Dropdown
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User-893317190 posted
Hi JagjitSingh,
As mgebhard and oned_gk have said ,you could use usercontrol.Uusercontrol is often used to reuse your control.
To use usercontrol, add a new item called Web Forms User Control and add your dropdownlist into your user control’s ascx page.
In the aspx page where you want to reuse the dropdownlist ,you should use Register directive to register your usercontrol. You should specify the Src property of the register directive as the path of your ascx usercontrol. You should also specify the TagPrefix and TagName property of the register directive.
Below is my code.
My usercontrol.
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="DropDownUserControl.ascx.cs" Inherits="MyWebFormCases.ExtraControls.DropDownUserControl" %> <asp:DropDownList ID="ddlNMS" runat="server" CssClass="btn btn-default btn-sm"> <asp:ListItem Text="1" Value ="1"/> <asp:ListItem Text="2" Value ="2"/> <asp:ListItem Text="3" Value ="3"/> <asp:ListItem Text="4" Value ="4"/> <asp:ListItem Text="5" Value ="5"/> <asp:ListItem Text="6" Value ="6"/> <asp:ListItem Text="7" Value ="7"/> <asp:ListItem Text="8" Value ="8"/> <asp:ListItem Text="9" Value ="9"/> <asp:ListItem Text="10" Value ="10"/> <asp:ListItem Text="11" Value ="11"/> <asp:ListItem Text="12" Value ="12"/> </asp:DropDownList>
My aspx page.
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="UseDropDownUserControl.aspx.cs" Inherits="MyWebFormCases.ExtraControls.UseDropDownUserControl" %> <%@ Register Src="~/ExtraControls/DropDownUserControl.ascx" TagPrefix="uc1" TagName="DropDown" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" integrity="sha384-WskhaSGFgHYWDcbwN70/dfYBj47jz9qbsMId/iRN3ewGhXQFZCSftd1LZCfmhktB" crossorigin="anonymous"> </head> <body> <form id="form1" runat="server"> <uc1:DropDown runat="server" ID="kkk" ></uc1:DropDown> </form> </body> </html>Code behind.
protected void Page_Load(object sender, EventArgs e) { DropDownList dropDownList= kkk.FindControl("ddlNMS") as DropDownList; ListItemCollection collection= dropDownList.Items; }The result.
Best regards ,
Ackerly Xu
