使用C#的接口函数，提取进程的图标。把提取到的图标以进程名+“.con”保存至一个文件夹中。

 private void button1_Click(object sender, EventArgs e)
        {
            using (ManagementObjectSearcher managementObjectSearcher = new ManagementObjectSearcher("select ProcessId, Name, ExecutablePath from Win32_Process"))
            {
                using (var results = managementObjectSearcher.Get())
                {
                    var processes = results.Cast<ManagementObject>().Select(p => new
                    {
                        ProcessId = (UInt32)p["ProcessId"],
                        Name = (string)p["Name"],
                        ExecutablePath = (string)p["ExecutablePath"]
                    });
                    listView1.BeginUpdate();
                    foreach (var pro in processes)
                    {
                        if (System.IO.File.Exists(pro.ExecutablePath))
                        {
                            var icon = Icon.ExtractAssociatedIcon(pro.ExecutablePath);
                            var key = pro.ProcessId.ToString();
                            string[] ProcessName = pro.Name.Split(new char[] { '.' });
                            Icon myIcon = icon;
                            FileStream fileStream = new FileStream(@"bin\ico\"+ ProcessName[0] + ".ico", FileMode.Create);
                            myIcon.Save(fileStream);
                            fileStream.Close();
                            this.imageList1.Images.Add(key, icon.ToBitmap());
                            this.listView1.Items.Add(pro.Name, key);
                        }
                    }
                    listView1.EndUpdate();
                }
            }
        }