如何将控件clientID添加到请求中.回寄时收集表格
How can I add control clientID to the Request.Form collection while posting back
需要尽快帮助.....
我有一个Gridview，其中的列大多是"Itemtemplates"，没有任何特定的ID分配给他们，除了客户端ID给他们内部的控件呈现时。
我目前正在更改现有的页面和几个客户端Id的控件在网格视图中出现在请求。形成收集，很少不收集。我需要将客户端ID添加到请求。表单集合，并在返回到服务器时从那里访问它的值。
控件如何/何时添加到请求中。形式收集?我对此感到困惑。如有任何帮助，我将不胜感激。
感谢向网格添加动态列的代码:
else if (Mode != ProductGridMode.Search)
{
grid.Columns.Add(CreateTemplateField(
path + "ProductDetailHeader.ascx",
path + "ProductDetailCell.ascx"));
grid.Columns.Add(CreateTemplateField(
path + "CustomerPartNumberHeader.ascx",
path + "CustomerPartNumberCell.ascx", "td-partnumber"));
grid.Columns.Add(CreateTemplateField(
path + "OrderQuantityHeader.ascx",
path + "OrderQuantityCell.ascx", "td-qty"));
if (Mode == ProductGridMode.OrderHistoryPayments
|| Mode == ProductGridMode.OrderHistoryPaymentsPrintView)
{
grid.Columns.Add(CreateTemplateField(
path + "AvailableToShipHeader.ascx",
path + "AvailableToShipCell.ascx"));
}
grid.Columns.Add(CreateTemplateField(
path + "PriceHeader.ascx",
path + "PriceCell.ascx", "td-price"));
grid.Columns.Add(CreateTemplateField(
path + "ExtendedPriceHeader.ascx",
path + "ExtendedPriceCell.ascx", "td-ext-price"));
if (Mode == ProductGridMode.OrderHistory || Mode == ProductGridMode.OrderHistoryPrintView
|| Mode == ProductGridMode.OrderHistoryPayments || Mode == ProductGridMode.OrderHistoryPaymentsPrintView)
{
grid.Columns.Add(CreateTemplateField(
path + "InvoiceHeader.ascx",
path + "InvoiceCell.ascx"));
grid.EmptyDataTemplate = LoadTemplate(path + "EmptyDataTemplate.ascx");
}
}
else
{
grid.Columns.Add(CreateTemplateField(
path + "ImageHeader.ascx",
path + "ImageCell.ascx"));
grid.Columns.Add(CreateTemplateField(
path + "MouserPartNumberHeader.ascx",
path + "MouserPartNumberCell.ascx"));
grid.Columns.Add(CreateTemplateField(
path + "MfrPartNumberHeader.ascx",
path + "MfrPartNumberCell.ascx"));
grid.Columns.Add(CreateTemplateField(
path + "ManufacturerHeader.ascx",
path + "ManufacturerCell.ascx"));
grid.Columns.Add(CreateTemplateField(
path + "DescriptionHeader.ascx",
path + "DescriptionCell.ascx"));
grid.Columns.Add(CreateTemplateField(
path + "DocumentHeader.ascx",
path + "DocumentCell.ascx"));
grid.Columns.Add(CreateTemplateField(
path + "AvailabilityHeader.ascx",
path + "AvailabilityCell.ascx"));
grid.Columns.Add(CreateTemplateField(
path + "PricingHeader.ascx",
path + "PricingCell.ascx"));
grid.Columns.Add(CreateTemplateField(
path + "QuantityHeader.ascx",
path + "QuantityCell.ascx"));
grid.Columns.Add(CreateTemplateField(
path + "OrderInfoHeader.ascx",
path + "OrderInfoCell.ascx"));
grid.Columns.Add(CreateTemplateField(
path + "RoHSHeader.ascx",
path + "RoHSCell.ascx"));
// Don't include Select column in count
Search_TemplateColumnCount = grid.Columns.Count - CellOffset;
// Due to their nature, the dynamic columns must be created as late as possible which is
// right before databinding instead of here.
