee<b>Number</b>"; 

it doesn’t seem to work as the what it shows is:

    Employee<b>Number</b>

Thank you in advance

Answer 1

You cannot display bold tooltips in the way in which you are trying to do.

Tooltip property renders as a title attribute on the HTML element, which doesn’t support formatting.

If you wish to format your tooltip you should use a javascript tooltip alternative.

Here is a link to a popular tooltip jQuery plugin which I have had good experience with:

http://bassistance.de/jquery-plugins/jquery-plugin-tooltip/

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So that your client-side can access this data, I would add it as a HTML5 data-* attribute, and read from that:

header["Emp"].Attributes["data-tooltip"] = "Employee<b>Number</b>";