Thanks for your help, yes this issue is solved. Works perfectly 🙂

yes i'm facing another issue the solution you provided to show tooltip is working fine with IgCombo's having data source in memory but its not working with the igCombo's  in which data source is URL of service which returns data.

<input id="cbDb"  data-bind="comboBoxBindingHandler: comboBoxDataSourxe() , attr: { title:'register' , trigger: 'hover'}" ></input> 

works fine until its not the type of URL. 

incase of URL its unable to render the value of title due to which its not showing tooltip.

Thanks for your help but

<input id="txtPassword" type="password" data-bind="value: txtPassword, tooltip: { title:'added as attribute', trigger: 'hover'}" /> 

and its working fine i have a bindling handler.tooltip which reads the title attribute and set its text as tooltip

i found that igcombo rendering input element as 3 level of span's[span > span > span] and title attribute i required is at 3rd level of span if using firebug i manually add title at 3rd level then it shows me tooltip. so i want igcombo todo this for me using any proper solution.

i tried to extend igCombo as mentioned in this post http://www.infragistics.com/community/forums/t/68789.aspx but failed to implement it in my logic.

* I want the combo to have tool tip bound to view model property, i.e. when you hover over the combo and a tool tip is displayed.