使用.NET中的JavaScript确定在pageLoad（）中是否发生以及发生了哪些部分回发

要确定回发是否是部分更新，可以使用

scriptManager.GetCurrent(this.Page).IsInAsyncPostBack

protected void Page_Load(object sender, EventArgs e){    if (Page.IsPostBack)    {        // get a reference to scriptManager and check if we have a partial postback        if (scriptManager.GetCurrent(this.Page).IsInAsyncPostBack)        { // partial (asynchronous) postback occured // insert Ajax custom logic here        }        else        { // regular full page postback occured // custom logic accordingly  }    }}

要获取导致回发的更新面板，您可以对其进行调查

scriptManager.GetCurrent(Page).UniqueID

public string GetAsyncPostBackControlID(){    string smUniqueId = scriptManager.GetCurrent(Page).UniqueID;    string smFieldValue = Request.Form[smUniqueId];    if (!String.IsNullOrEmpty(smFieldValue) && smFieldValue.Contains("|"))    {        return smFieldValue.Split('|')[0];    }    return String.Empty;}