如何在直放站做AsyncPostBackTrigger为LinkBut​​ton的 [英] How to do AsyncPostBackTrigger for the LinkButton in the Repeater

问题描述

在我的网页，我有内部中继器LinkBut​​ton的，但在UpdatePanel无法找到的LinkBut​​ton到AsyncPostBackTrigger。

In my page, I have an LinkButton inside repeater, but the UpdatePanel cannot find the LinkButton to AsyncPostBackTrigger.

下面是我的code.aspx

Here is mycode.aspx

<asp:ScriptManager ID="Test1" runat="server" />
<asp:UpdatePanel ID="TestUpdate" runat="server" UpdateMode="Always">
<ContentTemplate>
<table width="100%">
<tr valign="top">
    <td width="50%">
        <asp:Repeater ID="productList" runat="server" onitemcommand="productList_ItemCommand">
        <HeaderTemplate>
        <ul type="disc">
        </HeaderTemplate>
        <ItemTemplate>
        <li>
            <asp:Label id="L1" runat="server" Text='<%# Eval("productName") %>'></asp:Label><br />
            Price:
            <asp:Label runat="server" Text='<%# Eval("productPrice") %>' ></asp:Label>&nbsp;Bath<br />
            <img alt="" src="Images/product/product<%# Eval("productID") %>.png" style="width: 200px; height: 130px" /><br />
            <asp:TextBox ID="num_product" runat="server" Text="0"></asp:TextBox><br />
            <asp:LinkButton ID="order_button" runat="server"><img alt="" src="~/Images/button/order.png" /></asp:LinkButton>
        </li>
        </ItemTemplate>
        <FooterTemplate>
        </ul>
        </FooterTemplate>
        </asp:Repeater> 
    <td>
    <span class="labelText">Order list</span>
        <asp:BulletedList ID="orderList" runat="server" BulletStyle="Numbered">
        </asp:BulletedList> 
    </td>
</tr>
</table>
</ContentTemplate>
</asp:UpdatePanel>

下面是我的code.aspx.cs

Here is mycode.aspx.cs

protected void productList_ItemCommand(object source, RepeaterCommandEventArgs e)
    {
        //button
        /*LinkButton btn = new LinkButton();
        btn.ID = "order_button";
        btn.Click += LinkButton1_Click;
        Test1.RegisterAsyncPostBackControl(btn);*/

        LinkButton btn = (LinkButton)e.Item.FindControl("order_button");
        btn.Click += LinkButton1_Click;
        Test1.RegisterAsyncPostBackControl(btn);

            /*AsyncPostBackTrigger trigger = new AsyncPostBackTrigger();
            trigger.ControlID = btn.ClientID;
            trigger.EventName = "Click";
            TestUpdate.Triggers.Add(trigger);*/

    }
   protected void LinkButton1_Click(object sender, EventArgs e)
    {
        //string name = ProductName1.Text.ToString();
        //int price = System.Convert.ToInt32(ProductPrice1.ToString(), 10);
        //int number = System.Convert.ToInt32(TextBox1.ToString(),10);
        //orderList.Items.Clear();
        //orderList.Items.Add(new ListItem(name));
        //ListItem product1 = new ListItem();
        //product1.Text = name;
        orderList.Items.Add("test");
    }

我试过很多方法，但网页仍然刷新。你有什么建议吗？

I tried many methods, but the page is still refresh. Do you have any suggestion?

推荐答案

在Repeater控件的ItemCreated事件注册按钮的ScriptManager。

Inside ItemCreated event of the Repeater control register the button with ScriptManager.

//Inside ItemCreatedEvent
ScriptManager scriptMan = ScriptManager.GetCurrent(this);
LinkButton btn = e.Item.FindControl("order_button") as LinkButton;
if(btn != null)
{
    btn.Click += LinkButton1_Click;
    scriptMan.RegisterAsyncPostBackControl(btn);
}

这篇关于如何在直放站做AsyncPostBackTrigger为LinkBut​​ton的的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！