Vaildate form input Using Ajax and regex

Question

i have a web form application ,in which have different form to get user data.i have used regex in the input form simply as validation expression.But i want to check user input and quick response him about his input data that what is to add and check the input for not empty using ajax ,my fields label are ,name (just alphabet and space),rollno(digits+/ ) ,phone no etc

 

Answer 1

Please refer the link for more detailed explantion:http://developers.itextpdf.com/content/best-itext-questions-stackoverview/font-examples/itext7-how-use-system-font-itextsharp-vbnet

Answer 2

Dear Gokhul Sir, I have made this. Thank you. But I have another question. I have six buttons bearing same color. I want tab index position of button will show another color. Is it possible? Please help me.