Click事件对于跨网页提交 [英] Click Event For Cross Page PostBack
本文介绍了Click事件对于跨网页提交的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有文本框和按钮 Search.aspx 页。在回发是 Results.aspx 里面有一个GridView。正如我与QueryDesigner检查它的SQL查询工作。
在理论上，伪搜索应通过键入一个值到文本框，然后点击按钮完成。当我输入一个值，然后单击，在 Results.aspx 网页打开，但是空白。
在单击事件的 Search.aspx 无非是：
保护无效Button2_Click（对象发件人，EventArgs五）{}
这个设置的确在Web项目中工作，但是，不会在网站上，它这是。这样看来，单击事件不被未提交值到 Results.aspx 页的工作。我有没有运气找到一个click事件，这将正常工作。我想AP preciate任何帮助。
编辑：SQL查询是复杂的，但正如我所说，当在查询设计器中输入一个值，它工作正常。我添加了空间来作为的.cs Web站点，而不是Web项目，通常没有命名空间。
Search.aspx
＆LT;％@页面语言=C＃AutoEventWireup =真codeBehind =Search.aspx.cs继承=LinqTest.Search％GT; ＆LT;％@注册大会=AjaxControlToolkit命名空间=AjaxControlToolkit标签preFIX =ASP％GT;
！＆LT; DOCTYPE HTML PUBLIC - // W3C // DTD XHTML 1.0过渡// ENhttp://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">
＆LT; HTML的xmlns =http://www.w3.org/1999/xhtml＆GT;
＆LT;头=服务器＆GT;
＆LT;标题＆GT;＆LT; /标题＆GT;
＆LT; /头＆GT;
＆LT;身体GT;
＆LT;表ID =form1的=服务器＆GT;
＆LT; DIV＆GT;
＆LT; ASP：文本框=服务器ID =名称＆GT;＆LT; / ASP：文本框＆GT;
＆LT; ASP：按钮的ID =Button1的=服务器文本=搜索一项PostBackUrl =〜/ Results.aspx/＆GT;＆LT; / DIV＆GT;
＆LT; /表及GT;
＆LT; /身体GT;
＆LT; / HTML＆GT;
Search.cs
使用系统;
使用System.Collections.Generic;
使用System.Linq的;
使用的System.Web;
使用System.Web.UI程序;
使用System.Web.UI.WebControls; 命名空间LinqTest
{
公共部分类搜索：System.Web.UI.Page
{
保护无效的Page_Load（对象发件人，EventArgs的发送）
{ } 保护无效的button1_Click（对象发件人，EventArgs的发送）
{ }
}
}
ResultsSearch.aspx
＆LT;％@页面语言=C＃AutoEventWireup =真codeFILE =ResultsSearch.aspx.cs继承=RecipeFaire.ResultsSearch％GT; ＆LT;％@注册大会=AjaxControlToolkit命名空间=AjaxControlToolkit标签preFIX =ASP％GT;
＆LT;％@ previousPageType VirtualPath =〜/ Search.aspx％GT;
！＆LT; DOCTYPE HTML PUBLIC - // W3C // DTD XHTML 1.0过渡// ENhttp://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">
＆LT; HTML的xmlns =http://www.w3.org/1999/xhtml＆GT;
＆LT;头ID =头像1=服务器＆GT;
＆LT;标题＆GT;＆LT; /标题＆GT;
＆LT; /头＆GT;
＆LT;身体GT;
＆LT;表ID =form1的=服务器＆GT;
＆LT;！ - 这是对search.aspx完成的搜索结果 - ＆GT;
＆LT; DIV＆GT;
＆LT; ASP：的ScriptManager ID =ScriptManager1=服务器＆GT;
＆LT; / ASP：ScriptManager的＆GT;
＆LT; ASP：ListView控件ID =ListView1的=服务器的DataKeyNames =RecipeID的DataSourceID =SqlDataSource1＆GT;
＆LT;＆ItemTemplate中GT;
＆所述; TR＆GT;
＆所述; TD行跨度=2＆GT;
＆LT; ASP：图片ID =Image1的=服务器WIDTH =100px的HEIGHT =80px的ImageUrl ='＆LT;％＃〜/ Handler.ashx RecipeID =？+的eval（RecipeID）％ ＆GT;' /＆GT;
＆LT; / TD＆GT;
＆LT; TD ROWSPAN =2WIDTH =100px的＆GT;
＆LT; ASP：等级ID =额定值1=服务器ALIGN =权利VALIGN =顶CurrentRating ='＆LT;％＃的eval（RatingAVG）％＆GT;'
MaxRating =5只读=真StarCssClass =ratingStarWaitingStarCssClass =savedRatingStar
FilledStarCssClass =filledRatingStarEmptyStarCssClass =emptyRatingStar＆GT;
