Accessing an object defined in a webpage in a class

You can pass the object from your webpage into the class. For example, if you wanted to manipulate the text in a textbox using a separate class you could do something like this:

public class TextBoxHelper
{
    public void TextBoxContentsToUpper(TextBox t)
    {
        t.Text = t.Text.ToUpper();
    }
}

assuming your webpage has a TextBox with ID "Name" call the class method from your webpage like this:

var helper = new TextBoxHelper();
helper.TextBoxContentsToUpper(Name);