Databases
StackOverflow2013
Postsdbo
POOnCheckedChanged event handler of asp:checkbox does not fire when checkbox is unchecked
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POOnCheckedChanged event handler of asp:checkbox does not fire when checkbox is unchecked
    primarykey
    data
    text
    <p>I have a repeater, in each ItemTemplate of the repeater is an asp:checkbox with an OnCheckedChanged event handler set. The checkboxes have the AutoPostBack property set to true. When any of the checkboxes is checked, the event handler fires. When any is unchecked, the event handler does not fire.</p> <p>Any idea why the event does not fire, and how I mgiht make it fire? Thanks.</p> <p>Simplified repeater code:</p> <pre><code>&lt;asp:Repeater ID="rptLinkedItems" runat="server"&gt; &lt;ItemTemplate&gt; &lt;asp:CheckBox ID="chkLinked" runat="server" Checked="false" OnCheckedChanged="chkLinked_CheckedChanged" /&gt; &lt;/ItemTemplate&gt; &lt;/asp:Repeater&gt; </code></pre> <p>The collection is bound to the repeater as follows:</p> <pre><code>protected override void OnPreRenderComplete(EventArgs e) { if (!Page.IsPostBack) { m_linkedItems = GetLinkedItems(); rptLinkedItems.DataSource = GetLinkableItems(); rptLinkedItems.ItemDataBound += new RepeaterItemEventHandler (rptLinkedItems_ItemDataBound); rptLinkedItems.DataBind(); } base.OnPreRenderComplete(e); } </code></pre> <p>The OnItemDataBound event handler is as follows:</p> <pre><code>private void rptLinkedItems_ItemDataBound(Object sender, RepeaterItemEventArgs args) { if (args.Item.ItemType == ListItemType.Item || args.Item.ItemType == ListItemType.AlternatingItem) { CategoryItem item = args.Item.DataItem as CategoryItem; Literal litItemName = args.Item.FindControl("litItemName") as Literal; CheckBox chkLinked = args.Item.FindControl("chkLinked") as CheckBox; litItemName.Text = item.Text; chkLinked.Checked = IsItemLinked(item); chkLinked.AutoPostBack = true; chkLinked.InputAttributes.Add("Value", item.Id.ToString()); } } </code></pre> <p>The OnCheckedChanged event handler is as follows:</p> <pre><code>protected void chkLinked_CheckedChanged(Object sender, EventArgs args) { CheckBox linkedItem = sender as CheckBox; Boolean itemState = linkedItem.Checked; Int32 itemId = Int32.Parse(linkedItem.InputAttributes["Value"].ToString()); DataAccessLayer.UpdateLinkedItem(m_linkingItem, Utilities.GetCategoryItemFromId(itemId), itemState); } </code></pre> <p>P.S. If someone can also tell me why markdown doesn't work correctly for me...</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USadatapost
    1. USJason
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POOnCheckedChanged event handler of asp:checkbox does not fire when checkbox is unchecked
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POOnCheckedChanged event handler of asp:checkbox does not fire when checkbox is unchecked
      1. USBlanthor
      1. VTFavorite
    3. VO
      singulars
      1. POOnCheckedChanged event handler of asp:checkbox does not fire when checkbox is unchecked
      1. This table or related slice is empty.
      1. VTUpMod
    1. CO@Jibberish: RE: your P.S. You weren't doing it right. ;) Try opening this question in edit mode and see what changes I made. Key point 4 spaces to prefix code, which the editor instructs you to do in the right hand panel.
      singulars
      1. POOnCheckedChanged event handler of asp:checkbox does not fire when checkbox is unchecked
      1. USAnthonyWJones
    2. COThanks Anthony, and sorry I missed that in the editor.
      singulars
      1. POOnCheckedChanged event handler of asp:checkbox does not fire when checkbox is unchecked
      1. USJason
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload