How to get data from multiple textboxes

Question

Hello Friends,

Actually, I want to get data from multiple text boxes. 

TextBox count is not fixed, TextBox name is getting changed like textBox1, textBox2, textBox3..... depends on add button click.

I am using one panel, in this panel adding textbox on button click event.  Textbox count is not fixed so please suggest to me how to read added textboxes value in panel.