动态按钮在动态事件中创建

本文介绍了动态按钮在动态事件中创建的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我为它创建了一个动态按钮和点击事件。 该事件正在发挥作用。 问题是我在其中动态创建了一个按钮，其中有一个点击事件。 此事件未触发

Hi, I have created a dynamic button and a click event for it. That event is working. The problem is that i have created 1 more button dynamically inside that , which has a click event. This event is not triggering

//Method1 void ChatList() { DataTable dtNames = help.GetTable("select userid from tbluser where Login='1'"); for (int i = 0; i < dtNames.Rows.Count; i++) { HtmlGenericControl table = new HtmlGenericControl("table"); HtmlGenericControl tr = new HtmlGenericControl("tr"); HtmlGenericControl tdleft = new HtmlGenericControl("td"); HtmlGenericControl tdright = new HtmlGenericControl("td"); HtmlGenericControl light = new HtmlGenericControl("img"); light.Attributes.Add("src", "images/chaticon.png"); light.Attributes.Add("class", "loglight"); tdright.Controls.Add(light); LinkButton names = new LinkButton(); names.Attributes.Add("class", "list"); names.Attributes.Add("style", "text-decoration:none;color:#8997ef;"); names.ID = dtNames.Rows[i].ItemArray[0].ToString(); names.Click += new EventHandler(ShowChat_Click); names.Text = dtNames.Rows[i].ItemArray[0].ToString(); tdleft.Controls.Add(names); tr.Controls.Add(tdleft); tr.Controls.Add(tdright); table.Controls.Add(tr); // tr.Controls.Add(new LiteralControl("")); plcChatList.Controls.Add(table); } } //My first click event(WORKING) public void ShowChat_Click(object sender, EventArgs e) { LinkButton names = new LinkButton(); names = sender as LinkButton; string Id = names.ID; Label1.Text = Id; TextBox ChatBox = new TextBox(); ChatBox.ID = names.ID + "Txt"; HtmlGenericControl table = new HtmlGenericControl("table"); HtmlGenericControl tr = new HtmlGenericControl("tr"); HtmlGenericControl tdL = new HtmlGenericControl("td"); HtmlGenericControl tdR = new HtmlGenericControl("td"); HtmlGenericControl sendBtnImg = new HtmlGenericControl("img"); sendBtnImg.Attributes.Add("src", "images/sendbtn.png"); sendBtnImg.Attributes.Add("class", "sendbtn"); LinkButton Send = new LinkButton(); Send.ID = names.ID; Send.Click += new EventHandler(ShowChatMsg_Click); if (!Page.IsPostBack) { Send.Click += new EventHandler(ShowChatMsg_Click); } Send.Controls.Add(sendBtnImg); tdL.Controls.Add(ChatBox); tdR.Controls.Add(Send); tr.Controls.Add(tdL); tr.Controls.Add(tdR); table.Controls.Add(tr); plcChatWindow.Controls.Add(table); } //My second click event (NOT WORKING) public void ShowChatMsg_Click(object sender, EventArgs e) { LinkButton Send = new LinkButton(); Send = sender as LinkButton; string Id = Send.ID; DataTable dt = help.GetTable("select text from message where userID='"+Id+"'"); Label lblText = new Label(); lblText.ID = Id + "chat"; Label2.Text = Id; lblText.Text = dt.Rows[0].ItemArray[0].ToString(); plcAllChat.Controls.Add(lblText); }

推荐答案

理想情况下，应在pa​​ge_load事件中添加/注册事件处理程序。检查下面的示例代码。 Ideally, event handlers should be added/registered in page_load event. Check the below sample code. Page_Load() { Button b = new Button(); b.ID = "btnMyButton"; b.Text = "some text"; b.Command += new CommandEventHandler(b_Command); //handler }