c# - 无法按照教程创建动态搜索结果

Question

我正在遵循this教程，以在用户键入时从SQL Server创建动态搜索结果。它告诉我创建一个.asmx文件，该文件不是我以前使用过的格式。这是我到目前为止的代码:

WebService.asmx.cs:

public class SearchService : WebService
{
  [WebMethod]
  public searchResult[] Search(string txtSearch)
  {
//Declare collection of searchResult
        List resultList = new List();
        var db = Database.Open("mPlan");
        var result = db.Query("SELECT * from Users where Username like '%" + txtSearch + "%'");
       try
       {
           foreach(var record in result)
            {
               searchResult result = new searchResult();
               result.Username = ["Username"].ToString();
               resultList.Add(result);
           }
           return resultList.ToArray();
       }
       catch
       {
           return null;
       }
  }}

WebService.asmx:

<%@ WebService Language="C#" class="WebService.asmx.cs" %>
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.Services;
using System.Data.SqlClient;

[System.Web.Script.Services.ScriptService]
[System.Web.Script.Services.GenerateScriptType(typeof(searchResult))]
public class searchResult
{
    public string Title;
    public string img;
    public string href;
}

这是我的错误消息，有人可以帮助我吗？

Compiler Error Message: BC30689: Statement cannot appear outside of a method body

Answer 1

您的Web方法必须在一个类中声明，并且属性必须装饰该类。

[System.Web.Script.Services.ScriptService]
[System.Web.Script.Services.GenerateScriptType(typeof(searchResult))]
public class SearchService : WebService
{
  [WebMethod]
  public searchResult[] Search(string txtSearch)
  {
     // ...
  }
}