It May Happen That Above Tips Will Not Work As Lots Of Time The Page

1.	It May Happen That Above Tips Will Not Work As Lots Of Time The Page Header Already Set. Then, How To Achieve Same Result Using Apex?
Answer» Add below LINE of CODE in APEX (CONSTRUCTOR) Apexpages.currentPage().getHeaders().put('X-UA-Compatible', 'IE=8'); Add below line of code in Apex (Constructor) Apexpages.currentPage().getHeaders().put('X-UA-Compatible', 'IE=8');

It May Happen That Above Tips Will Not Work As Lots Of Time The Page Header Already Set. Then, How To Achieve Same Result Using Apex?

Answer»

Add below LINE of CODE in APEX (CONSTRUCTOR)
Apexpages.currentPage().getHeaders().put('X-UA-Compatible', 'IE=8');

Add below line of code in Apex (Constructor)
Apexpages.currentPage().getHeaders().put('X-UA-Compatible', 'IE=8');