Noob spørgsmål...

Hej folkens,

Jeg sidder her og leger med lidt programmering og får i følgende kode, en fejl jeg ikke forstår.

private void button1_Click(object sender, EventArgs e)
        {
            ServiceController controller = GetService();
            ServiceControllerStatus MyStatus; //Enum

            if (cbServices.Text != "<Select a service>" & cbServices.Text != string.Empty && controller.DisplayName == cbServices.Text)
            {
                serviceController1.DisplayName = cbServices.Text;
                MyStatus = serviceController1.Status;

                switch (MyStatus)
                {
                    case ServiceControllerStatus.Running: StatusBar.Text = ("Service is running.");
                        break;
                    case ServiceControllerStatus.Stopped: StatusBar.Text = ("Service is stopped.");
                        break;
                    case ServiceControllerStatus.Paused: StatusBar.Text = ("Service is paused.");
                        break;
                }
            }
            else
                StatusBar.Text = ("There is no service by that name.");
        }

Altså, der bliver tjekket for condition a og b, her efter (hvis de er opfyldt) for condition c.

Det fungere fint så længe "cbServices.Text" enten er "Empty", indeholder "<Select a service> eller et navn der eksisterer i "controller.DisplayName". Men skriver jeg f.eks. "test" går det i ged.

Nogle der gider kigge på det?

Her er koden i sin fulde længde hvis nogle skulle have lyst til at kompile skidtet.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.ServiceProcess;



namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        
        private DataTable _tblServices = new DataTable();

        private void button1_Click(object sender, EventArgs e)
        {
            ServiceController controller = GetService();
            ServiceControllerStatus MyStatus; //Enum

            if (cbServices.Text != "<Select a service>" & cbServices.Text != string.Empty && controller.DisplayName == cbServices.Text)
            {
                serviceController1.DisplayName = cbServices.Text;
                MyStatus = serviceController1.Status;

                switch (MyStatus)
                {
                    case ServiceControllerStatus.Running: StatusBar.Text = ("Service is running.");
                        break;
                    case ServiceControllerStatus.Stopped: StatusBar.Text = ("Service is stopped.");
                        break;
                    case ServiceControllerStatus.Paused: StatusBar.Text = ("Service is paused.");
                        break;
                }
            }
            else
                StatusBar.Text = ("There is no service by that name.");
        }
                
     
        private void Form1_Load(object sender, EventArgs e)
        {
            _tblServices.Columns.Add(new DataColumn("ServiceName", typeof(System.String)));
            _tblServices.Columns.Add(new DataColumn("DisplayName", typeof(System.String)));
            _tblServices.Columns.Add(new DataColumn("Index", typeof(System.Int32))); //used for sorting

            System.ServiceProcess.ServiceController[] services;
            //fill the array with the GetServices method
            services = System.ServiceProcess.ServiceController.GetServices();
            
            foreach (System.ServiceProcess.ServiceController controller in services)
            {
                DataRow row = _tblServices.NewRow();
                row["ServiceName"] = controller.ServiceName;
                row["DisplayName"] = controller.DisplayName;
                row["Index"] = 1;

                _tblServices.Rows.Add(row);
            }

            DataRow blankRow = _tblServices.NewRow();
            blankRow["ServiceName"] = string.Empty;
            blankRow["DisplayName"] = "<Select a service>";
            blankRow["Index"] = 0;
            _tblServices.Rows.Add(blankRow);

            DataView view = new DataView(_tblServices, string.Empty, "Index, DisplayName", DataViewRowState.CurrentRows);
            cbServices.DataSource = view;
            cbServices.ValueMember = "ServiceName";
            cbServices.DisplayMember = "DisplayName";
        }
        private ServiceController GetService()
        {
            if (cbServices.Text.ToString().Trim() != string.Empty)
                return new ServiceController((string)cbServices.Text);
            else
               return null;
        }
    }
}