How do I add an event on a page to handle a click on a link inside my server control? RSS

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  mark4asp

  Member

  167 Points

  232 Posts

  How do I add an event on a page to handle a click on a link inside my server control?

  Nov 07, 2008 03:12 PM|LINK

  It is declared on a page like so. That page is inside a MasterPage. The control will be inside an UpdatePanel.
  

  <mwc:ReportSummary ID="rsAwards" runat="server" />

  Inside this control a link is displayed. When this link is clicked there should be an Ajax postback. How do I create an event to handle this postback in the code behind of the containing page?
  
  The code is typically set up like so:
  

    ReportSummary rs = (ReportSummary)viewFund.FindControl("rs" + commands[commandIndex]);
  
    SetControlVisibility(gridView, false);
    SetControlVisibility(rs, true);
  
    MandateProfile mp = data_report.GetMandateView4(ReportID, LoginID);
  
    rs.GridIndex = commandIndex;
    rs.TypeOff = commands[commandIndex];
    rs.PensionFundID = mp.PensionfundID;
    rs.DataBind();
  
  The relevant code of the server control is:
  

  using System;
  using System.Web;
  using System.Web.UI;
  using System.Web.UI.WebControls;
  
  namespace MandateWire.Client
  {
    public class ReportSummary : CompositeControl
    {
      private string m_TypeOff;
      private int m_gridIndex;
      private int m_PensionFundID;
      private ITemplate m_ItemTemplate;
  
      public int GridIndex { get { return m_gridIndex; } set { m_gridIndex = value; } }
      public int PensionFundID { get { return m_PensionFundID; } set { m_PensionFundID = value; } }
      public string TypeOff { get { return m_TypeOff; } set { m_TypeOff = value; } }
  
      [TemplateContainer(typeof(ReportSummary))]
      [PersistenceMode(PersistenceMode.InnerProperty)]
      public ITemplate ItemTemplate
      {
        get { return m_ItemTemplate; }
        set { m_ItemTemplate = value; }
      }
  
      protected override void CreateChildControls()
      {
        if (m_ItemTemplate == null)
          m_ItemTemplate = new ReportSummaryTemplate();
        m_ItemTemplate.InstantiateIn(this);
      }
    }
  
    public class ReportSummaryTemplate : ITemplate
    {
      public void InstantiateIn(Control container)
      {
        CreateBackLink(container);
      }
  
      private static void AddLineBreak(ref Control container)
      {
        container.Controls.Add(new LiteralControl("<br />"));
      }
  
      private void CreateBackLink(Control container)
      {
        HyperLink hl = new HyperLink();
        hl.ID = "lnkBack";
        hl.ToolTip = "Back to list";
        hl.NavigateUrl = "#";
        hl.Text = "Back";
        hl.DataBinding += new EventHandler(hl_DataBinding);
        AddLineBreak(ref container);
        container.Controls.Add(hl);
        AddLineBreak(ref container);
      }
  
      void hl_DataBinding(object sender, EventArgs e)
      {
        HyperLink hl = (HyperLink)sender;
        ReportSummary container = (ReportSummary)hl.NamingContainer;
        string url = "closeReport('ctl00$ContentPlaceHolder1$up" + container.TypeOff + "','" + container.GridIndex.ToString() + "$" + container.PensionFundID.ToString() + "')";
        hl.Attributes.Add("onclick", "javascript:" + url);
      }
    }
  }

   
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  bryce27

  Member

  298 Points

  52 Posts

  Re: How do I add an event on a page to handle a click on a link inside my server control?

  Nov 07, 2008 07:58 PM|LINK

    Hyperlink link= this.Master.FindControl("lnkBack") as Hyperlink;
          link.Click += new System.EventHandler(lnkBack_Click);
             

    protected void lnkBack_Click(object sender, EventArgs e)
      {
      //code here
      }
  

  Bryce
  
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