＆LT; / ASP：评级＆GT;
＆安培;＆NBSP放大器;＆NBSP放大器;＆NBSP LT; BR＆GT;＆LT; / BR＆GT;
＆LT; ASP：标签ID =Label7=服务器ALIGN =右文本='＆LT;％＃的eval（计数）％GT;' /＆GT;＆安培;＆NBSP放大器; NBSP
＆LT; ASP：超链接ID =家FONT-SIZE =小=服务器NavigateUrl ='＆LT;％＃绑定（RecipeID，../../Comments.aspx?RecipeId={0 }）％GT;'
文本=评论/＆GT;
＆LT; / TD＆GT;
＆所述; TD＆GT;
＆LT; ASP：超链接ID =HyperLink2=服务器NavigateUrl ='＆LT;％＃绑定（RecipeID，PageLinkDetails.aspx RecipeId = {0}？）％GT;'
文字='＆LT;％＃的eval（RecipeName中）％＆GT;'＆GT;＆LT; / ASP：超链接＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆LT; TR风格=WIDTH：500px的＆GT;
＆所述; TD＆GT;
＆LT; ASP：标签ID =DescriptionLabelVALIGN =顶=服务器文本='＆LT;％＃的eval（说明）％GT;' /＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆所述; TR＆GT;
＆LT; TD合并单元格=10的风格=颜色：浅灰＆GT;
＆LT; ASP：标签ID =Label2的=服务器FONT-SIZE =1px的HEIGHT =1px的文本='＆LT;％＃的eval（RecipeID）％＆GT;'＆GT;＆LT; / ASP ：标签＆gt;
＆LT;小时风格=BORDER-风格：点/＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆LT; / ItemTemplate中＆GT;
＆LT;＆LayoutTemplate模板GT;
＆安培;＆NBSP放大器;＆NBSP放大器;＆NBSP放大器;＆NBSP放大器;＆NBSP放大器;＆NBSP放大器;＆NBSP放大器;＆NBSP放大器;＆NBSP放大器; NBSP               <asp:LinkButton
=服务器ID =SortByName的CommandName =排序CommandArgument =RecipeName中＆GT;排序配方名称和LT; / ASP：LinkButton的＆GT;
              
＆LT; ASP：LinkButton的=服务器ID =SortByPrice的CommandName =排序CommandArgument =RatingAVG＆GT;按评分排序＆LT; / ASP：LinkButton的＆GT;
＆LT;表ID =表1=服务器＆GT;
＆LT; TR ID =TR1=服务器＆GT;
＆LT; TD ID =TD1=服务器＆GT;
＆LT;表ID =itemPlaceholderContainer=服务器BORDER =0的风格=＆GT;
＆LT; TR ID =TR2=服务器的风格=＆GT;
百分位ID =Th1细胞=服务器＆GT;
＆LT; /第i
＆LT; / TR＆GT;
＆LT; TR ID =itemPlaceholder=服务器＆GT;
＆LT; / TR＆GT;
＆LT; /表＆gt;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆LT; TR ID =Tr3的=服务器＆GT;
＆LT; TD ID =TD2=服务器的风格=ALIGN =中心＆GT;
＆LT; ASP：DataPager的ID =DataPager2PagedControlID =ListView1的每页=8=服务器＆GT;
＆LT;＆领域GT;
＆LT; ASP：NumericPagerField ButtonCount =8/＆GT;
＆LT; /场＆GT;
＆LT; / ASP：DataPager的＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆LT; /表＆gt;
＆LT; / LayoutTemplate模板＆GT;
＆LT; / ASP：的ListView＆GT;
＆LT; ASP：SqlDataSource的ID =SqlDataSource1=服务器的ConnectionString =＆LT;％$的ConnectionStrings：RecipeUploadConnectionString％＆gt;中
的SelectCommand =SELECT pr.RecipeID，pr.CategoryName，pr.CategoryType，pr.RecipeName，pr.Description，COUNT（rr.RecipeID）AS计数，AVG（rr.Rating）AS RatingAVG
从PostedRecipes公关LEFT OUTER JOIN RecipeRatings例如RR ON pr.RecipeID = rr.RecipeID
WHERE pr.RecipeName LIKE'％'+ @RecipeName +'％'或pr.CategoryName LIKE'％'+ @CategoryName +'％'
OR pr.CategoryType LIKE'％'+ @CategoryType +'％'或pr.CuisineOrigin LIKE'％'+ @CuisineOrigin +'％'
