how to make a email text box c# code example

Example 1: c# how to add newline on text box

string newLine = Environment.NewLine;
sample = "I am"+newLine+"coming"+newLine+" from " +newLine+ "Forget Code";

Example 2: how to make a textbox in html

Simple code:
<input type="text" name="textbox_name" id="textbox_id"
class="textbox_classname">

Apart from this there are many other attributes are there which we can use in textbox
> placeholder
> style
> value 
etc..