我想使動態控制生成,我設法把我的控制佔位符。我得到的問題,當我試圖從控制中獲取信息,因爲它不會「看到」控制器中的控件。按鈕onclick問題與佔位符
即
在Test.aspx文件
<asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder>
<asp:PlaceHolder ID="PlaceHolder2" runat="server"></asp:PlaceHolder>
在頁面
protected void Page_Load(object sender, EventArgs e){
TextBox txt = new TextBox();
Button btn = new Button();
btn.OnClientClick = "button_click";
//btn.Attributes.Add("onClick","button_click"); I tried this way , yet didn't work
btn.Attributes.Add("runat","server");
PlaceHolder1.Controls.Add(txt);
PlaceHolder1.Controls.Add(btn);}
和處理程序後面的代碼是:
protected void button_click(Object sender , EventArgs args){
string str = txt.Text; // I don't know if this would work , cuz this method didn't run onclick
PlaceHolder2.Controls.Add(new LiteralControl("intered :"+str));
}
個
非常感謝每個答案,
作爲訪問控制TextBox tmp = (TextBox)PlaceHolder1.FindControl("input");
哪裏是「輸入」文本框是我的id設置
抱歉打擾你,但什麼是類似的處理程序下拉列表?它應該在名單上還是在每個項目上? – Katia
它應該像... DropDownList1.SelectedIndexChanged + = new EventHandler(DropDownList1_SelectedIndexChanged); –