ASP.NET AJAX : Creating a postback

Question

我想通过在特定事件发生后将一些 AJAX 插入页面来导致仅发生一次的回发。

目前我有:

string script = "<script language='Javascript'>" +
                                    "__doPostBack('GetSpreadsheet', '');" +
                                "</script>";

Page.ClientScript.RegisterStartupScript(this.GetType(), "DownloadExcel", script);

但是，在我这样做之后，每个回发都有一个 GetSpreadsheet 事件目标，而不仅仅是第一个。我做错了什么？

Answer 1

尝试使用ScriptManager.RegisterStartupScript Method (Control, Type, String, String, Boolean) .

在备注中，您会找到这段文字，它解释了您所追求的内容。

Startup script blocks that are registered by using this method are sent to the page only when the control that is registering the block is inside an UpdatePanel control that is being updated.