Windows 搜索 sql - 无法访问 System.Search.QueryFocusedSummary

我正在尝试使用 sql 查询 Windows Search 4.0。该物业 我感兴趣的是：System.Search.QueryFocusedSummary.

我正在尝试从 SystemIndex 读取此属性。我收到“列不存在”错误消息。我能够阅读其他专栏，例如：System.Search.AutoSummary.

我正在使用 Microsoft Windows Search 3.x SDK 下载 Windows 7 操作系统和 Windows 上的 (Windows.Search.Interop.dll) 搜索4.0。

我的查询是：
SELECT TOP 25 System.QueryFocusedSummary From SystemIndex where CONTAINS('microsoft') ORDER BY System.ItemDate DESC

我怎样才能让查询与System.Search.QueryFocusedSummary?

代码如下：

using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.OleDb;
using System.IO;
using System.Security.Permissions;
using System.Text;
using Microsoft.Search.Interop;

namespace QueryFocusedSummaryTest
{
    class Program
    [Stathread]
    static void Main(string[] args)
    {
        string sqlQuery = "select top 25 System.Search.QueryFocusedSummary from SystemIndex where contains('microsoft') order by System.ItemDate DESC";

        CSearchManager manager = new CSearchManager();
        ISearchCtalogManager catalogMaager = manager.GetCatalog("SystemIndex");
        ISearchQueryHelper queryHelper = catalogManager.GetQueryHelper();

        using (System.Data.OleDb.OleDbConnection conn = new OleDbConnection(queryHelper.ConnectionString))
        {
            conn.Open();

            using (OleDbCommand command = new OleDbCommand(sqlQuery, conn))
            {
                OleDbDataAdapter ds = new OleDbDataAdapter(command);
                DataSet ds = new DataSet();
                ds.Fill(ds);
                command.ExecuteNonQuery();
                //By now it has thrown the exception saying that the column is not found.
            }
        }
    }
} 

以下是有关 oledb 接口可用列的链接：

https://web.archive.org/web/20120615190325/http://www.ariankulp.com/downloads/WindowsShellOLEProperties.txt https://web.archive.org/web/20120615190325/http://www.ariankulp.com/downloads/WindowsShellOLEProperties.txt

Seems System.Search.QueryFocusedSummary没有暴露，同时System.Search.AutoSummary是。也许这就是您无法获取该专栏的原因。