C#

[DefaultProperty("Text")]
[ParseChildren(true), PersistChildren(false)]
        
public class MyGrid : GridView
{        
    //... Some variable declarations

    protected SizeItemCollection _PageSizeItems;
    [Category("Paging")]        
    [Editor(typeof(CollectionEditor), typeof(System.Drawing.Design.UITypeEditor))]
    [PersistenceMode(PersistenceMode.InnerDefaultProperty), MergableProperty(false)]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
    [Description("Items list for the PageSize selector DropDownList")]
    public SizeItemCollection PageSizeItems
    {
        get
        {
            return (_PageSizeItems != null ? _PageSizeItems : new SizeItemCollection());
        }
    }
    protected override void InitializePager(GridViewRow row, int columnSpan, PagedDataSource pagedDataSource)
    {
        //Here I create the pager row and added the DropDownList with the values in PageSiZeItems
    }
	
    //... some more code ...
        
}

public class SizeItem : Component
{
    private int _size;
    public SizeItem() { }
    public SizeItem(int size)
    {
        _size = size;
    }
    public int Size
    {
        get { return _size; }
        set { _size = value; }
    }             
}

public class SizeItemCollection : CollectionBase
{
    //Here I implemented Add(), Insert(), Remove(), Contains(), IndexOf() and CopyTo()
    //for my SizeItem class
}

float x = 0.5f;<br />
float y = 1.0f;<br />
<br />
private void ProcessInput(float amountOfMovement)<br />
        {<br />
            Vector3 moveVector = new Vector3();<br />
<br />
            KeyboardState keys = Keyboard.GetState();<br />
            if (keys.IsKeyDown(Keys.Right))<br />
                moveVector.X += amountOfMovement;<br />
            if (keys.IsKeyDown(Keys.Left))<br />
                moveVector.X -= amountOfMovement;<br />
            if (keys.IsKeyDown(Keys.Down))<br />
                moveVector.Y -= amountOfMovement;<br />
            if (keys.IsKeyDown(Keys.Up))<br />
                moveVector.Y += amountOfMovement;<br />
<br />
            if (keys.IsKeyDown(Keys.Add))<br />
                x += 0.1f;<br />
                y += 0.1f;<br />
            if (keys.IsKeyDown(Keys.Subtract))<br />
                x -= 0.1f;<br />
                y -= 0.1f;<br />
<br />
            Matrix cameraRotation = Matrix.CreateRotationX(cameraAngles.X) * Matrix.CreateRotationZ(cameraAngles.Z);<br />
            cameraPosition += Vector3.Transform(moveVector, cameraRotation);<br />
<br />
            MouseState currentMouseState = Mouse.GetState();<br />
            if (currentMouseState.X != p_mouseState.X)<br />
                cameraAngles.Z -= amountOfMovement / 80.0f * (currentMouseState.X - p_mouseState.X);<br />
            if (currentMouseState.Y != p_mouseState.Y)<br />
                cameraAngles.X -= amountOfMovement / 80.0f * (currentMouseState.Y - p_mouseState.Y);<br />
            Mouse.SetPosition(Window.ClientBounds.Width / 2, Window.ClientBounds.Height / 2);<br />
        }<br />