IE11 compatibility for Asp.net application

Hi, 

I have a asp.net application and which works fine with the below setting in IE10.

<customHeaders>

<add name ="X-UA-Compatible" Value="IE=edge" />

</customHeaders>

But the same is not working (SSRS report viewer tool bar is not proper) for the IE11 (normal mode). If I launch IE11 as a compatibility mode (manually) then everything is working fine. 

I would like to do the compatibility setting via code or config. 

Please let me know if you have any idea on this.

Thanks and Best Regards

Muthuraja