CODEWITHSUNDEEP
c#asp.net
Alex Ghiculescu
Alex Ghiculescu

Reputation: 7540

asp: repeater.items.count is always zero

I'm fairly new to ASP and I'm a bit stumped by this. I've got a repeater (basicInfoReport) linked to a datasource (basicInfo). This part is working fine; the Eval calls in the repeater are returning the correct data.

I've also got some code-behind that intends to set text in place of the <asp:Literal>s on the page. I've put snippets of both below.

As far as I can tell, the repeater is being databound (since the Eval calls are working), so what I can't work out is why it's reporting zero items, and hence, the foreach statement is doing nothing. Can anyone help? :)

edit: solved, see updated code even further down

ASP (irrelevant stuff removed)

<asp:AccessDataSource ID="basicInfo" runat="server" 
    DataFile="~/Disasters.accdb" 
    SelectCommand="SELECT * FROM [DisasterTable] WHERE ([ID] = ?)">
    <SelectParameters>
        <asp:QueryStringParameter Name="ID" QueryStringField="ID" Type="Int32" />
    </SelectParameters>
</asp:AccessDataSource>

<asp:Repeater ID="basicInfoReport" runat="server" DataSourceID="basicInfo" 
    onitemdatabound="basicInfoReport_ItemDataBound">
<ItemTemplate>
<h2>Disaster report: <%#Eval("Description")#%></h2>
<b><i>This report is confidential.</i></b><br /><br /><br />

This event was reported on <tt><%#Eval("dateReported")#%></tt>. It was reported  <asp:Literal ID="_wasReportedAnonymously" runat="server"></asp:Literal> and is currently  <asp:Literal ID="_isEmergency" runat="server"></asp:Literal> classed as an emergency.
</ItemTemplate>
</asp:Repeater>

C# (irrelevant stuff removed)

protected void basicInfoReport_ItemDataBound(object sender, RepeaterItemEventArgs e) {

// [...]

// reader refers to an OleDbDataReader that is used for some database interaction in this method.
// until this point, basicInfoReport has not been referenced at all.
if (reader[1].ToString().Equals("False"))
   {

     // at this point basicInfoReport.Items.Count is always zero

     foreach (RepeaterItem repeaterItem in basicInfoReport.Items) {

       // control never makes it this far

       if (repeaterItem.ItemType == ListItemType.Item || repeaterItem.ItemType == ListItemType.AlternatingItem)
          {

             Literal emergencyLiteral = (Literal)repeaterItem.FindControl("_isEmergency");

             emergencyLiteral.Text = "not";
           }
      }
   }

 // [...]

 }

Update: Worked it out thanks to almog.ori's help. For my reference, here's the working code:

C# (irrelevant stuff removed)

protected void basicInfoReport_ItemDataBound(object sender, RepeaterItemEventArgs e) {

// [...]

// reader refers to an OleDbDataReader that is used for some database interaction in this method.
// until this point, basicInfoReport has not been referenced at all.
if (reader[1].ToString().Equals("False"))
   {

       if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
          {

             Literal emergencyLiteral = (Literal)e.Item.FindControl("_isEmergency");

             emergencyLiteral.Text = "not";
           }
      }

 // [...]

 }

Upvotes: 3

Views: 4166

Answers (1)

almog.ori
almog.ori

Reputation: 7889

You should take a look at the msdn documentation for the ItemDataBound event, perticularly note the usage of the event argument. 

      void R1_ItemDataBound(Object Sender, RepeaterItemEventArgs e) {

      // This event is raised for the header, the footer, separators, and items.

      // Execute the following logic for Items and Alternating Items.
      if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) {

The event ItemDataBound hands you the "row" in the eventargs. So you can do what you like with it. You should look at e.Item.DataItem which would be the data item for the item being bound

Upvotes: 2

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