C#

object jashimusValue = dataGridView[0 , 0].Value;

Bastard Programmer from Hell

void Button1Click(object sender, EventArgs e)
{
  // TODO: Implement Button1Click
  //
  // when you click on button OK, 
  // program shows MessageBox with value of
  // DataGridView1[0,0]
  // in this programming language column goes first then row!
  // DataGridView[column,row], so watch out for mistakes,
  // allso in some programming languages the first row and column
  // does not have indexes [0,0] but [1,1]
			
	int row = 0;
	int column = 0;
	string message;
	//
	// first and allways
        // check is there any value in dataGridView1
	// beacouse null value can sometimes make problem
        // 
	if (dataGridView1[column,row].Value == null)
	{ 
	  dataGridView1[column,row].Value = "Empty";
	}
			
	message = dataGridView1[column,row].Value.ToString();
	MessageBox.Show(message);
							
	}

public class MyBaseClass
{
    public int x;
    public string y;
    public IEnumerable Details;
}

public class MyClass<T> : MyBaseClass
{
    public MyClass<T>()
    {
        Details = new List<T>();
    }
}

public abstract class BaseClass {
 public int x;
 public string y;
 public virtual IEnumerable BaseDetails { get; set; }
}

public class MyClass<T> : BaseClass {
 public IList<T> Details { get; set; }
 public override IEnumerable BaseDetails {
  get { return Details; }
  // The setter will fail if it's the wrong type, probably
  // what you want
  set { Details = (IList<T>)value; }
 }
}

public class Test {
    public void Run() {
        List<MyBase> all=new List<MyBase>();
        all.Add(new MyGeneric<int>());
        all.Add(new MyGeneric<string>());
        foreach(MyBase b in all) {
            log("Holding a list of "+b.MyType);
        }
    }

    public class MyBase {
        public Type MyType;
        public MyBase(Type type) {
            MyType=type;
        }
    }
    public class MyGeneric<T> : MyBase {
        public int x;
        public string y;
        public List<T> Details;

        public MyGeneric() : base(typeof(T)) {}
    }
}

if (TextBoxRenderer.IsSupported)
{
  TextBoxRenderer.DrawTextBox(e.Graphics, new Rectangle(10, 10, 50, 50), TextBoxState.Normal);
  TextBoxRenderer.DrawTextBox(e.Graphics, new Rectangle(70, 10, 50, 50), TextBoxState.Hot);
}
if (ComboBoxRenderer.IsSupported)
{
  ComboBoxRenderer.DrawDropDownButton(e.Graphics, new Rectangle(10, 70, 20, 20), ComboBoxState.Normal);
  ComboBoxRenderer.DrawDropDownButton(e.Graphics, new Rectangle(70, 70, 20, 20), ComboBoxState.Hot);
}