How does Devexpress Control help me in growth

How long does Devexpress Control help me in my future growth?

Approx. till the DevExpress survive in the market. DevExpress is a custom tool creator like syncfusion, Telerik etc. I'm not sure, only DevExpress will help you in future. In my 8+ years experience i don't have any experience with these. But I have experienced with ASP.Net,MVC, JQuery, Web Services, WCF etc.

These kind of custom control library may give an extra credit during interviews. That's all. And about your salary you can expect around 30 - 40 Percent normally. That's considered as "Industry" standard. Some companies may give extra. Again, it based on the companies and their needs.

Keep looking! All the best!