C# TreeGridView 實現進程列表

標籤：

效果

 

0x01 擷取進程列表，使用Win32Api規避"拒絕訪問"異常

public List<AppProcess> GetAppProcesses()        {            IntPtr handle = NativeMethods.CreateToolhelp32Snapshot(0x2, 0);            List<ProcessEntry32> list = new List<ProcessEntry32>();            List<AppProcess> applist = new List<AppProcess>();            if ((int)handle > 0)            {                ProcessEntry32 pe32 = new ProcessEntry32();                pe32.dwSize = (uint)Marshal.SizeOf(pe32);                int bMore = NativeMethods.Process32First(handle, ref pe32);                while (bMore == 1)                {                    ProcessEntry32 pe = pe32.MarshalEx();                    //排除掉[System Process]                    if (pe.th32ProcessID > 0)                    {                        IntPtr processHandle = NativeMethods.OpenProcess(NativeMethods.PROCESS_ALL_ACCESS, true, pe.th32ProcessID);                        //排除掉無法訪問的                        if (processHandle != IntPtr.Zero)                        {                            pe.processHandle = processHandle;                            list.Add(pe);                        }                        else                        {                            var err = Marshal.GetLastWin32Error();                            applist.Add(new AppProcess { 進程ID = pe.th32ProcessID, 檔案名稱 = pe.szExeFile, 父級進程ID = pe.th32ParentProcessID });                        }                    }                    bMore = NativeMethods.Process32Next(handle, ref pe32);                }            }            NativeMethods.CloseHandle(handle);            foreach (ProcessEntry32 p in list)            {                var processHandle = p.processHandle;                var winExePath = new StringBuilder(512);                var len = NativeMethods.GetModuleFileNameEx(processHandle, IntPtr.Zero, winExePath, (uint)winExePath.Capacity);                if (len > 0)                {                    var path = winExePath.ToString();                    var baseName = p.szExeFile;                    var description = "";                    var manifuture = "";                    try                    {                        var err = 0;                        var baseNameSb = new StringBuilder(128);                        var nameLen = NativeMethods.GetModuleBaseName(new SafeProcessHandle(processHandle, false), 0, baseNameSb, baseNameSb.Capacity);                        if (nameLen > 0)                        {                            baseName = baseNameSb.ToString();                        }                        else                        {                            err = Marshal.GetLastWin32Error();                        }                        PROCESS_BASIC_INFORMATION pbi = new PROCESS_BASIC_INFORMATION();                        int sizeInfoReturned;                        int queryStatus = NativeMethods.NtQueryInformationProcess(processHandle, (PROCESSINFOCLASS)0, ref pbi, Marshal.SizeOf(pbi), out sizeInfoReturned);                        NativeMethods.CloseHandle(processHandle);                        var peb = pbi.PebBaseAddress;                        FileVersionInfo info = FileVersionInfo.GetVersionInfo(path);                        description = info.FileDescription;                        manifuture = info.CompanyName;                    }                    catch (FileNotFoundException)                    {                    }                    catch (Exception ex)                    {                    }                    applist.Add(new AppProcess { 製造商 = manifuture, 進程ID = p.th32ProcessID, 檔案名稱 = baseName, 自身描述 = description, 檔案路徑 = path, 父級進程ID = p.th32ParentProcessID > 0 ? p.th32ParentProcessID : (uint?)null });                }                else                {                    var err = Marshal.GetLastWin32Error();                    Console.WriteLine("進程" + p + " 擷取模組路徑失敗。錯誤碼" + err);                }            }            return applist;        }

 

0x02 遞迴將列錶轉為樹結構

private void SetSubItems(IEnumerable<AppProcess> rootList, IEnumerable<AppProcess> plist)        {            foreach (var rootItem in rootList)            {                foreach (var item in plist)                {                    if (item.父級進程ID == rootItem.進程ID)                    {                        rootItem.SubItems.Add(item);                    }                }                SetSubItems(rootItem.SubItems, plist);            }        }

 

0x03 遞迴樹結構綁定到控制項節點

private void SetNodes(IEnumerable<AppProcess> rootList, TreeGridNodeCollection nodes)        {            foreach (var item in rootList)            {                var node = nodes.Add(item.檔案名稱, item.進程ID, item.檔案路徑, item.製造商, item.自身描述);                node.ImageIndex = 0;                SetNodes(item.SubItems, node.Nodes);            }        }

 

群共用擷取源碼 .Net軟體小組 283590657

C# TreeGridView 實現進程列表