OR pr.CuisineType LIKE'％'+ @CuisineType +'％'GROUP BY pr.RecipeID，pr.RecipeName，pr.CategoryName，pr.CategoryType，pr.CuisineOrigin，pr.CuisineType，pr.Description＆GT;
＆LT; SelectParameters＆GT;
＆LT; ASP：FormParameter FormField =RecipeName中NAME =RecipeName中类型=字符串/＆GT;
＆LT; ASP：FormParameter FormField =类别名称NAME =类别名称类型=字符串/＆GT;
＆LT; ASP：FormParameter FormField =CategoryTypeNAME =CategoryType类型=字符串/＆GT;
＆LT; ASP：FormParameter FormField =CuisineOriginNAME =CuisineOrigin类型=字符串/＆GT;
＆LT; ASP：FormParameter FormField =CuisineTypeNAME =CuisineType类型=字符串/＆GT;
＆LT; / SelectParameters＆GT;
＆LT; / ASP：SqlDataSource的＆GT;
＆LT; / DIV＆GT;
＆LT; /表及GT;
＆LT; /身体GT;
＆LT; / HTML＆GT;
ResultsSearch.cs
使用系统;
使用System.Data这;
使用System.Data.SqlClient的;
使用System.Configuration;
System.Collections中使用;
使用的System.Web;
使用System.Web.Security;
使用System.Web.UI程序;
使用System.Web.UI.WebControls;
使用System.Web.UI.WebControls.WebParts;
使用System.Web.UI.HtmlControls;
使用System.IO;
使用System.Text;
使用System.Web.SessionState;
命名空间RecipeFaire
{公共部分类ResultsSearch：System.Web.UI.Page
{
保护无效的Page_Load（对象发件人，EventArgs的发送）
{
}
}
}
解决方案
您绝对没有我们展示所有$ C $的C-落后，但我们假设你正在做的这个地方：
ListView1.DataSource = SqlDataSource1;
ListView1.DataBind（）;
你这样做之后，，然后您可以找到标签并设置其文本（不要在<$ C做到这一点$ C>的Page_Load 之前绑定）。
保护无效ListView1_ItemDataBound（对象发件人，ListViewItemEventArgs E）
{
如果（e.Item.ItemType == ListViewItemType.DataItem）
{
标签为recipename =（标签）e.Item.FindControl（labRecipeName）;
recipeName.Text =的Request.QueryString [RecipeName中]。的ToString（）
}
}
要使用的查询字符串值，你的的SqlDataSource ，使用 QueryStringParameter ：
＆LT; SelectParameters＆GT;
＆LT; ASP：QueryStringParameter NAME =RecipeName中QueryStringField =RecipeName中类型=字符串/＆GT;
＆LT; / SelectParameters＆GT;
I have a Search.aspx page with TextBox and Button. The postback is to Results.aspx which has a GridView. The Sql query works as I have checked it with QueryDesigner.
In theory, a pseudo-search should be done by typing a value into the text box and clicking the button. When I enter a value and click, the Results.aspx page opens but is blank.
The click event in the Search.aspx is nothing more than:
protected void Button2_Click(object sender, EventArgs e){}
This setup does work in a Web Project, however, will not in a Web Site, which this is. It would appear that the click event is not working by not submitting the value to the Results.aspx page. I have had no luck finding a click event which will work. I would appreciate any help.
EDIT: The sql query is complicated but as I said, it works fine when a value is entered in the Query Designer. I did add a "namespace" to the .cs as Web Sites, as opposed to Web Projects, normally do not have a namespace.
