Question

我想用数据库使文本框自动完成。我使用了以下代码，但在输出扩展程序中显示了html代码。它甚至不执行函数后面的代码。以下代码我使用了无法正常工作的代码。

ASPx页面

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="CS.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>

<!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:ScriptManager ID="ScriptManager1" runat="server" 
EnablePageMethods = "true">
</asp:ScriptManager>

<asp:TextBox ID="txtContactsSearch" runat="server"></asp:TextBox>
<cc1:AutoCompleteExtender ServiceMethod="SearchCustomers" 
    MinimumPrefixLength="2"
    CompletionInterval="100" EnableCaching="false" CompletionSetCount="10" 
    TargetControlID="txtContactsSearch"
    ID="AutoCompleteExtender1" runat="server" FirstRowSelected = "false">
</cc1:AutoCompleteExtender>
    </div>
    </form>
</body>
</html>

C＃代码

[System.Web.Script.Services.ScriptMethod()]
[System.Web.Services.WebMethod]
public static List<string> SearchCustomers(string prefixText, int count)
{
    using (MySqlConnection conn = new MySqlConnection())
    {
        conn.ConnectionString = ConfigurationManager
                .ConnectionStrings["conio"].ConnectionString;
        using (MySqlCommand cmd = new MySqlCommand())
        {
            cmd.CommandText = "select clientID from clientsDetails where "  +
            "clientID like @SearchText + '%'";
            cmd.Parameters.AddWithValue("@SearchText", prefixText);
            cmd.Connection = conn;
            conn.Open();
            List<string> customers = new List<string>();
            using (MySqlDataReader sdr = cmd.ExecuteReader())
            {
                while (sdr.Read())
                {
                    customers.Add(sdr["clientID"].ToString());
                }
            }
            conn.Close();
            return customers;
        }
    }
}

Answer 1

您正在查看网址上包含TextBox的网页：

http://localhost:64890/CS

这似乎是由route映射到页面

CS.aspx

当AutoCompleteExtender发送AJAX请求时，它会将其发送到此地址：

http://localhost:64890/CS/SearchCustomers

这可能是由您设置的某些route选取的，结果是它没有转到PageMethod中的CS.aspx.cs，而是在其他一些地方处理方式。

假设您的CS.aspx页面位于Web应用程序根文件夹中，您可以通过添加以下内容来修复它：

ServicePath="~/CS.aspx"

给你AutoCompleteExtender。像这样：

<cc1:AutoCompleteExtender ServiceMethod="SearchCustomers"
    MinimumPrefixLength="2"
    ServicePath="~/CS.aspx"
    CompletionInterval="100" EnableCaching="false" CompletionSetCount="10"
    TargetControlID="txtContactsSearch"
    ID="AutoCompleteExtender1" runat="server" FirstRowSelected="false">
</cc1:AutoCompleteExtender>

Answer 2

$ dbus-monitor --system type=signal,interface=org.freedesktop.NetworkManager,member=Device{Added,Removed}

Asp.net自动完成Extender无法正常工作

2 个答案: