Windows Form Startup with Admin Permission

Question

I have a windows form application that need of the admin permission for running, to make this, I use this code:

Answer 1

I find the answer for run a application with admin permission at startup.

Basically I just created a task with run level Highest and your trigger is on Logon.

I found the code in vb in this repository: https://bitbucket.org/trparky/start_program_at_startup_without_uac

Sub addTask(taskName As String, taskDescription As String, taskEXEPath As String, taskParameters As String)
        taskName = taskName.Trim
        taskDescription = taskDescription.Trim
        taskEXEPath = taskEXEPath.Trim
        taskParameters = taskParameters.Trim

        If Not IO.File.Exists(taskEXEPath) Then
            MsgBox("Executable path not found.", MsgBoxStyle.Critical, Me.Text)
            Exit Sub
        End If

        Dim taskService As TaskService = New TaskService()
        Dim newTask As TaskDefinition = taskService.NewTask

        newTask.RegistrationInfo.Description = taskDescription

        If chkEnabled.Checked Then newTask.Triggers.Add(New LogonTrigger)

        Dim exeFileInfo As New FileInfo(taskEXEPath)

        newTask.Actions.Add(New ExecAction(Chr(34) & taskEXEPath & Chr(34), taskParameters, exeFileInfo.DirectoryName))

        newTask.Principal.RunLevel = TaskRunLevel.Highest
        newTask.Settings.Compatibility = TaskCompatibility.V2_1
        newTask.Settings.AllowDemandStart = True
        newTask.Settings.DisallowStartIfOnBatteries = False
        newTask.Settings.RunOnlyIfIdle = False
        newTask.Settings.StopIfGoingOnBatteries = False
        newTask.Settings.AllowHardTerminate = False
        newTask.Settings.UseUnifiedSchedulingEngine = True
        newTask.Settings.ExecutionTimeLimit = Nothing
        newTask.Settings.Priority = ProcessPriorityClass.Normal
        newTask.Principal.LogonType = TaskLogonType.InteractiveToken

        taskService.RootFolder.SubFolders(strTaskFolderName).RegisterTaskDefinition(taskName, newTask)

        newTask.Dispose()
        taskService.Dispose()
        newTask = Nothing
        taskService = Nothing
    End Sub

So all I did was translated this code to c# and make tests

using Microsoft.Win32.TaskScheduler;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CreateTaskTest
{
    class Program
    {
        static void Main(string[] args)
        {
            addTask();
            //deleteTask();
        }

        static void addTask()
        {
            // Get the service on the local machine
            using (TaskService ts = new TaskService())
            {
                // Create a new task definition and assign properties
                TaskDefinition newTask = ts.NewTask();
                newTask.RegistrationInfo.Description = "Rondinelli Morais Create Task";

                newTask.Triggers.Add(new LogonTrigger());

                newTask.Actions.Add(new ExecAction("C:\\Windows\\regedit.exe"));

                newTask.Principal.RunLevel = TaskRunLevel.Highest;
                newTask.Principal.LogonType = TaskLogonType.InteractiveToken;

                newTask.Settings.Compatibility = TaskCompatibility.V2_1;
                newTask.Settings.AllowDemandStart = true;
                newTask.Settings.DisallowStartIfOnBatteries = false;
                newTask.Settings.RunOnlyIfIdle = false;
                newTask.Settings.StopIfGoingOnBatteries = false;
                newTask.Settings.AllowHardTerminate = false;
                newTask.Settings.UseUnifiedSchedulingEngine = true;
                newTask.Settings.Priority = System.Diagnostics.ProcessPriorityClass.Normal;

                // Register the task in the root folder
                ts.RootFolder.RegisterTaskDefinition(@"Test", newTask);

                newTask.Dispose();
                ts.Dispose();
            }
        }

        static void deleteTask()
        {
            using (TaskService ts = new TaskService())
            {

                var tasks = ts.FindAllTasks(new System.Text.RegularExpressions.Regex(@"Test"));

                foreach(var task in tasks){
                    ts.RootFolder.DeleteTask(task.Name);
                }
            }
        }
    }
}

I'm using regedit.exe on exemple because this program required admin permission for run.

Create the task, make logoff and login again and you will see the regedit open after logon.

OBS: To create or delete task you have run visual studio as administrator, or put this code in the install process of your program

Let me know if this worked for someone