Question

我是ASP.NET的新手，我正在我的应用程序中创建一个搜索框。

例如：如果用户在文本框中输入“abc”，则文本框将从数据库中获取以“abc”开头的数据。我将此数据传递给DataTable。

它运作正常，

这是我的代码段：

DataTable result = new DataTable();

protected void TextBox1_TextChanged(object sender, EventArgs e)
{
    connString = System.Configuration.ConfigurationManager.ConnectionStrings["MyConsString"].ConnectionString;
    SqlConnection conn = new SqlConnection(connString);
    conn.Open();

    string query = string.Format("SELECT DISTINCT Scrip FROM dbo.SearchBoxData where Scrip Like '{0}%'", TextBox1.Text);

    SqlCommand cmd = new SqlCommand(query, conn);

    result.Load(cmd.ExecuteReader());

    conn.Close();

    lvwItems.DataSource = result;
    lvwItems.DataBind();
}

现在，我想在<div>标记中检索所有这些数据。所以我尝试使用asp:ListView，

这是我的代码段，

它工作正常，但现在我想在用户选择listView的任何行时导航到新页面，但我无法选择任何行..

<asp:ListView ID="lvwItems" runat="server" ItemPlaceholderID="plhItems">
<LayoutTemplate>
    <div>
         <asp:PlaceHolder ID="plhItems" runat="server"></asp:PlaceHolder>
    </div>
</LayoutTemplate>
<ItemTemplate>
    <div>
        <%# Eval("Scrip")%>
    </div>
</ItemTemplate>

提前致谢!!

我们将不胜感激。

编辑：（SearchBox.aspx.cs）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;

public partial class SearchBox : System.Web.UI.Page
{
    string connString;
    DataTable result = new DataTable();

    protected void Page_Load(object sender, EventArgs e)
    { }

    protected void TextBox1_TextChanged(object sender, EventArgs e)
    {
        connString = System.Configuration.ConfigurationManager.ConnectionStrings["MyConsString"].ConnectionString;
        SqlConnection conn = new SqlConnection(connString);
        conn.Open();

        string query = string.Format("SELECT DISTINCT Scrip FROM dbo.SearchBoxData where Scrip Like '{0}%'", TextBox1.Text);

        SqlCommand cmd = new SqlCommand(query, conn);

        result.Load(cmd.ExecuteReader());

        conn.Close();

        lvwItems.DataSource = result;
        lvwItems.DataBind();
    }



    protected void lvwItems_SelectedIndexChanging(Object sender, ListViewSelectEventArgs e)
    {
        ListViewItem item = (ListViewItem)lvwItems.Items[e.NewSelectedIndex];
        Label lablId = (Label)item.FindControl("lablId");

        if (String.IsNullOrEmpty(lablId.Text))
        {
            Response.Redirect("NextPage.aspx?id=" + lablId.Text, false);
        }
    }

（SearchBox.aspx）

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="SearchBox.aspx.cs" Inherits="SearchBox" %>

<!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>

    </div>
    <asp:TextBox ID="TextBox1" runat="server" Height="30px" Width="179px" 
        OnTextChanged="TextBox1_TextChanged" AutoPostBack="true"></asp:TextBox>
&nbsp;&nbsp;&nbsp;<asp:Button ID="Button1" runat="server" Text="Go" 
        Width="62px" />
    &nbsp;<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>


  <asp:ListView ID="lvwItems" OnSelectedIndexChanging="lvwItems_SelectedIndexChanging" 
 runat="server" ItemPlaceholderID="plhItems">
 <LayoutTemplate>
  <div>
       <asp:PlaceHolder ID="plhItems" runat="server"></asp:PlaceHolder>
  </div>
 </LayoutTemplate>
  <ItemTemplate>
  <div>
 <%# Eval("Scrip")%>
    <asp:Label ID="lablId" visible="false" runat="server" Text='<%#Eval("Scrip") %>'/>

  </div>
</ItemTemplate>
</asp:ListView>

    <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
        ConnectionString="<%$ ConnectionStrings:krunal_DBConnectionString2 %>" 
        SelectCommand="SELECT * FROM [SearchBoxData]"></asp:SqlDataSource>
    </form>
</body>
</html>

Answer 1

您必须在ItemTemplate中添加一个SELECT按钮，请参阅完整的工作代码。

  <asp:ListView ID="lvwItems" OnSelectedIndexChanging="lvwItems_SelectedIndexChanging"
    runat="server" ItemPlaceholderID="plhItems">
    <LayoutTemplate>
        <div>
            <asp:PlaceHolder ID="plhItems" runat="server"></asp:PlaceHolder>
        </div>
    </LayoutTemplate>
    <ItemTemplate>
        <%# Eval("Scrip")%>
        <asp:LinkButton ID="SelectButton" runat="server" CommandName="Select" Text="Select" />
    </ItemTemplate>
  </asp:ListView>

protected void lvwItems_SelectedIndexChanging(Object sender, ListViewSelectEventArgs  e)
{
    ListViewItem item = (ListViewItem)lvwItems.Items[e.NewSelectedIndex];
    Label lablId = (Label)item.FindControl("CONTROL_ID");
}

由于

迪普

Answer 2

可能您必须为选定的索引更改添加事件：

<asp:ListView ID="lvwItems" runat="server" ItemPlaceholderID="plhItems" OnSelectedIndexChanging="lvwItems_SelectedIndexChanging">

Answer 3

在后面的代码中，您可以获得如下所示的选定行项目。

此外，您可以放置标签或隐藏字段，以便从这些控件中获取一些数据并将其传递到下一页..（可能是id或其他内容）。

   <asp:ListView ID="lvwItems" OnSelectedIndexChanging="lvwItems_SelectedIndexChanging" 
 runat="server" ItemPlaceholderID="plhItems">
 <LayoutTemplate>
  <div>
       <asp:PlaceHolder ID="plhItems" runat="server"></asp:PlaceHolder>
  </div>
 </LayoutTemplate>
  <ItemTemplate>
  <div>
    <%# Eval("Scrip")%>
     <asp:Label ID="lablId" visible="flase" runat="server" Text='<%#Eval("Id") %>' />
  </div>
</ItemTemplate>
</asp:ListView>

 void lvwItems_SelectedIndexChanging(Object sender, ListViewSelectEventArgs e)
 {
   ListViewItem item = (ListViewItem)lvwItems.Items[e.NewSelectedIndex];
   Label lablId = (Label)item.FindControl("lablId");

   if (String.IsNullOrEmpty(lablId.Text))
   {
     Response.Redirect("page.aspx?id="+lablId.Text,false);
   }
 }

由于

迪普

Answer 4

你走了，

同时从按钮中删除OnClick =“callMethod”。由于您有SelectedIndex方法，因此无需使用onClick方法。

protected void lvwItems_SelectedIndexChanging(Object sender, ListViewSelectEventArgs  e)
{
  ListViewItem item = (ListViewItem)lvwItems.Items[e.NewSelectedIndex];
  Button btn = (Button)item.FindControl("btn1");
  if(btn != null) 
  {
   var buttonText = btn.Text;  
  }
}

希望这有帮助

由于

迪普

selectView的listView在ASP.NET中不起作用

4 个答案: