C#

public class test : System.Windows.Forms.Form
{
	Button b;
	Label l;
	Client myClient = new Client();

	public test()
	{
		l = new Label();
		this.Controls.Add(l);
		b = new Button();
		b.Location = new Point(20, 20);
		b.Click += new EventHandler(bClick);
	
		this.Controls.Add(b);
	}
	public static void Main()
	{
		Application.Run(new test());
	}
	private void bLoadClientClick(object sender, EventArgs e)
	{
        	myClient.LoadClient();
		myClient.DisplayClient();
         }
}

public class Client
{
	string strName = "";
	string strAddress = "";
	string strTelephone = "";

	public void DisplayClient()
	{
		txtName.Text = strName;
		txtAddress.Text = strAddress;
		txtTelephone.Text = strTelephone;
	}

	public bool LoadClient()
	{
		...
		...
	}
}

fc file1.txt file2.txt > diff.txt

// unmanaged
__declspec(dllexport) HRESULT GetHostInfoFromDB(int iHostID, P_HostInfo hostInfo);
 
// managed
[DllImport(...)]
extern static int GetHostInfoFromDB(int iHostID, out HostInfo hostInfo);

<br />
double MyFloat = 123.456;<br />
string MyString;<br />
MyString = String.Format("{0:00.00}", MyFloat);<br />
Console.WriteLine(MyString);<br />

<br />
double MyFloat = 123.456;<br />
Console.WriteLine(String.Format("{0:00.00}", MyFloat));<br />