public static void InitQueryHelper(out ISearchQueryHelper queryHelper, ISearchManager manager, int maxCount, bool displayHiddenFiles)
{
if (manager == null)
{
throw new ArgumentNullException(nameof(manager));
}
// SystemIndex catalog is the default catalog in Windows
ISearchCatalogManager catalogManager = manager.GetCatalog("SystemIndex");
// Get the ISearchQueryHelper which will help us to translate AQS --> SQL necessary to query the indexer
queryHelper = catalogManager.GetQueryHelper();
// Set the number of results we want. Don't set this property if all results are needed.
queryHelper.QueryMaxResults = maxCount;
// Set list of columns we want to display, getting the path presently
queryHelper.QuerySelectColumns = "System.ItemUrl, System.FileName, System.FileAttributes";
// Set additional query restriction
queryHelper.QueryWhereRestrictions = "AND scope='file:'";
if (!displayHiddenFiles)
{
// https://docs.microsoft.com/en-us/windows/win32/search/all-bitwise
queryHelper.QueryWhereRestrictions += " AND System.FileAttributes <> SOME BITWISE " + _fileAttributeHidden;
}
// To filter based on title for now
queryHelper.QueryContentProperties = "System.FileName";
// Set sorting order
queryHelper.QuerySorting = "System.DateModified DESC";
}
static void Main(string[] args)
{
if (args.Length < 1)
{
Console.WriteLine("Usage: ds [file search pattern] [userQuery]");
Console.WriteLine("[file search pattern] can include '*' and '?' wildcards");
Console.WriteLine("[userQuery] query to look for inside the document (with operators of OR, AND). Optional.");
return;
}
// First parameter is file name pattern
var pattern = args[0];
var userQuery = " ";
// Everything else is considered to be a search query
for (var i = 1; i < args.Length; i++)
{
userQuery += args[i] + " ";
}
// This uses the Microsoft.Search.Interop assembly
var manager = new ISearchManager();
// SystemIndex catalog is the default catalog in Windows
var catalogManager = manager.GetCatalog("SystemIndex");
// Get the ISearchQueryHelper which will help us to translate AQS --> SQL necessary to query the indexer
var queryHelper = catalogManager.GetQueryHelper();
// Set the number of results we want. Don't set this property if all results are needed.
queryHelper.QueryMaxResults = 10;
// Set list of columns we want
queryHelper.QuerySelectColumns = "System.ItemPathDisplay";
// Set additional query restriction
queryHelper.QueryWhereRestrictions = "AND scope='file:'";
// convert file pattern if it is not '*'. Don't create restriction for '*' as it includes all files.
if (pattern != "*")
{
pattern = pattern.Replace("*", "%");
pattern = pattern.Replace("?", "_");
if (pattern.Contains("%") || pattern.Contains("_"))
{
queryHelper.QueryWhereRestrictions += " AND System.FileName LIKE '" + pattern + "' ";
}
else
{
// if there are no wildcards we can use a contains which is much faster as it uses the index
queryHelper.QueryWhereRestrictions += " AND Contains(System.FileName, '" + pattern + "') ";
}
}
// Set sorting order
queryHelper.QuerySorting = "System.DateModified DESC";
// Generate SQL from our parameters, converting the userQuery from AQS->WHERE clause
var sqlQuery = queryHelper.GenerateSQLFromUserQuery(userQuery);
Console.WriteLine(sqlQuery);
// --- Perform the query ---
// create an OleDbConnection object which connects to the indexer provider with the windows application
using var conn = new OleDbConnection(queryHelper.ConnectionString);
// open the connection
conn.Open();
// now create an OleDB command object with the query we built above and the connection we just opened.
using var command = new OleDbCommand(sqlQuery, conn);
// execute the command, which returns the results as an OleDbDataReader.
using var WDSResults = command.ExecuteReader();
while (WDSResults.Read())
{
// col 0 is our path in display format
Console.WriteLine("{0}", WDSResults.GetString(0));
}
}