C#

string serviceCaption="My Service Caption";
ManagementObjectSearcher searcher = new ManagementObjectSearcher
    ("SELECT * FROM Win32_Service WHERE Caption = "+"serviceCaption);
            foreach (ManagementObject service in searcher.Get())
            {
               //Service Exist               
            }

string serviceName="MyServiceName";
ManagementObjectSearcher searcher = new ManagementObjectSearcher
    ("SELECT * FROM Win32_Service WHERE Name = "+"serviceName);
            foreach (ManagementObject service in searcher.Get())
            {
               //Service Exist               
            }

//Form main
public void createForm(){
   Child child = new Child();
   child.Disposed += this.child_Disposed;
   child.show();
   this.Enabled = true;
}

private void child_Disposed(object sender, EventArgs e){
   this.Enabled = false;
}

string ss = "55,5493";
string lat = ss.ToString().Replace(',', '.');
double d = Convert.ToDouble(ss);
double dd = Convert.ToDouble(lat);
MessageBox.Show("" + d); //output: 55,5493
MessageBox.Show("" + dd); //oubput: 555493

string lat = ss.ToString().Replace(',', '.');

string lat = ss.ToString().Replace('.', ',');