要Post ViewState、EventValidation的值

string viewState = "/wEPDwUKMTk4MTYLDzI/WN9r0TKKWFH6vw==";
stringeventValidation = "/wEWGwLL1JTyAQK4oc2iCgK0jZI7vlS/";

viewState = System.Web.HttpUtility.UrlEncode(viewState);
eventValidation = System.Web.HttpUtility.UrlEncode(eventValidation);

string postData = "__VIEWSTATE=" + viewState + "&__EVENTVALIDATION=" + eventValidation;

关于分页，指定 EventTarget
postData += "&__EVENTTARGET="

每次新页面的ViewState、EventValidation的值都会变