C# 阅读中继器内的文本框

我有两个转发器，在另一个里面打印菜单标题和菜单项。 它们看起来像这样：

<asp:Repeater ID="ParentRepeater" runat="server" OnItemDataBound="ParentRepeater_ItemDataBound">
        <ItemTemplate>
            <h2>
                <%#DataBinder.Eval(Container.DataItem, "typenavn") %></h2>
            <asp:HiddenField ID="HiddenField1" Value='<%# Eval("id") %>' runat="server" />
            <asp:Repeater ID="ChildRepeater" runat="server">
                <ItemTemplate>
                    <table>
                        <tr>
                            <td style="width: 200px">
                                <%#DataBinder.Eval(Container.DataItem, "productName") %>
                            </td>
                            <td style="width: 200px">
                                <%#DataBinder.Eval(Container.DataItem, "pris") %>
                            </td>
                            <td>
                                <asp:HiddenField ID="HiddenField2" runat="server" />
                                <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />
                            </td>
                        </tr>
                    </table>
                </ItemTemplate>
            </asp:Repeater>
        </ItemTemplate>
    </asp:Repeater>

这是：

foreach (RepeaterItem item in ParentRepeater.Items)
{
    if (item.ItemType == ListItemType.Item)
    {
        TextBox txt = (TextBox)item.FindControl(("MainContent_ParentRepeater_ChildRepeater_0_HB1_0")) as TextBox;
        // do something with "myTextBox.Text"
        break;
    }
}

foreach (RepeaterItem item1 in ParentRepeater.Items)
{
    if (item1.ItemType == ListItemType.Item || item1.ItemType == ListItemType.AlternatingItem)
    {
        ChildRepeater = (Repeater)item1.FindControl("ChildRepeater");

        foreach (RepeaterItem item2 in ChildRepeater.Items)
        {
            if (item2.ItemType == ListItemType.Item || item2.ItemType == ListItemType.AlternatingItem)
            {
                TextBox txt = (TextBox)item2.FindControl(("ct100$MainContent$ParentRepeater$ct100$ChildRepeater$ct100$HB1")) as TextBox; // MainContent_ParentRepeater_ChildRepeater_0_HB

             }
         }
     }
     break;
 }

这是：

foreach (RepeaterItem item in ParentRepeater.Items)
{
    if (item.ItemType == ListItemType.Item)
    {
        TextBox txt = (TextBox)item.FindControl(("MainContent_ParentRepeater_ChildRepeater_0_HB1_0")) as TextBox;
        // do something with "myTextBox.Text"
        break;
    }
}

foreach (RepeaterItem item1 in ParentRepeater.Items)
{
    if (item1.ItemType == ListItemType.Item || item1.ItemType == ListItemType.AlternatingItem)
    {
        ChildRepeater = (Repeater)item1.FindControl("ChildRepeater");

        foreach (RepeaterItem item2 in ChildRepeater.Items)
        {
            if (item2.ItemType == ListItemType.Item || item2.ItemType == ListItemType.AlternatingItem)
            {
                TextBox txt = (TextBox)item2.FindControl(("ct100$MainContent$ParentRepeater$ct100$ChildRepeater$ct100$HB1")) as TextBox; // MainContent_ParentRepeater_ChildRepeater_0_HB

             }
         }
     }
     break;
 }

而且都不管用。外面有人能帮我吗？？如何在中继器中获取文本框？？？

FindControl函数应获取服务器控件的ID，而不是呈现的客户端控件的ID。您应该能够做到这一点：

var txt = item.FindControl("TextBox1") as TextBox;
if (txt != null) 
{
    // found it!
}

要调整代码，请执行以下操作：

foreach (RepeaterItem item1 in ParentRepeater.Items)
{
    if (item1.ItemType == ListItemType.Item || item1.ItemType == ListItemType.AlternatingItem)
    {
        ChildRepeater = (Repeater)item1.FindControl("ChildRepeater");

        foreach (RepeaterItem item2 in ChildRepeater.Items)
        {
            if (item2.ItemType == ListItemType.Item || item2.ItemType == ListItemType.AlternatingItem)
            {
                 TextBox txt = (TextBox)item2.FindControl(("TextBox1")) as TextBox;
            }
        }
    }
}

FindControl函数应采用服务器控件的ID，而不是呈现的客户端控件的ID。您应该能够做到这一点：

var txt = item.FindControl("TextBox1") as TextBox;
if (txt != null) 
{
    // found it!
}

要调整代码，请执行以下操作：

foreach (RepeaterItem item1 in ParentRepeater.Items)
{
    if (item1.ItemType == ListItemType.Item || item1.ItemType == ListItemType.AlternatingItem)
    {
        ChildRepeater = (Repeater)item1.FindControl("ChildRepeater");

        foreach (RepeaterItem item2 in ChildRepeater.Items)
        {
            if (item2.ItemType == ListItemType.Item || item2.ItemType == ListItemType.AlternatingItem)
            {
                 TextBox txt = (TextBox)item2.FindControl(("TextBox1")) as TextBox;
            }
        }
    }
}

---

首先，您应该在要在其中查找控件的中继器上使用FindControl，例如，ParentRepeater.FindControlName，而不是this.FindControl

---

其次，您应该使用控件的ID，而不是客户端ID—这是一个不同的beast。

首先，您应该在要在其中查找控件的中继器上使用FindControl—例如，ParentRepeater.FindControl ControlName—而不是this.FindControl

其次，您应该使用控件的ID，而不是客户机ID——这是一个不同的beast