Call code behind method from aspx page

Question

i have an image tag like

\' /> 

and in

Answer 1

Why do all the databinding stuff just try the below.

protected void Page_Load(object sender,EventArgs e)
{
    if(!IsPostBack)
    {
        ImgProduct.ImageUrl = FormatImageUrl("10");
    }
}

protected string FormatImageUrl(string s)
{
    return "image"+s;
}

I don't understand, what difference does it make for you to databind it or write the code on code behind. Saving a few key strokes?? It would be rather very easy to also watch the Object on Codebehind rather than the Data Binding expression model