更改 Repeater 控件中的 ASP.NET 控件的属性

发布于 2024-07-30 07:00:13 字数 1317 浏览 7 评论 0原文

我的问题很简单。这就是我对 aspx 页面的内容：

<ul>
    <asp:Repeater runat="server" ID="linksList" OnItemDataBound="linksList_OnItemDataBound" >
    <ItemTemplate>
        <li><asp:HyperLink runat="server" ID="link" /></li>
    </ItemTemplate>
    </asp:Repeater>
</ul>

我正在尝试将超链接列表从 SQL 服务器获取到列表中。这就是我在代码隐藏中的内容：

protected void Page_Load(object sender, EventArgs e)
{
    DataSet ds = Utilities.RunSelectQuery("SELECT *");
    DataTable dt = ds.Tables[0];

    linksList.DataSource = dt;
    linksList.DataBind();
}

数据绑定到后，如何更改 asp:HyperLink 中的 NavigateUrl 和 Text 属性中继器？我想在代码隐藏中执行此操作，如果我在 aspx 页面中使用 <%# Eval("URL") %> 来执行此操作，我可以让它工作，但这有点违背ASP.NET 就是这样。

编辑：由于 womp，这是对我有用的解决方案：

protected void linksList_OnItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        DataRowView row = (DataRowView)e.Item.DataItem;
        HyperLink link = (HyperLink)e.Item.FindControl("link");

        link.Text = row["description"].ToString();
        link.NavigateUrl = row["URL"].ToString();
    }
}

原文

My question is fairly simple. This is what I have for the aspx page:

<ul>
    <asp:Repeater runat="server" ID="linksList" OnItemDataBound="linksList_OnItemDataBound" >
    <ItemTemplate>
        <li><asp:HyperLink runat="server" ID="link" /></li>
    </ItemTemplate>
    </asp:Repeater>
</ul>

I'm trying to get a list of hyperlinks from a SQL server into a list. This is what I have in the codebehind:

protected void Page_Load(object sender, EventArgs e)
{
    DataSet ds = Utilities.RunSelectQuery("SELECT *");
    DataTable dt = ds.Tables[0];

    linksList.DataSource = dt;
    linksList.DataBind();
}

How do I change the NavigateUrl and Text properties in the asp:HyperLink after data's been bound to the Repeater? I want to do this in the codebehind, I can get it to work if I do it using <%# Eval("URL") %> in the aspx page but that's sort of against what ASP.NET is all about.

Edit: this is the solution that worked for me thanks to womp:

protected void linksList_OnItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        DataRowView row = (DataRowView)e.Item.DataItem;
        HyperLink link = (HyperLink)e.Item.FindControl("link");

        link.Text = row["description"].ToString();
        link.NavigateUrl = row["URL"].ToString();
    }
}

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π浅易 2024-08-06 07:00:13

实际上，在模板中使用 Databinder 语法是一个很好的方法这样做，我不确定你的意思是“违背了 ASP.Net 的全部内容”。

但是，如果您确实想在代码中执行此操作，则可以直接在 OnItemDataBound 处理程序（看起来像是您创建的）中执行此操作。像这样的东西（阅读：未经测试）应该可以解决问题：

void linksList_OnItemDataBound(object Sender, RepeaterItemEventArgs e) 
{

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

             DataRow row = e.Item.DataItem as DataRow;
             Hyperlink link = e.Item.FindControl("link"));
             link.Text = row["URL"];
             link.NavigateUrl = row["URL"];
             }
          }
       }

Actually, using the Databinder syntax in your templates is a great way to do it, I'm not sure what you mean that it's "against what ASP.Net is all about".

However, if you really want to do it in code, you can do it right in your OnItemDataBound handler (which it looks like you've created). Something like this (read: untested) should do the trick:

void linksList_OnItemDataBound(object Sender, RepeaterItemEventArgs e) 
{

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

             DataRow row = e.Item.DataItem as DataRow;
             Hyperlink link = e.Item.FindControl("link"));
             link.Text = row["URL"];
             link.NavigateUrl = row["URL"];
             }
          }
       }

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左耳近心 2024-08-06 07:00:13

实现的方法就像你说的那样。如果您只想显示 URL，则在后面的代码中执行此操作会增加不必要的工作。您还需要将标签放入 HeaderTemplate 和 FooterTemplate 中。

    <asp:Repeater runat="server" ID="linksList" OnItemDataBound="linksList_OnItemDataBound" >
    <HeaderTemplate><ul></HeaderTemplate>
    <ItemTemplate>
        <li><asp:HyperLink runat="server" ID="link" NavigateUrl='<%# Eval("url") %>' /></li>
    </ItemTemplate>
    <FooterTemplate></ul></FooterTemplate>
    </asp:Repeater>

The way to do it is just as you said. Doing it in the code behind adds unnecessary work if you only wish to display the URL. You also would want to put the tags in the HeaderTemplate and FooterTemplate.

    <asp:Repeater runat="server" ID="linksList" OnItemDataBound="linksList_OnItemDataBound" >
    <HeaderTemplate><ul></HeaderTemplate>
    <ItemTemplate>
        <li><asp:HyperLink runat="server" ID="link" NavigateUrl='<%# Eval("url") %>' /></li>
    </ItemTemplate>
    <FooterTemplate></ul></FooterTemplate>
    </asp:Repeater>

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