Countdown to ASP.NET 2.0 Unleashed
I thought it would be cool to put together a countdown to the release of ASP.NET 2.0 Unleashed, by Stephen Walther, on June 9, 2006. So, I created the below dynamic image. Cool, huh?
Now here's the code to the above countdown image.
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="System.Drawing.Imaging" %>
<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="System.Text" %>
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
bool fontSizeParse;
int fontSize;
string fontSizeText = Request.QueryString["FontSize"];
fontSizeParse = int.TryParse(fontSizeText, out fontSize);
if (!fontSizeParse || fontSize <= 0)
{
fontSize = 14;
}
string countDownDate = Request.QueryString["Date"];
if (!String.IsNullOrEmpty(countDownDate))
{
string countdownText = GetCountdownText(countDownDate);
GenerateCountdownBitmap(fontSize, "Verdana", Color.Black, Color.White, countdownText);
}
}
private void GenerateCountdownBitmap(int fontSize, string fontName, Color fontColor, Color backgroundColor, string text)
{
Response.Expires = 0;
Bitmap bitmap = null;
Graphics graphic = null;
try
{
Font font = new Font(fontName, fontSize);
bitmap = new Bitmap(1, 1, PixelFormat.Format32bppArgb);
graphic = Graphics.FromImage(bitmap);
SizeF size = graphic.MeasureString(text, font);
int height = (int)size.Height;
int width = (int)size.Width;
graphic.Dispose();
bitmap.Dispose();
bitmap = new Bitmap(width, height, PixelFormat.Format32bppArgb);
graphic = Graphics.FromImage(bitmap);
graphic.FillRectangle(new SolidBrush(backgroundColor), new Rectangle(0, 0, width, height));
graphic.DrawString(text, font, new SolidBrush(fontColor), 0, 0);
MemoryStream memoryStream = new MemoryStream();
bitmap.Save(memoryStream, ImageFormat.Gif);
Response.ClearContent();
Response.ContentType = "image/gif";
Response.BinaryWrite(memoryStream.ToArray());
Response.End();
}
finally
{
if (graphic != null)
{
graphic.Dispose();
}
if (bitmap != null)
{
bitmap.Dispose();
}
}
}
private string GetCountdownText(string futureDate)
{
TimeSpan countdown = GetCountdownTicks(futureDate);
StringBuilder countdownText = new StringBuilder();
int countdownDays = countdown.Days;
if (countdownDays == 0 || countdownDays > 1)
{
countdownText.AppendFormat("{0} Days ", countdownDays);
}
else
{
countdownText.AppendFormat("{0} Day ", countdownDays);
}
int countdownHours = countdown.Hours;
if (countdownHours == 0 || countdownHours > 1)
{
countdownText.AppendFormat("{0} Hours ", countdownHours);
}
else
{
countdownText.AppendFormat("{0} Hour ", countdownHours);
}
int countdownMinutes = countdown.Minutes;
if (countdownMinutes == 0 || countdownMinutes > 1)
{
countdownText.AppendFormat("{0} Minutes ", countdownMinutes);
}
else
{
countdownText.AppendFormat("{0} Minute ", countdownMinutes);
}
int countdownSeconds = countdown.Seconds;
if (countdownSeconds == 0 || countdownSeconds > 1)
{
countdownText.AppendFormat("{0} Seconds ", countdownSeconds);
}
else
{
countdownText.AppendFormat("{0} Second ", countdownSeconds);
}
int countdownMilliseconds = countdown.Milliseconds;
if (countdownMilliseconds < 1 || countdownMilliseconds > 1)
{
countdownText.AppendFormat("{0} Milliseconds", countdownMilliseconds);
}
else
{
countdownText.AppendFormat("{0} Millisecond", countdownMilliseconds);
}
return countdownText.ToString();
}
private TimeSpan GetCountdownTicks(string futureDate)
{
bool futureDateParse;
DateTime futureDateParsed;
TimeSpan? ticksDifference = null;
futureDateParse = DateTime.TryParse(futureDate, out futureDateParsed);
if (futureDateParse)
{
DateTime currentDate = DateTime.Now;
if (currentDate < futureDateParsed)
{
long currentDateTicks = DateTime.Now.Ticks;
long futureDateTicks = DateTime.Parse(futureDate).Ticks;
long longDifference = futureDateTicks - currentDateTicks;
ticksDifference = TimeSpan.FromTicks(longDifference);
}
}
return ticksDifference ?? TimeSpan.Zero;
}
</script>
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