Search.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Search.aspx.cs" Inherits="LinqTest.Search" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox runat="server" ID="Name"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="Search" PostBackUrl="~/Results.aspx" />
</div>
</form>
</body>
</html>
Search.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace LinqTest
{
public partial class Search : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
}
}
}
ResultsSearch.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ResultsSearch.aspx.cs" Inherits="RecipeFaire.ResultsSearch" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<%@ PreviousPageType VirtualPath="~/Search.aspx" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<!-- this is the results of the search done on the search.aspx -->
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:ListView ID="ListView1" runat="server" DataKeyNames="RecipeID" DataSourceID="SqlDataSource1">
<ItemTemplate>
<tr>
<td rowspan="2">
<asp:Image ID="Image1" runat="server" Width="100px" Height="80px" ImageUrl='<%# "~/Handler.ashx?RecipeID=" + Eval("RecipeID")%>' />
</td>
<td rowspan="2" width="100px">
<asp:Rating ID="Rating1" runat="server" align="right" valign="top" CurrentRating='<%# Eval("RatingAVG")%>'
MaxRating="5" ReadOnly="true" StarCssClass="ratingStar" WaitingStarCssClass="savedRatingStar"
FilledStarCssClass="filledRatingStar" EmptyStarCssClass="emptyRatingStar">
</asp:Rating>
   <br></br>
<asp:Label ID="Label7" runat="server" align="right" Text='<%# Eval("Count") %>' />  
<asp:HyperLink ID="Home" Font-Size="Small" runat="server" NavigateUrl='<%# Bind("RecipeID", "../../Comments.aspx?RecipeId={0}") %>'
Text="Reviews" />
</td>
<td>
<asp:HyperLink ID="HyperLink2" runat="server" NavigateUrl='<%# Bind("RecipeID", "PageLinkDetails.aspx?RecipeId={0}") %>'
Text='<%# Eval("RecipeName") %>'></asp:HyperLink>
</td>
</tr>
<tr style="width: 500px">
<td>
<asp:Label ID="DescriptionLabel" valign="top" runat="server" Text='<%# Eval("Description") %>' />
</td>
</tr>
<tr>
<td colspan="5" style="color: LightGrey">
<asp:Label ID="Label2" runat="server" Font-Size="1px" Height="1px" Text='<%# Eval("RecipeID") %>'></asp:Label>
<hr style="border-style: dotted" />
</td>
</tr>
</ItemTemplate>
<LayoutTemplate>
                         <asp:LinkButton
runat="server" ID="SortByName" CommandName="Sort" CommandArgument="RecipeName">Sort By Recipe Name</asp:LinkButton>
              
<asp:LinkButton runat="server" ID="SortByPrice" CommandName="Sort" CommandArgument="RatingAVG">Sort By Rating</asp:LinkButton>
<table id="Table1" runat="server">
<tr id="Tr1" runat="server">
<td id="Td1" runat="server">
<table id="itemPlaceholderContainer" runat="server" border="0" style="">
<tr id="Tr2" runat="server" style="">
<th id="Th1" runat="server">
</th>
</tr>
<tr id="itemPlaceholder" runat="server">
</tr>
</table>
</td>
</tr>
<tr id="Tr3" runat="server">
<td id="Td2" runat="server" style="" align="center">
<asp:DataPager ID="DataPager2" PagedControlID="ListView1" PageSize="8" runat="server">
<Fields>
<asp:NumericPagerField ButtonCount="8" />
</Fields>
</asp:DataPager>
</td>
</tr>
</table>
</LayoutTemplate>
</asp:ListView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:RecipeUploadConnectionString %>"
SelectCommand="SELECT pr.RecipeID, pr.CategoryName, pr.CategoryType, pr.RecipeName, pr.Description, COUNT(rr.RecipeID) AS Count, AVG(rr.Rating) AS RatingAVG
FROM PostedRecipes AS pr LEFT OUTER JOIN RecipeRatings AS rr ON pr.RecipeID = rr.RecipeID
WHERE pr.RecipeName LIKE '%' + @RecipeName + '%' OR pr.CategoryName LIKE '%' + @CategoryName + '%'
OR pr.CategoryType LIKE '%' + @CategoryType + '%' OR pr.CuisineOrigin LIKE '%' + @CuisineOrigin + '%'
OR pr.CuisineType LIKE '%' + @CuisineType + '%' GROUP BY pr.RecipeID, pr.RecipeName, pr.CategoryName, pr.CategoryType, pr.CuisineOrigin, pr.CuisineType, pr.Description">
<SelectParameters>
<asp:FormParameter FormField="RecipeName" Name="RecipeName" Type="String"/>
<asp:FormParameter FormField="CategoryName" Name="CategoryName" Type="String" />
<asp:FormParameter FormField="CategoryType" Name="CategoryType" Type="String"/>
<asp:FormParameter FormField="CuisineOrigin" Name="CuisineOrigin" Type="String" />
<asp:FormParameter FormField="CuisineType" Name="CuisineType" Type="String"/>
</SelectParameters>
</asp:SqlDataSource>
</div>
</form>
</body>
</html>
ResultsSearch.cs
using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Text;
using System.Web.SessionState;
namespace RecipeFaire
{
public partial class ResultsSearch : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
}
解决方案
You definitely aren't showing us all of your code-behind, but we'll assume you are doing this somewhere:
ListView1.DataSource = SqlDataSource1;
ListView1.DataBind();
After you've done that, THEN you can find the Label and set its text (do not do this in the Page_Load prior to binding).
protected void ListView1_ItemDataBound(object sender, ListViewItemEventArgs e)
{
if (e.Item.ItemType == ListViewItemType.DataItem)
{
Label recipeName = (Label)e.Item.FindControl("labRecipeName");
recipeName.Text = Request.QueryString["RecipeName"].ToString()
}
}
To use a querystring value for your SqlDataSource, use a QueryStringParameter:
<SelectParameters>
<asp:QueryStringParameter Name="RecipeName" QueryStringField="RecipeName" Type="String" />
</SelectParameters>
这篇关于Click事件对于跨网页提交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！
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