.Net 사용자 정의 컨트롤이 이벤트를 실행하지 않음

Question

사용자 정의 컨트롤을 작성하려고합니다. 이 컨트롤은 SharePoint WebPart에서 사용됩니다. 대부분의 경우 컨트롤이 작동하지만 문제는 컨트롤이 단추가 클릭되었음을 인식하지 못하는 것입니다. 단추 이벤트가 발생하지 않습니다. 코드는 다음과 같습니다 :

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

namespace CU_Controls 
{ 
    public class CheckBoxListDropDown : CheckBoxList 
    { 
     //First row 
     public string Title { get; set; } 

     private const string defaultCssResource = "CU_Controls.EmbeddedResources.DefaultStyles.css"; 

     //Expand or hide on start 
     public bool OpenOnStart { get; set; } 

     protected Panel cbddPanel; 
     protected Panel headerPanel; 
     protected Literal headerText; 
     protected Image headerImage; 

     protected Panel listPanel; 

     protected Panel footerPanel; 
     protected Button okayButton; 
     protected Button cancelButton; 

     public event EventHandler ButtonClickDemo; 

     protected override void OnInit(EventArgs e) 
     { 
      base.OnInit(e); 
     } 

     protected override void CreateChildControls() 
     { 
      base.CreateChildControls(); 

      this.CssClass = "cbddList"; 

      cbddPanel = new Panel(); 
      cbddPanel.CssClass = "cbddPanel"; 
      cbddPanel.ID = this.ClientID + "_cbddPanel"; 
      cbddPanel.EnableViewState = true; 

      headerPanel = new Panel(); 
      headerPanel.ID = this.ClientID + "_headerPanel"; 
      headerPanel.CssClass = "cbddHeaderPanel"; 
      headerPanel.EnableViewState = true; 

      headerText = new Literal(); 
      headerText.EnableViewState = true; 

      headerPanel.Controls.Add(headerText); 

      headerImage = new Image(); 
      headerImage.ID = base.ClientID + "_arrowDown"; 
      headerImage.CssClass = "cbddArrowDown"; 
      headerImage.ImageUrl = this.Page.ClientScript.GetWebResourceUrl(this.GetType(), "CU_Controls.EmbeddedResources.button.gif"); 
      headerImage.EnableViewState = true; 

      headerPanel.Controls.Add(headerImage); 
      cbddPanel.Controls.Add(headerPanel); 

      listPanel = new Panel(); 
      listPanel.ID = base.ClientID + "_listPanel"; 
      listPanel.CssClass = "cbddListPanel"; 
      listPanel.EnableViewState = true; 

      cbddPanel.Controls.Add(listPanel); 

      footerPanel = new Panel(); 
      footerPanel.ID = base.ClientID + "_footerPanel"; 
      footerPanel.CssClass = "cbddFooterPanel"; 
      footerPanel.EnableViewState = true; 

      okayButton = new Button(); 
      okayButton.ID = this.ClientID + "_cbddOkayButton"; 
      okayButton.CssClass = "cbddOkayButton"; 
      okayButton.Text = "Ok"; 
      okayButton.Click += new EventHandler(okayButton_Click); 
      okayButton.EnableViewState = true; 

      footerPanel.Controls.Add(okayButton); 
     } 

     void okayButton_Click(object sender, EventArgs e) 
     { 
      ButtonClickDemo(sender, e); 
     } 

     protected override void Render(HtmlTextWriter writer) 
     { 
      cbddPanel.RenderBeginTag(writer); 

      headerText.Text = this.Title; 
      headerPanel.RenderControl(writer); 

      listPanel.RenderBeginTag(writer); 

      base.Render(writer); 

      footerPanel.RenderControl(writer); 

      listPanel.RenderEndTag(writer); 
      cbddPanel.RenderEndTag(writer); 

      string jqueryToggleFunction = @" 
       <script type=""text/javascript""> 
        $(document).ready(function() {{ 
         $('.{0} td:even').css('background-color', '#efefef'); 

         $('#{1}').live('click', function(){{ $('#{2}').toggle('fast'); }}); 

         $('#{3}').live('click', function(){{ $('#{2}').toggle('fast'); __doPostBack('{3}',''); return false; }});           
        }}); 
       </script>"; 
      writer.Write(string.Format(jqueryToggleFunction, base.CssClass, headerImage.ClientID, listPanel.ClientID, okayButton.ClientID)); 

     } 

    } 
} 

Answer 1

당신은 다시 게시가 발사 될 때 당신이 당신의 모든 컨트롤을 다시하지 않는 것이 있는지 확인해야합니다. 그냥 추가 :

protected override void CreateChildControls() 
{     
    base.CreateChildControls(); 
    if(this.IsPostBack == false) 
    { 
     //Your code which adds panels etc. 
    } 
}