}
aspx用于在其中一个项模板(我关心的那个)中使用的用户控件
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="MfrPartNumberCell.ascx.cs"
Inherits="Controls_ProductGridTemplates_Search_MfgPartNumberCell" WhitespaceCleaning="Clean" %>
<div style="text-align: left;">
<%--<asp:Literal ID="litMfrPartNumber" runat="server" Text='<%# Bind("MfrPartNumber") %>' /><br />--%>
<asp:HyperLink ID="MfrPartNumberLink" runat="server" Text='<%# Bind("MfrPartNumber") %>'
OnDataBinding="MfrPartNumberLink_DataBinding" /><br />
<br />
<asp:HyperLink ID="lnkCrossReference" runat="server" CssClass="highlight" Style="color: #FF6600"
Target="_blank" OnDataBinding="lnkCrossReference_DataBinding" />
<div style="width: 100%; text-align: center;">
<asp:PlaceHolder ID="PHlifecycle" runat="server"></asp:PlaceHolder>
</div>
</div>
用户控制的背后代码:
public partial class Controls_ProductGridTemplates_Search_MfgPartNumberCell : System.Web.UI.UserControl
{
protected void Page_PreRender(object sender, EventArgs e)
{
lnkCrossReference.Visible = (lnkCrossReference.NavigateUrl != string.Empty);
}
protected void MfrPartNumberLink_DataBinding(object sender, EventArgs e)
{
SearchResultItem searchItem = BusinessHelper.GetDataItem(this) as SearchResultItem;
MfrPartNumberLink.NavigateUrl = BusinessHelper.BuildProductDetailUrl(searchItem);
//life cycle
if (searchItem.LifeCycle != "")
{
if (!(searchItem.XXXX== false && searchItem.LifeCycle.ToLower().Trim() == "new at mouser"))
{
string lifecycleInfo = Mouser.BOM.ExcelHelper.ProductRules.BuildLifecycleText(searchItem.LifeCycle);
if (lifecycleInfo != "")
PHlifecycle.Controls.Add(new LiteralControl(lifecycleInfo + "<br/><br/>"));
}
}
}
protected void lnkCrossReference_DataBinding(object sender, EventArgs e)
{
SearchResultItem searchItem = BusinessHelper.GetDataItem(this) as SearchResultItem;
if (!string.IsNullOrEmpty(searchItem.CrossReference))
{
StringBuilder crossRefUrlBuilder = new StringBuilder();
crossRefUrlBuilder.Append("~/Search/CrossPopUp.aspx?xpn=");
crossRefUrlBuilder.Append(HttpUtility.UrlEncode(searchItem.MfrPartNumber));
crossRefUrlBuilder.Append("&criteria=");
crossRefUrlBuilder.Append(HttpUtility.UrlEncode(searchItem.CrossReference));
lnkCrossReference.NavigateUrl = crossRefUrlBuilder.ToString();
lnkCrossReference.Attributes.Add("onclick",
"javascript:window.open('" + ResolveUrl(lnkCrossReference.NavigateUrl)
+ "','CatalogPage', 'height=300,width=400,toolbars=no,menubar=no,location=no');return false;");
lnkCrossReference.Text = String.Format(Resources.MyCXXXX.lnkCrossReference, searchItem.CrossReference);
}
}
}
任何HTML form中的HTML input控件都将包含在Request.Form集合中。这些值包含在POST操作的HTTP报头中。
HTTP Headers for Dummies
编辑:添加代码
default . aspx
<%@ Page Title="Home Page" Trace="true" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"
CodeBehind="Default.aspx.cs" Inherits="SO8362448._Default" %>
<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent"> </asp:Content> <asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<asp:GridView ID="gridView" runat="server" OnRowDataBound="gridView_rowDataBound" AutoGenerateColumns="false">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Literal runat="server" Text='<%# Eval("Name") %>' />
<asp:LinkButton id="hyperLink" runat="server" Text="Click Me" />
<asp:HiddenField ID="hiddenField" runat="server" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView> </asp:Content>
default.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace SO8362448
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
gridView.DataSource = new List<Person>
{
new Person {Name = "Steve", Age = 21},
new Person {Name = "Cindy", Age = 34}
};
gridView.DataBind();
}
protected void gridView_rowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
LinkButton lb = e.Row.FindControl("hyperLink") as LinkButton;
if (lb != null)
{
HiddenField hf = e.Row.FindControl("hiddenField") as HiddenField;
if (hf != null)
{
hf.Value = lb.Text;
}
}
}
}
}
}
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