C# TreeGridView 实现进程列表

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);
//排除掉无法访问的
if (processHandle != IntPtr.Zero)
{
pe.processHandle = processHandle;
list.Add(pe);
}
else
{
var err = Marshal.GetLastWin32Error();
applist.Add(new AppProcess { 进程ID = pe.th32ProcessID, 文件名 = pe.szExeFile, 父级进程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 { 制造商 = manifuture, 进程ID = p.th32ProcessID, 文件名 = baseName, 自身描述 = description, 文件路径 = path, 父级进程ID = p.th32ParentProcessID > 0 ? p.th32ParentProcessID : (uint?)null });
}
else
{
var err = Marshal.GetLastWin32Error();
Console.WriteLine("进程" + p + " 获取模块路径失败。错误代码" + err);
}
}
return applist;
}

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

private void SetNodes(IEnumerable<AppProcess> rootList, TreeGridNodeCollection nodes)
{
foreach (var item in rootList)
{
var node = nodes.Add(item.文件名, item.进程ID, item.文件路径, item.制造商, item.自身描述);
node.ImageIndex = 0;
SetNodes(item.SubItems, node.Nodes);
}
}