利用Everything的DLL实现文件的搜索功能

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace EverythingSDK
{
    public partial class Form1 : Form
    {
        #region 引用定义
        const int EVERYTHING_OK = 0;
        const int EVERYTHING_ERROR_MEMORY = 1;
        const int EVERYTHING_ERROR_IPC = 2;
        const int EVERYTHING_ERROR_REGISTERCLASSEX = 3;
        const int EVERYTHING_ERROR_CREATEWINDOW = 4;
        const int EVERYTHING_ERROR_CREATETHREAD = 5;
        const int EVERYTHING_ERROR_INVALIDINDEX = 6;
        const int EVERYTHING_ERROR_INVALIDCALL = 7;

        [DllImport("Everything.dll")]
        public static extern int Everything_SetSearch(string lpSearchString);
        [DllImport("Everything.dll")]
        public static extern void Everything_SetMatchPath(bool bEnable);
        [DllImport("Everything.dll")]
        public static extern void Everything_SetMatchCase(bool bEnable);
        [DllImport("Everything.dll")]
        public static extern void Everything_SetMatchWholeWord(bool bEnable);
        [DllImport("Everything.dll")]
        public static extern void Everything_SetRegex(bool bEnable);
        [DllImport("Everything.dll")]
        public static extern void Everything_SetMax(int dwMax);
        [DllImport("Everything.dll")]
        public static extern void Everything_SetOffset(int dwOffset);

        [DllImport("Everything.dll")]
        public static extern bool Everything_GetMatchPath();
        [DllImport("Everything.dll")]
        public static extern bool Everything_GetMatchCase();
        [DllImport("Everything.dll")]
        public static extern bool Everything_GetMatchWholeWord();
        [DllImport("Everything.dll")]
        public static extern bool Everything_GetRegex();
        [DllImport("Everything.dll")]
        public static extern UInt32 Everything_GetMax();
        [DllImport("Everything.dll")]
        public static extern UInt32 Everything_GetOffset();
        [DllImport("Everything.dll")]
        public static extern string Everything_GetSearch();
        [DllImport("Everything.dll")]
        public static extern int Everything_GetLastError();

        [DllImport("Everything.dll")]
        public static extern bool Everything_Query();

        [DllImport("Everything.dll")]
        public static extern void Everything_SortResultsByPath();

        [DllImport("Everything.dll")]
        public static extern int Everything_GetNumFileResults();
        [DllImport("Everything.dll")]
        public static extern int Everything_GetNumFolderResults();
        [DllImport("Everything.dll")]
        public static extern int Everything_GetNumResults();
        [DllImport("Everything.dll")]
        public static extern int Everything_GetTotFileResults();
        [DllImport("Everything.dll")]
        public static extern int Everything_GetTotFolderResults();
        [DllImport("Everything.dll")]
        public static extern int Everything_GetTotResults();
        [DllImport("Everything.dll")]
        public static extern bool Everything_IsVolumeResult(int nIndex);
        [DllImport("Everything.dll")]
        public static extern bool Everything_IsFolderResult(int nIndex);
        [DllImport("Everything.dll")]
        public static extern bool Everything_IsFileResult(int nIndex);
        [DllImport("Everything.dll")]
        public static extern void Everything_GetResultFullPathName(int nIndex, StringBuilder lpString, int nMaxCount);
        [DllImport("Everything.dll")]
        public static extern void Everything_Reset();
        #endregion

        public Form1()
        {
            InitializeComponent();
        }

        private void btnQuery_Click(object sender, EventArgs e)
        {
            int i;
            const int bufsize = 260;
            StringBuilder buf = new StringBuilder(bufsize);

            Everything_SetSearch(txtKeyWord.Text);

            Everything_Query();

            listResult.Items.Clear();
         
            Text = txtKeyWord.Text + " - " + Everything_GetNumResults() + " 结果";

            for (i = 0; i < Everything_GetNumResults(); i++)
            {
                Everything_GetResultFullPathName(i, buf, bufsize);

                listResult.Items.Insert(i, buf);
            }
        }
    }
}