How to add a tooltip over a textbox in asp.net or javascript?
If given in javascript then please explain perfectly because i dont know javascript.
Please help..................

ASP.NET TextBox control has a built-in Tooltip property which displays the tooltip text when the mouse is over the control.

If you want to implement a custom tooltip, refer this link.
TextBox With Tool Tip Control Implementation

You can also try to use BoxOver. It is open source tooll that uses javascript / DHTML to show tooltips on a website.

Here on DaniWeb we use JQuery for all of our tooltips.

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