Question

我有一个Repeater

<asp:Repeater runat="server" ID="rptID" OnItemDataBound="repID_ItemDataBound">
         <ItemTemplate>
         <a href='example.com/somepage.aspx' id="myLink">
                 <%# Eval("MyVal")%> 
         </a>
        </ItemTemplate>
</asp:Repeater>

在Code Behind中我需要在转发器为1时为此<a>标记添加一个css类项目

protected void repID_ItemDataBound(object sender, RepeaterItemEventArgs e)
  {
      if (e.Item.ItemType == ListItemType.Item || 
          e.Item.ItemType == ListItemType.AlternatingItem)
      {
          //how to set this class only then count of items is equal with 1
          ((HtmlGenericControl)e.Item.FindControl("myLink")).Attributes
                                                     .Add("class", "Count1");
      }
  }

Answer 1

这将为您提供数据源项的计数：

if (((IEnumerable)rptID.DataSource).Cast<object>().Count() == 1)
{
    ((HtmlGenericControl)e.Item.FindControl("myLink")).Attributes
                                                 .Add("class", "Count1");
}

从Calculating Count for IEnumerable (Non Generic)

借用了IEnumerable

如何在ItemDataBound中获取Repeater中的项目数

1 个答案: