C#

public partial class CustomPanel : Panel
{
    Color color;
    public CustomPanel()
    {
        InitializeComponent();
        color = Color.FromArgb(100, Color.Blue);
    }
    protected override CreateParams CreateParams
    {
        get
        {
            CreateParams cp = base.CreateParams;
            cp.ExStyle |=  0x00000020; //WS_EX_TRANSPARENT
            return cp;
        }
    }

    protected override void OnPaintBackground(PaintEventArgs e){}

    protected override void OnPaint(PaintEventArgs e)
    {

        using (Brush brush = new SolidBrush(color))
        {
            e.Graphics.Clear(Color.Transparent);
            e.Graphics.FillRectangle(brush, this.ClientRectangle);
        }
    }
}

<br />
string input = "ABC.ABC.ABC";<br />
Char c = '.';<br />
Regex regex = new Regex( c );<br />
int count = regex.Matches( input ).Count;<br />

<br />
string input = "ABC.ABC.ABC";<br />
int result = input.Split('.').Length - 1;<br />

char MyChar = '.';
int TheCount = MyString.Split(new Char[] {MyChar}).GetUpperBound();

Regards

Rohit Pandhi wrote:

you can use collections to reduce loops
like hashtable

Guffa wrote:

but they all use more resources as they create objects

Martin# wrote:

This means Memory, or not?

Martin# wrote:

Do you know if it's also faster? (performance profiling)