C#

SomeButton.Tag = stateValue;

int myState=(int)myControl.Tag;

using System;
using System.Drawing;
using System.Windows.Forms;

class CountClickButton : Button {
	
	int clickCount; // Number of clicks
	
	public CountClickButton() {
		clickCount = 0;
	}
	
	// OnClick is called when the button is clicked. It must increase clickCount by one
	// and then execute the event handlers (which is done when base.OnClick
	// is executed).
	protected override void OnClick(EventArgs e) {
		clickCount = clickCount + 1;
		base.OnClick(e);
	}
	
	// Only allow other classes to read number of clicks. Number of clicks cannot be
	// modified by other classes.
	public int ClickCount {
		get {
			return clickCount;
		}
	}
}

class CountClickForm : Form {
	
	CountClickButton b;
	
	public CountClickForm() {
		b = new CountClickButton();
		b.Text = "Click me!";
		b.Size = b.PreferredSize;
		ClientSize = new Size(700, 400); // Should be big enough. Fit to your own needs.
		b.Left = (ClientSize.Width - b.Width) / 2;
		b.Top = (ClientSize.Height - b.Height) / 2;
		b.Click += new EventHandler(b_clicked);
		Controls.Add(b);
		Text = "I count clicks!";
	}
	
	// b_clicked is registered as an event. It will be executed when button is clicked,
	// after number of clicks is increased by one.
	void b_clicked(object sender, EventArgs e) {
		string text = String.Format("Button has been clicked {0} times.", b.ClickCount);
		if (b.ClickCount < 1) { 
			// This should never happen.
			text = "Sorry, I was drunk when programming this. Cheers!!";
		}
		if (b.ClickCount == 1) {
			text = "Button has been clicked once.";
		}
		if (b.ClickCount == 2) {
			text = "Button has been clicked twice.";
		}
		Text = text;
	}
		
	[STAThreadAttribute]
	static void Main() {
		Application.Run(new CountClickForm());
	}
}

using System.Text;
// ...
string name = Encoding.ASCII.GetString(byteArray, 0, nameFieldLength)
string message = Encoding.ASCII.GetString(byteArray, nameFieldLength, messageFieldLength)

public class StringAndByteArray
{
    public string Name = string.Empty;
    public byte[] ByteArray = null;
}

sc steinhayse wrote:

linq is the preferred method over using sql.

sc steinhayse wrote:

tell me how to acdcomplish this goal

var myQuery = 
     from persons in myDataContext.LastPersons
     where persons.LastName.StartsWith("Co")
     select persons;

// seek the result and update the Field "LastUpdate"
foreach (clsPerson currentPerson in myQuery)
{
   currentPerson.LastUpdate = DateTime.Now;
}

try
{
   // save changes to DB
   myDataContext.SubmitChanges();
   MessageBox.Show("Operation successfully");
}
catch (Exeption ex)
{
   MessageBox.Show(ex.Message);
}