포스트 백 후에 서버 컨트롤의 값을 검색하는 방법

Question

내 .aspx 페이지에 사용자 정의 컨트롤이 있습니다. 사용자 컨트롤은 버튼 클릭 이벤트에 동적으로 추가됩니다. 내 문제는, 다시 게시 후, 사용자 정의 컨트롤 안에 배치 된 서버 컨트롤을 검색 할 수 있지만 값을 검색 할 수 없습니다. 여기

내 .axcs.cs 페이지 내 .aspx 페이지의

using System; 
    using System.Collections.Generic; 
    using System.Linq; 
    using System.Web; 
    using System.Web.UI; 
    using System.Web.UI.WebControls; 
    using System.Data; 

    public partial class qualificationControl : System.Web.UI.UserControl 
    { 
    protected void Page_Load(object sender, EventArgs e) 
    { 
     try 
     { 
      using (DataOperation oDo = new DataOperation()) 
      { 
       DataTable dt = oDo.DropDownList("select * from tblqualificationMaster"); 
       foreach (DataRow row in dt.Rows) 
       { 
        courseList.Items.Add(new ListItem(row[1].ToString(), row[0].ToString())); 
       } 
      } 
     } 
     catch (Exception ex) 
     { 
      throw; 
     } 
    } 
} 

코드의 코드 내 사용자 컨트롤의 .ascx 페이지 여기

<%@ Control Language="C#" AutoEventWireup="true" odeFile="qualificationControl.ascx.cs" Inherits="qualificationControl" %> 
        <table width="100%"> 
         <tr> 
          <td class="RowHeight" width="20%"> 
           Course Name</td> 
          <td width="20%"> 
           <asp:DropDownList ID="courseList" runat="server" Width="100px"> 
           </asp:DropDownList> 
          </td> 
          <td width="20%"> 
           Year of Passing</td> 
          <td width="*"> 
           <asp:DropDownList ID="yearList" runat="server" Width="100px"> 
            <asp:ListItem Value="0">2005</asp:ListItem> 
            <asp:ListItem Value="1">2006</asp:ListItem> 
            <asp:ListItem Value="2">2007</asp:ListItem> 
            <asp:ListItem Value="3">2008</asp:ListItem> 
            <asp:ListItem Value="4">2009</asp:ListItem> 
           </asp:DropDownList> 
          </td> 
         </tr> 
         <tr> 
          <td class="RowHeight" width="20%"> 
           Percentage</td> 
          <td colspan="3"> 
           <asp:TextBox ID="percentageBox" runat="server"> </asp:TextBox> 
          </td> 
         </tr> 
         <tr> 
          <td class="RowHeight" width="20%"> 
           Instutitute Name</td> 
          <td colspan="3"> 
           <asp:TextBox ID="InstiNameBox" runat="server" Width="350px"></asp:TextBox> 
          </td> 
         </tr> 
        </table> 

의 코드입니다

<%@ Page Title="Application Form Level2" Language="C#" MasterPageFile="~/AppMaster.master" AutoEventWireup="true" CodeFile="AppplicationForm2.aspx.cs" Inherits="AppplicationForm2" %> 

<%@ Register src="Control/qualificationControl.ascx" tagname="qualificationControl" tagprefix="uc1" %> 

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server"> 
</asp:Content> 
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"> 

<table width="100%"> 
    <tr> 
     <td> 
      &nbsp;</td> 
    </tr> 
    <tr> 
     <td> 
      &nbsp;</td> 
    </tr> 
    <tr> 
     <td class="SubTitle"> 
      Education details:</td> 
    </tr> 
    <tr> 
     <td runat="server" id="tdQualificationn"> 

      <%--<uc1:qualificationControl ID="qualificationControl1" runat="server" />--%> 
      <asp:UpdatePanel ID="UpdatePanel1" runat="server"> 
       <ContentTemplate> 
        <asp:PlaceHolder ID="UserCtrlHolder" runat="server"></asp:PlaceHolder> 
       </ContentTemplate> 

      <%-- <Triggers> <asp:AsyncPostBackTrigger ControlID="addQualificationBtn" /></Triggers>--%></asp:UpdatePanel> 
     </td> 
    </tr> 
    <tr> 
     <td align="center"> 
      <asp:Button ID="addQualificationBtn" runat="server" 
       Text="Add More Qualifications" Height="40px" 
       onclick="addQualificationBtn_Click" /> 
     </td> 
    </tr> 
</table> 

</asp:Content> 

내 .aspx.cs 코드

using System; 
    using System.Collections.Generic; 
    using System.Linq; 
    using System.Web; 
    using System.Web.UI; 
    using System.Web.UI.WebControls; 
    using System.Collections; 

    public partial class AppplicationForm2 : System.Web.UI.Page 
    { 
     Control qualificationControl; 
     UserControl usrqualificationControl = new UserControl(); 
    int CtrlID = 0; 
    ArrayList CtrlList = new ArrayList(); 
    protected void Page_Load(object sender, EventArgs e) 
    { 
     qualificationControl = usrqualificationControl.LoadControl("~/control/qualificationControl.ascx"); 
     if (!IsPostBack) 
     { 
      ArrayList CtrlList = new ArrayList(); 
      qualificationControl.ID = CtrlID.ToString(); 
      UserCtrlHolder.Controls.Add(qualificationControl); 
      CtrlList.Add(qualificationControl); 
      Session.Add("qualiControl", CtrlList); 
      Session.Add("ControlHolder", UserCtrlHolder); 
     } 
    } 
    protected void addQualificationBtn_Click(object sender, EventArgs e) 
    { 
     RememeberOldValues(); 
     if (Session["QualiControl"] != null) 
     { 
      CtrlList = (ArrayList)Session["qualicontrol"]; 
     } 
     qualificationControl.ID = CtrlList.Count.ToString(); 
     CtrlList.Add(qualificationControl); 
     for (int i = 0; i < CtrlList.Count; i++) 
     { 
      UserCtrlHolder.Controls.Add((Control)CtrlList[i]); 
     } 
    }  
    public void RememeberOldValues() 
    { 
     try 
     { 
      if (Session["ControlHolder"] != null) 
       { 
        ArrayList CourseList = new ArrayList(); 
        ArrayList YearList = new ArrayList(); 
        ArrayList percentageList = new ArrayList(); 
        ArrayList InstituteList = new ArrayList(); 
        ArrayList CtrlList = (ArrayList)Session["qualicontrol"]; 
        PlaceHolder PlaceHolder = (PlaceHolder)Session["ControlHolder"]; 
        for (int intListCnt = 0; intListCnt < CtrlList.Count; intListCnt++) 
        { 
         Control userControl = (Control)PlaceHolder.FindControl(CtrlID.ToString()); 
         DropDownList dlCourseList = (DropDownList)userControl.FindControl("courseList"); 
         DropDownList dlYearList = (DropDownList)userControl.FindControl("yearList"); 
         TextBox percentageBox = (TextBox)userControl.FindControl("percentageBox"); 
         TextBox InstiNameBox = (TextBox)userControl.FindControl("InstiNameBox"); 

         CourseList.Add(dlCourseList.SelectedValue); 
         YearList.Add(dlYearList.SelectedValue); 
         percentageList.Add(percentageBox.Text); 
         InstituteList.Add(InstiNameBox.Text); 
        } 
       } 
     } 
     catch (Exception ex) 
     { 
      throw; 
     } 
    } 
} 

어떻게 그 값을 검색 할 수 있습니까?

Answer 1

당신은

((DropDownList)qualificationControl1.FindControl("yearList")).SelectedValue