0
我有以下嵌套结构。我需要的是根据RadioButtonList选项的值从后面的CustomControl1代码中过滤一个DB Linq查询。如何从嵌套内部控件查找外部控件
x MainPage1
x---- Panel1 (modal popup)
x--------- UpdatePanel (upMailOrStatusAction, on Panel1)
x-------------- RadioButtonList (rblActionLevel, on UpdatePanel)
x-------------- SubForm1 (on Panel1)
x------------------- CustomControl1 (on Subform1)
x------------------------ DropDownList (on CustomControl1)
我想类似下面找到了控制，但它说：“‘upMailOrStatusAction’这个名字不会在目前情况下存在。
RadioButtonList rbl = upMailOrStatusAction.FindControl("rblActionLevel") as RadioButtonList;
什么是找到最好的办法？！RadioButtonList控件是的，我与这个相当新
谢谢 吉姆萨瓦尼，GA
好，这里是弹出ASPX：
<asp:Panel ID="pnlAddMailOrStatusAction" runat="server" CssClass="modalPopupLarge" Style="display: none;">
<asp:UpdatePanel ID="upMailOrStatusAction" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="false" RenderMode="Block">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="rblActionType" />
</Triggers>
<ContentTemplate>
<div class="borderDiv">
<table class="borderTable0" cellpadding="0" cellspacing="0" width="100%">
<thead>
<tr align="left">
<th colspan="9">Action Detail</th>
</tr>
</thead>
<tbody>
<tr>
<td colspan="1">
<label class="labelfield">Action Level:</label>
</td>
<td colspan="1" rowspan="1" align="left">
<asp:RadioButtonList ID="rblActionLevel" runat="server" AutoPostBack="True" RepeatDirection="Horizontal"
RepeatLayout="Flow">
<asp:ListItem Selected="True" Value="Base" Text="Base " />
<asp:ListItem Value="Coverage" Text="Coverage" />
</asp:RadioButtonList>
</td>
<td colspan="1" align="left">
<asp:Label ID="lblMSCoverage" runat="server" class="labelfield" Text="Coverage:" />
</td>
<td colspan="1" align="left">
<asp:Label ID="txtMSCoverage" runat="server" />
</td>
<td colspan="5">
</td>
</tr>
<tr>
<td colspan="9">
<hr />
</td>
</tr>
<tr>
<td colspan="9">
<st:MailAddSubform runat="server" ID="mailAddSubform" />
<st:StatusActionAddSubform runat="server" ID="statusActionAddSubform" Visible="false" />
</td>
</tr>
<tr>
<td colspan="9">
<hr />
</td>
</tr>
</tbody>
</table>
</div>
</ContentTemplate>
</asp:UpdatePanel>
</asp:Panel>
这里是子窗体的aspx：
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="MailAddSubform.ascx.cs"
Inherits="Company.Solutions.Web.Controls.MailAddSubform" %>
最后，这里是背后的定制控件的代码。查找StackOverflow以查找单选按钮列表：
using System;
using System.Collections.Generic;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Linq.Expressions;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using Company.Solutions.Data;
using Company.Solutions.Data.Model;
using Company.Solutions.Business.ViewModels;
using Company.Solutions.Business.Helpers;
namespace Comapny.Solutions.Web.Controls
{
public partial class StMailActionLookup : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
BindForm();
}
protected void BindForm()
{
IEnumerable actions = GetClaimMailActions(GetFilter());
ddlLookup.DataSource = actions;
ddlLookup.DataTextField = "CodeAndDescription";
ddlLookup.DataValueField = "actionCd";
ddlLookup.DataBind();
}
//protected void ddlLookup_DataBound1(object sender, System.EventArgs e)
//{
// ddlLookup.Items.Insert(0, new ListItem("<Please Choose an Action>", String.Empty));
//}
private MailActionFilters GetFilter()
{
MailActionFilters filters = new MailActionFilters();
