Databases
StackOverflow2013
Postsdbo
POUpdatePanel, Repeater, DataBinding Problem
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POUpdatePanel, Repeater, DataBinding Problem
    primarykey
    data
    text
    <p>In a user control, I've got a Repeater inside of an UpdatePanel (which id displayed inside of a ModalPopupExtender. The Repeater is databound using an array list of MyDTO objects. There are two buttons for each Item in the list. Upon binding the ImageURL and CommandArgument are set.</p> <p>This code works fine the first time around but the CommandArgument is wrong thereafter. It seems like the display is updated correctly but the DTO isn't and the CommandArgument sent is the one that has just been removed.</p> <p>Can anybody spot any problems with the code?</p> <p><strong>Edit : I've just added a CollapsiblePanelExtender to the code. When I now delete an item and expand the panel, the item that was previously deleted (and gone from the display) has come back. It seems that the Repeater hasn't been rebuilt correctly under the bonnet.</strong></p> <p>ASCX</p> <pre><code>&lt;asp:UpdatePanel ID="ViewDataDetail" runat="server" ChildrenAsTriggers="true"&gt; &lt;Triggers&gt; &lt;asp:PostBackTrigger ControlID="ViewDataCloseButton" /&gt; &lt;asp:AsyncPostBackTrigger ControlID="DataRepeater" /&gt; &lt;/Triggers&gt; &lt;ContentTemplate&gt; &lt;table width="100%" id="DataResults"&gt; &lt;asp:Repeater ID="DataRepeater" runat="server" OnItemCommand="DataRepeater_ItemCommand" OnItemDataBound="DataRepeater_ItemDataBound"&gt; &lt;HeaderTemplate&gt; &lt;tr&gt; &lt;th&gt;&lt;b&gt;Name&lt;/b&gt;&lt;/th&gt; &lt;th&gt;&lt;b&gt;&amp;nbsp;&lt;/b&gt;&lt;/th&gt; &lt;/tr&gt; &lt;/HeaderTemplate&gt; &lt;ItemTemplate&gt; &lt;tr&gt; &lt;td&gt; &lt;b&gt;&lt;%#((MyDTO)Container.DataItem).Name%&gt;&lt;/b&gt; &lt;/td&gt; &lt;td&gt; &lt;asp:ImageButton CausesValidation="false" ID="DeleteData" CommandName="Delete" runat="server" /&gt; &lt;asp:ImageButton CausesValidation="false" ID="RunData" CommandName="Run" runat="server" /&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td colspan="2"&gt; &lt;table&gt; &lt;tr&gt; &lt;td&gt;Description : &lt;/td&gt; &lt;td&gt;&lt;%#((MyDTO)Container.DataItem).Description%&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Search Text : &lt;/td&gt; &lt;td&gt;&lt;%#((MyDTO)Container.DataItem).Text%&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/ItemTemplate&gt; &lt;/asp:Repeater&gt; &lt;/table&gt; &lt;/ContentTemplate&gt; &lt;/asp:UpdatePanel&gt; </code></pre> <p>Code-Behind</p> <pre><code> public DeleteData DeleteDataDelegate; public RetrieveData PopulateDataDelegate; public delegate ArrayList RetrieveData(); public delegate void DeleteData(String sData); protected void Page_Load(object sender, EventArgs e) { //load the initial data.. if (!Page.IsPostBack) { if (PopulateDataDelegate != null) { this.DataRepeater.DataSource = this.PopulateDataDelegate(); this.DataRepeater.DataBind(); } } } protected void DataRepeater_ItemCommand(object source, RepeaterCommandEventArgs e) { if (e.CommandName == "Delete") { if (DeleteDataDelegate != null) { DeleteDataDelegate((String)e.CommandArgument); BindDataToRepeater(); } } else if (e.CommandName == "Run") { String sRunning = (String)e.CommandArgument; this.ViewDataModalPopupExtender.Hide(); } } protected void DataRepeater_ItemDataBound(object source, RepeaterItemEventArgs e) { RepeaterItem item = e.Item; if (item != null &amp;&amp; item.DataItem != null) { MyDTO oQuery = (MyDTO)item.DataItem; ImageButton oDeleteControl = (ImageButton) item.FindControl("DeleteData"); ImageButton oRunControl = (ImageButton)item.FindControl("RunData"); if (oDeleteControl != null &amp;&amp; oRunControl !=null) { oRunControl.ImageUrl = "button_expand.gif"; oRunControl.CommandArgument = "MyID"; if (oQuery !=null) { //do something } oDeleteControl.ImageUrl = "btn_remove.gif"; oDeleteControl.CommandArgument = "MyID"; } } } public void BindDataToRepeater() { this.DataRepeater.DataSource = this.PopulateDataDelegate(); this.DataRepeater.DataBind(); } public void ShowModal(object sender, EventArgs e) { BindDataToRepeater(); this.ViewDataModalPopupExtender.Show(); } </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USGordon Thompson
    1. USGordon Thompson
    plurals
    1. This table or related slice is empty.
    1. 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. POUpdatePanel, Repeater, DataBinding Problem
      1. USGordon Thompson
      1. VTBountyStart
    2. VO
      singulars
      1. POUpdatePanel, Repeater, DataBinding Problem
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POUpdatePanel, Repeater, DataBinding Problem
      1. This table or related slice is empty.
      1. VTUpMod
    1. COIs there code missing from your `ItemDataBound` handler? Inside that method, you declare a `MyDTO` variable (`oQuery`) then never use it.
      singulars
      1. POUpdatePanel, Repeater, DataBinding Problem
      1. USJeff Sternal
    2. COsorry, yes, i trimmed it down for brevity
      singulars
      1. POUpdatePanel, Repeater, DataBinding Problem
      1. USGordon Thompson
 

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