First, you can check, if Request.ServerVariables("REQUEST_METHOD")= "POST"
. That is, assuming, you use POST method to submit the form, the initial load will have GET method, the subsequent submits will be POST.
You can also add a hidden field in your form, if that variable is set in POST data (Request.Form
object), you will know it is a postback, otherwise it is the first load.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…