if (chkForms.Checked)
filters |= MailActionFilters.Forms;
if (chkRequested.Checked)
filters |= MailActionFilters.RequestedInfo;
if (chkOther.Checked)
filters |= MailActionFilters.Other;
return filters;
}
public IEnumerable GetClaimMailActions(MailActionFilters filter)
{
RelationalDataContext db = RelationalDataContext.Create();
List<Expression<Func<ClaimMailAction, bool>>> predicates = new List<Expression<Func<ClaimMailAction, bool>>>();
const string MAIL_ACTIONS = "0";
const char FORMS = 'F';
const char REQUESTED_INFO = 'R';
const char EXCLUDE = 'X';
//StackOverflow help
//RadioButtonList rbl = (RadioButtonList) Control.Parent.FindControl("rblActionLevel");
if ((!chkForms.Checked && !chkRequested.Checked && !chkOther.Checked) | (chkForms.Checked && chkRequested.Checked && chkOther.Checked))
{
predicates.Add(cma => cma.ActionCd.StartsWith(MAIL_ACTIONS) && (cma.EsolutionsCode == null || cma.EsolutionsCode!= EXCLUDE));
} else {
if((filter & MailActionFilters.Forms) == MailActionFilters.Forms)
predicates.Add(cma => cma.ActionCd.StartsWith(MAIL_ACTIONS) && cma.EsolutionsCode == FORMS);
if((filter & MailActionFilters.RequestedInfo) == MailActionFilters.RequestedInfo)
predicates.Add(cma => cma.ActionCd.StartsWith(MAIL_ACTIONS) && cma.EsolutionsCode == REQUESTED_INFO);
if((filter & MailActionFilters.Other) == MailActionFilters.Other)
predicates.Add(cma => cma.ActionCd.StartsWith(MAIL_ACTIONS) && (cma.EsolutionsCode == null || (cma.EsolutionsCode != EXCLUDE && cma.EsolutionsCode != FORMS && cma.EsolutionsCode != REQUESTED_INFO)));
}
var predicate = PredicateBuilder.Make<ClaimMailAction>();
predicates.ForEach(delegate(Expression<Func<ClaimMailAction, bool>> expr)
{
predicate = predicate.Or(expr);
});
var qry = db.ClaimMailActions.Where(predicate).Select(c => new { c.ActionCd, CodeAndDescription = string.Format("{0} - {1}", c.ActionCd, c.ActionDesc) });
return qry.ToList();
}
}
}
新的代码列表。我的同事将这个用于另一个查找。有人能告诉我如何为这个查找做类似的事吗？即使效率低下，如果它的效果如此。
HtmlForm form;
foreach(var ctl in Page.Controls[0].Controls)
{
if(ctl is HtmlForm)
{
form = ctl as HtmlForm;
ContentPlaceHolder holder = form.FindControl("DefaultContent") as ContentPlaceHolder;
if (holder != null)
{
PlaceHolder paymentControlHolder = holder.FindControl("plcPaymentForm") as PlaceHolder;
if (paymentControlHolder != null)
{
IListener listener;
foreach (var c in paymentControlHolder.Controls)
{
if (c is IListener)
{
listener = c as IListener;
rblPaymentType.SelectedIndexChanged += listener.AddHandler();
}
}
}
}
}
}
好吧，我想这一点，但还没有完全想通了，但如何确定单选按钮的选定值：
HtmlForm form;
foreach (var ctl in Page.Controls[0].Controls) {
if (ctl is HtmlForm) {
form = ctl as HtmlForm;
ContentPlaceHolder holder = form.FindControl("DefaultContent") as ContentPlaceHolder;
if (holder != null) {
RadioButtonList rblControlHolder = holder.FindControl("rblActionLevel") as RadioButtonList;
if (rblControlHolder != null) {
}
}
}
}
Juri， 目标仅仅是确定单选按钮值，以便我可以修改我的查询以相应地填充下拉列表。我会尝试你的查询以及它可能派上用场。 谢谢！ Jim – James 2009-09-03 12:58:22
如果你的radiobuttonlist在你的用户控件或页面上，你应该可以直接访问它，不是吗？或者至少是它的容器元素。我真的不明白为什么你必须从页面向下遍历所有内容。 – Juri 2009-09-03 13:08:01
顺便说一句，下面的代码可以通过调用我的FindControlRecursive（this.Page，“rblActionLevel”）作为RadioButtonList来解决，尽管我仍然坚信有一个简单的方法。 – Juri 2009-09-03 13:08:50