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POC#/.Net 2.0: Problem with the Repeater control and Checkboxes when inside a User Control!
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  1. POC#/.Net 2.0: Problem with the Repeater control and Checkboxes when inside a User Control!
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    copied!<p>I have a repeater control with a check box, if I check the box then my delete functionality will delete an item in the underlying table.</p> <p>When I test the delete functionality on an aspx page with a code behind page, everything works fine. Hooray!</p> <p>However, when I take the repeater and put it into a User Control, the delete functionality thinks that my repeater control has no items.</p> <p>Code as below, I've tried to strip out the unnecessary code. I asked this question on the asp.net forums but no-one responded!</p> <p>asxc:</p> <pre><code>&lt;%@ Control AutoEventWireup="true" Inherits="Moto.Web.UI.UserControls.Messages.MessageListForm" Language="C#" %&gt; &lt;asp:button id="btnDelete" runat="server" text="Delete" OnClick="btnDelete_Click" &gt;&lt;/asp:button&gt; &lt;asp:Repeater ID="RepeaterMessageList" runat="server" EnableViewState="true" &gt; &lt;ItemTemplate &gt; &lt;div class="messageContainer item" &gt; &lt;div class="messageListLeft"&gt; &lt;div class="messageList"&gt; &lt;asp:Image ID="imgUser" runat="server" CssClass="" /&gt; &lt;asp:CheckBox ID="chkDeleteMe" runat="server" Text="test" /&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/ItemTemplate&gt; &lt;/asp:Repeater&gt; </code></pre> <p>Code file:</p> <pre><code>using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Collections; using System.Collections.Generic; using System.IO; namespace Moto.Web.UI.UserControls.Messages { public class MessageListForm : Moto.Web.UI.UserControls.UserControl//System.Web.UI.UserControl { private string userGUID; private MembershipUser MembershipUser; private Moto.Business.UserComponent userComponent; private Moto.Business.User user; private Button cmdPrev; private Button cmdNext; private Button cmdNewest; private Button cmdOldest; private Label lblCurrentPage; private Label lblMessage; private HyperLink hypPageRedirect; private Repeater RepeaterMessageList; private MessageView DisplayMessages = MessageView.Inbox;//default setting private Button btnDelete; private Label lblConfirmDelete; protected Button btnConfirmDelete; protected Button btnCancelDelete; enum MessageView { Inbox, //0 Sent //1 } protected override void OnInit(EventArgs e) { base.OnInit(e); this.InitializePage(); } protected void InitializePage() { this.cmdNext = (Button)FindControl("cmdNext"); this.cmdPrev = (Button)FindControl("cmdPrev"); this.cmdOldest = (Button)FindControl("cmdOldest"); this.cmdNewest = (Button)FindControl("cmdNewest"); this.lblCurrentPage = (Label)FindControl("lblCurrentPage"); // this.RepeaterMessageList = (Repeater)FindControl("RepeaterMessageList"); this.RepeaterMessageList = (Repeater)FindControlRecursive(this, "RepeaterMessageList"); this.hypPageRedirect = (HyperLink)FindControl("hypPageRedirect"); this.lblMessage = (Label)FindControl("lblMessage"); //delete functionality this.btnDelete = (Button)FindControl("btnDelete"); this.lblConfirmDelete = (Label)FindControl("lblConfirmDelete"); this.btnConfirmDelete = (Button)FindControl("btnConfirmDelete"); this.btnCancelDelete = (Button)FindControl("btnCancelDelete"); //where are we coming from - are we the Logged in user or just a voyeur? if (Page.User.Identity.IsAuthenticated) { this.userComponent = new Moto.Business.UserComponent(); this.MembershipUser = Membership.GetUser();//user logged in this.userGUID = this.MembershipUser.ProviderUserKey.ToString();//signed in user this.user = this.userComponent.GetByUserGUID(this.userGUID); } else { Response.Redirect("~/default.aspx"); } if (null != this.Page.Request.QueryString["viewing"]) { //reset the enum value DisplayMessages = this.Page.Request.QueryString["viewing"].ToLower() == "sent" ? MessageView.Sent : MessageView.Inbox; CurrentPage = 0;//if it's a redirect then reset the Current Page } } void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { ItemsGet();//on post back we'll call it elsewhere } switch (DisplayMessages) { case MessageView.Sent: this.hypPageRedirect.Text += "Inbox"; this.hypPageRedirect.NavigateUrl += "?viewing=Inbox"; break; case MessageView.Inbox: this.hypPageRedirect.Text += "Sent Items"; this.hypPageRedirect.NavigateUrl += "?viewing=Sent"; break; } } protected void cmdPrev_Click(object sender, EventArgs e) { // Set viewstate variable to the previous page CurrentPage -= 1; // Reload control ItemsGet(); } protected void cmdNext_Click(object sender, EventArgs e) { // Set viewstate variable to the next page CurrentPage += 1; // Reload control ItemsGet(); } protected void cmdNewest_Click(object sender, EventArgs e) { // Set viewstate variable to the previous page CurrentPage = 0; // Reload control ItemsGet(); } protected void cmdOldest_Click(object sender, EventArgs e) { } public void RepeaterMessageList_ItemDataBound(object sender, RepeaterItemEventArgs e) { // Execute the following logic for Items and Alternating Items. if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) { //Are we vieing the Inbox or Sent items? if (DisplayMessages == MessageView.Inbox) { .........Do stuff } else { .........Do stuff } } } private void ItemsGet() { // this.RepeaterMessageList = (Repeater)FindControl("RepeaterMessageList"); this.RepeaterMessageList.ItemDataBound += new RepeaterItemEventHandler(RepeaterMessageList_ItemDataBound); // Populate the repeater control with the Items DataSet PagedDataSource objPds = new PagedDataSource(); if (DisplayMessages == MessageView.Inbox)//which table are we getting data from? { List&lt;Moto.Business.MessageReceived&gt; messages; Moto.Business.MessageReceivedComponent messageComponent = new Moto.Business.MessageReceivedComponent(); messages = messageComponent.GetByReceiverGUID(this.user.UserGUID); objPds.DataSource = messages; } else { List&lt;Moto.Business.MessageSent&gt; messages; Moto.Business.MessageSentComponent messageComponent = new Moto.Business.MessageSentComponent(); messages = messageComponent.GetBySenderGUID(this.user.UserGUID); objPds.DataSource = messages; //Items.Tables[0].DefaultView; } // Indicate that the data should be paged objPds.AllowPaging = true; // Set the number of items you wish to display per page objPds.PageSize = 25; // Set the PagedDataSource's current page objPds.CurrentPageIndex = CurrentPage; this.lblCurrentPage.Text = "Page " + (CurrentPage + 1).ToString() + " of " + objPds.PageCount.ToString(); // Disable Prev or Next buttons if necessary this.cmdPrev.Enabled = !objPds.IsFirstPage; this.cmdNext.Enabled = !objPds.IsLastPage; this.cmdOldest.Enabled = !objPds.IsLastPage; this.cmdNewest.Enabled = !objPds.IsFirstPage; this.RepeaterMessageList.DataSource = objPds; this.RepeaterMessageList.DataBind(); } public int CurrentPage { get { // look for current page in ViewState object o = this.ViewState["_messagesCurrentPage"]; if (o == null) return 0; // default page index of 0 else return (int)o; } set { this.ViewState["_messagesCurrentPage"] = value; } } protected void btnDelete_Click(object sender, EventArgs e) { foreach (RepeaterItem item in this.RepeaterMessageList.Items) { CheckBox chkDeleteMe = item.FindControl("chkDeleteMe") as CheckBox; TextBox test = item.FindControl("test") as TextBox; if (chkDeleteMe.Checked) { if (DisplayMessages == MessageView.Inbox)//which table are we getting data from? { .........Do stuff } else { .........Do stuff } } } // Reload control ItemsGet(); } protected Control FindControlRecursive(Control root, string id) { if (root.ID == id) { return root; } foreach (Control c in root.Controls) { Control t = FindControlRecursive(c, id); if (t != null) { return t; } } return null; } } </code></pre> <p>Any help greatly appreciated!</p>
 

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