1 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> 2 3 <%@ Register Src="ChapterCourseware.ascx" TagName="ChapterCourseware" TagPrefix="uc2" %> 4 5 <head runat="server"> 6 <title>无标题页</title> 7 </head> 8 <body> 9 <form id="form1" runat="server"> 10 <div id="info_1"> 11 <asp:PlaceHolder runat="server" ID="phCourseware"></asp:PlaceHolder> 12 </div> 13 </form> 14 </body> 15 </html>
ASP.NET 后台代码：
1 using System; 2 using System.Data; 3 using System.Configuration; 4 using System.Web; 5 using System.Web.Security; 6 using System.Web.UI; 7 using System.Web.UI.WebControls; 8 using System.Web.UI.WebControls.WebParts; 9 using System.Web.UI.HtmlControls; 10 11 public partial class _Default : System.Web.UI.Page 12 { 13 protected void Page_Load(object sender, EventArgs e) 14 { 15 TabLoadControls(); 16 } 17 18 19 #region 加载控件 20 private void TabLoadControls(int iChapterId, int iCourseID) 21 { 22 /* 23 * 第一种方法：这种方法能传值 24 * 这种写法需要在前台页面中拖拽控件ChapterCourseware.ascx，也就是在Default.aspx页面中加入这行代码： 25 * <%@ Register Src="ChapterCourseware.ascx" TagName="ChapterCourseware" TagPrefix="uc2" %> 26 */ 27 //清楚容器控件中的控件 28 //phCourseware.Controls.Clear(); 29 30 ASP.teachercenter_controls_chaptercourseware_ascx ucCourseware = new ASP.teachercenter_controls_chaptercourseware_ascx(); 31 //给用户控件传值 32 ucCourseware.ChapterId = iChapterId; 33 ucCourseware.CourseID = iCourseID; 34 //加载用户控件至容器控件中 35 phCourseware.Controls.Add(ucCourseware); 36 37 38 39 /* 40 * 第二种，不需要传值的写法 41 * 这种写法不需要在前台页面中拖拽控件ChapterCourseware.ascx，也就是在Default.aspx页面中不需要这行代码： 42 * <%@ Register Src="ChapterCourseware.ascx" TagName="ChapterCourseware" TagPrefix="uc2" %> 43 * 44 */ 45 46 phCourseware.Controls.Add(TemplateControl.LoadControl("~/ChapterCourseware.ascx")); 47 } 48 #endregion 49 }
ChapterCourseware.ascx 控件的后台代码中写入属性以用于接收参数：
1 #region 页面参数 课程ID：CourseID 章节ID：ChapterId 2 /// <summary> 3 /// 课程ID 4 /// </summary> 5 public int CourseID 6 { 7 get 8 { 9 return (int)ViewState["CourseID"]; 10 } 11 set 12 { 13 ViewState["CourseID"] = value; 14 } 15 } 16 17 /// <summary> 18 /// 章节ID 19 /// </summary> 20 public int ChapterId 21 { 22 get 23 { 24 if (ViewState["ChapterId"] != null) 25 return Convert.ToInt32(ViewState["ChapterId"]); 26 else 27 return -1; 28 } 29 set 30 { 31 ViewState["ChapterId"] = value; 32 } 33 } 34 #endregion