C#

// the result of the operation on the right will give you the Name as is or truncated
// if it exceeds the 20 character limit
string forAutoCompleteBox = Name.Substring(0, System.Math.Min(20, Name.Length));

string paddedToTwentyChars = String.Format("{0,-20}", myTextBox.Text);

string TwentyChar(string orig)
{
    int len = orig.Length;
    if (len < 20)
        return orig.PadRight(20);
    else if (len > 20)
        return orig.Substring(0, 20);
    else
        return orig;
}

orig.PadRight(20).Substring(0, 20)

if (condition)
   {
   statement;
   if (condition)
      statement;
   statement;
   }

In Case of Rectangle We Can Use the Rectangle.X = 0

 Point point1 = new Point(50,  50);
 Point point2 = new Point(100,  25);
 Point point3 = new Point(200,   5);
 Point point4 = new Point(250,  50);
 Point point5 = new Point(300, 100);
 Point point6 = new Point(350, 200);
 Point point7 = new Point(250, 250);

public void DrawPolygonPoint(PaintEventArgs e)
{
    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);

    // Create points that define polygon.
    Point[] curvePoints =
             {
                 point1,
                 point2,
                 point3,
                 point4,
                 point5,
                 point6,
                 point7
             };

    // Draw polygon to screen.
    e.Graphics.DrawPolygon(blackPen, curvePoints);
}

private void panel1_Paint(object sender, PaintEventArgs e)
    {
    DrawPolygonPoint(e);
    DrawPolygonPoint(e, -10, -20);
    DrawPolygonPoint(e, -20, 10);
    }

Point point1 = new Point(50, 50);
Point point2 = new Point(100, 25);
Point point3 = new Point(200, 5);
Point point4 = new Point(250, 50);
Point point5 = new Point(300, 100);
Point point6 = new Point(350, 200);
Point point7 = new Point(250, 250);

public void DrawPolygonPoint(PaintEventArgs e)
    {
    DrawPolygonPoint(e, 0, 0);
    }
public void DrawPolygonPoint(PaintEventArgs e, int xOffset, int yOffset)
    {
    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);
    // Create points that define polygon.
    Point[] curvePoints =
     {
         AddOffset(point1, xOffset, yOffset),
         AddOffset(point2, xOffset, yOffset),
         AddOffset(point3, xOffset, yOffset),
         AddOffset(point4, xOffset, yOffset),
         AddOffset(point5, xOffset, yOffset),
         AddOffset(point6, xOffset, yOffset),
         AddOffset(point7, xOffset, yOffset)
     };

    // Draw polygon to screen.
    e.Graphics.DrawPolygon(blackPen, curvePoints);
    blackPen.Dispose();
    }
private Point AddOffset(Point p, int xOffset, int yOffset)
    {
    return new Point(p.X + xOffset, p.Y + yOffset);
    }

Point[] shape = new Point[] { new Point(50, 50),
                              new Point(100, 250),
                              new Point(200, 5),
                              new Point(250, 50),
                              new Point(300, 100),
                              new Point(350, 200),
                              new Point(250, 250)};

public void DrawPolygonPoint(PaintEventArgs e)
    {
    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);
    Pen redPen = new Pen(Color.Red, 1);
    e.Graphics.DrawPolygon(redPen, shape);
    int minX = int.MaxValue;
    foreach (Point p in shape)
        {
        if (p.X < minX)
            {
            minX = p.X;
            }
        }
    // Create points that define polygon.
    Point[] curvePoints = new Point[shape.Length];
    int i = 0;
    foreach (Point p in shape)
        {
        curvePoints[i++] = AddOffset(p, - minX, 0);
        }

    // Draw polygon to screen.
    e.Graphics.DrawPolygon(blackPen, curvePoints);
    redPen.Dispose();
    blackPen.Dispose();
    }