访问中继器中的控件

本文关键字：控件 中继器 访问 | 更新日期: 2023-09-27 18:20:51

假设我有以下内容：

<asp:Repeater ID="repSubItems" runat="server" DataSource="<%# SubItems %>" >
    <ItemTemplate>
        <sc:FieldRenderer ID="FieldRenderer1" 
            FieldName="BlurbSpot_Content_SubHeading" 
            runat="server" 
            Item="<%# Container.DataItem as Sitecore.Data.Items.Item %>" />  
    </ItemTemplate>
</asp:Repeater>

我想在代码背后能够做到：

FieldRenderer1.Style["Width"] = MyCoolWidth;

但是在Repeater内，我不能访问FieldRenderer1控制。

访问中继器中的控件

您需要处理repSubItems中继器的ItemDataBound事件。示例：

protected void repSubItems_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        var fieldRenderer1 = e.Item.FindControl("FieldRenderer1") as Sitecore.Web.UI.WebControls.FieldRenderer;
        if (fieldRenderer1 != null)
        {
            fieldRenderer1.Style["Width"] = MyCoolWidth;
        }
    }
}

您需要在Repeater中找到要查找的行，然后找到控件。以下是一个可以对Repeater:中的所有项目执行此操作的示例

// repeater item
foreach (Control cr in repSubItems.Controls)
{
    // assuming this is your templated control name and not the final output name
    FieldRenderer founcControl = cr.FindControl("FieldRenderer1") as FieldRenderer;
    founcControl .Style["Width"] = MyCoolWidth;
}

更好的方法是为您的控制实现OnDataBinding，因为这样您就无需进行搜索：

<sc:FieldRenderer ID="FieldRenderer1" FieldName="BlurbSpot_Content_SubHeading"
    runat="server" Item="<%# Container.DataItem as Sitecore.Data.Items.Item %>"
     OnDataBinding="FieldRenderer1_DataBinding" />
protected void FieldRenderer1_DataBinding(object sender, System.EventArgs e)
{
    FieldRenderer rend = (FieldRenderer)(sender);
    // you can do whatever you want to rend at this point and it is scoped to ONLY
    // the control so you never have to search for it.
    rend.Style["Width"] = MyCoolWidth;  
}
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