protected void Page_Load(object sender, EventArgs e) { WebUtility.ShowClientConfirm("Message", "Detailfdsafdsafsdafdsaf\nfdsafdsafsdafsdaf\nfdsafdsafdsafsdafsad", "titleOK", "OK", "cancel", null, "onCancel"); wf.Width = 500; wf.Height = 700; wf.Center = true; WebUtility.AdjustWindow(wf); String cbReference = Page.ClientScript.GetCallbackEventReference(this, "arg", "ReceiveServerData", "context"); String callbackScript; callbackScript = "function CallServer(arg, context)" + "{ " + cbReference + ";}"; Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "CallServer", callbackScript, true); catalog = new System.Collections.Specialized.ListDictionary(); catalog.Add("monitor", 12); catalog.Add("laptop", 10); catalog.Add("keyboard", 23); catalog.Add("mouse", 17); ListBox1.DataSource = catalog; ListBox1.DataTextField = "key"; ListBox1.DataBind(); }