private void DataGridView1_RowPrePaint(object sender, DataGridViewRowPrePaintEventArgs e)
{
    DateTime tmpDateWv = Convert.ToDateTime(DataGridView1["DataGridViewTextBoxColumn", e.RowIndex].Value);
    DateTime tmpDateToday = DateTime.Today;
    if (tmpDateWv < tmpDateToday.AddDays(-5))
    {
        DataGridView1.Rows[e.RowIndex].DefaultCellStyle.BackColor = System.Drawing.ColorTranslator.FromHtml("#FFC7CE"); // rot
    }
    else
    {
        DataGridView1.Rows[e.RowIndex].DefaultCellStyle.BackColor = System.Drawing.ColorTranslator.FromHtml("#FFEB9C"); // gelb
    }
}

public Task FillAsync()
        {
            return Task.Factory.StartNew(() =>
            {
                ( this.TableAdapter.Fill(this.DataSet.Test);

                // etc
            });
        }
        public async Task RebindUI()
        {
            await FillAsync();

            this.chart1.DataSource = this.DataSet.Test;
            chart1.Series[1].YValueMembers = "id";
            chart1.Series[1].XValueMember = "anzahl";
            chart1.DataBind();
            chart1.Update();
        }

                
Thread threadDB = new Thread(delegate() { getDataBase(); });
threadDB.Start();

private void getDataBase()
{
this.TableAdapter.Fill(this.DataSet.Test);

comboBox1.Invoke((MethodInvoker)(() =>
                {
                    this.comboBox1.DataSource = this.DataSet.Test;
                    this.comboBox1.DisplayMember = "Name";
                    this.comboBox1.ValueMember = "ID";
                  
                }));
}

Thread threadDB = new Thread(delegate() { getDataBase(); });
threadDB.Start();

private void getDataBase()
{
comboBox1.Invoke((MethodInvoker)(() => {   this.TableAdapter.Fill(this.DataSet.Test);}));
}

PrincipalContext ctx = new PrincipalContext(ContextType.Machine, strHost);
            GroupPrincipal grp = GroupPrincipal.FindByIdentity(ctx, IdentityType.Sid, "S-1-5-32-544");

private void GetUsers(String strHost, int Line)
        {
            using (DirectoryEntry groupEntry = new DirectoryEntry("WinNT://" + strHost + "/Administratoren,group"))
            {
                int i = 0;
                foreach (object member in (IEnumerable)groupEntry.Invoke("Members"))
                {
                    using (DirectoryEntry memberEntry = new DirectoryEntry(member))
                    {
                        string fullUser = memberEntry.Path;
                        char[] strTrim = { 'W', 'i', 'n', 'N', 'T', ':', '/', '/'};
                        string shortUser = fullUser.TrimStart(strTrim);
                        user[i] = shortUser;
                        dgvItems.Rows[Line].Cells[i+2].Value = user[i];
                        i += 1;
                    }
                }
            }
        }

Process.Start("cmd.exe", @"/C runas.exe /savecred /user:" + struser + " " + "\"C:\\Program Files\\SolarWinds\\DameWare\\DWRCC.exe -c -h -m:" + strhost + "\"");

            
            ProcessStartInfo startInfo = new ProcessStartInfo();
            startInfo.Verb = @"cmd.exe";
            startInfo.Arguments = @"runas.exe /savecred /user:domain\user C:\\Program Files\\SolarWinds\\DameWare\\DWRCC.exe";
            Process process = new Process();
            process.StartInfo = startInfo;
            startInfo.ErrorDialog = true;
            process.Start();

Process.Start(@"C:\Windows\System32\runas.exe C:\Program Files\Programm.exe /arg" , @"/savecred /user:domain\user");