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我在這裏要做的是從客戶端調用一個函數,該函數將調用「RaiseCallbackEvent」,並試圖將參數(從客戶端)存儲到視圖狀態中。然而,viewState在回調期間從未被保存,爲什麼?ViewState從未在回調期間保存
public partial class _Default : System.Web.UI.Page, System.Web.UI.ICallbackEventHandler
....
protected void Page_Load(object sender, EventArgs e)
{
ClientScriptManager cm = Page.ClientScript;
String cbReference = cm.GetCallbackEventReference(this, "arg",
"ReceiveServerData", "");
String callbackScript = "function CallServer(arg, context) {" +
cbReference + "; }";
cm.RegisterClientScriptBlock(this.GetType(),
"CallServer", callbackScript, true);
}
.....
public void RaiseCallbackEvent(String eventArgument)
{
ViewState["attribute"] = eventArgument;
}
.....