asp+ 制作图形

March 25,2004

/*
豆腐制作都是精品
http://www.asp888.net 豆腐技术站
如转载请保留版权信息
*/
这个程序经过修改现在作计数器的话只能做黑白的计数器，谁有办法能够做出复杂的图形计数器？
<% @Page Language="C#" %>
<% @Import Namespace="System.Drawing" %>
<% @Import Namespace="System.IO" %>
<% @Import Namespace="System.Drawing.Imaging" %>
<%
Response.Expires = 0;
Bitmap newBitmap = null;
Graphics g = null ;
string str2Render = Request.QueryString.Get("HitCount");
if (null == str2Render) str2Render = "12345";
string strFont = Request.QueryString.Get("HitFontName");
if (null == strFont) strFont = "楷体_GB2312";
int nFontSize = 12;
try
{
nFontSize = Request.QueryString.Get("HitFontSize").ToInt32();
}
catch
{
// do nothing, just ignore
}

string strBackgroundColorname = Request.QueryString.Get("HitBackgroundColor");
Color clrBackground = Color.White;
try
{
if (null != strBackgroundColorname)
clrBackground = ColorTranslator.FromHTML(strBackgroundColorname);
}
catch
{
}

string strFontColorName = Request.QueryString.Get("HitFontColor");
Color clrFont = Color.Black;
try
{
// Format in the URL: %23xxXXxx
if (null != strFontColorName)
clrFont = ColorTranslator.FromHTML(strFontColorName);
}
catch
{
}

try
{
Font fontCounter = new Font(strFont, nFontSize);
newBitmap = new Bitmap(1,1,PixelFormat.Format32bppARGB);
g = Graphics.FromImage(newBitmap);
SizeF stringSize = g.MeasureString(str2Render, fontCounter);
int nWidth = (int)stringSize.Width;
int nHeight = (int)stringSize.Height;
g.Dispose();
newBitmap.Dispose();
newBitmap = new Bitmap(nWidth,nHeight,PixelFormat.Format32bppARGB);
g = Graphics.FromImage(newBitmap);
g.FillRectangle(new SolidBrush(clrBackground), new Rectangle(0,0,nWidth,nHeight));
g.DrawString(str2Render, fontCounter, new SolidBrush(clrFont), 0, 0);
MemoryStream tempStream = new MemoryStream();
newBitmap.Save(tempStream,ImageFormat.GIF);
Response.ClearContent();
Response.ContentType = "image/GIF";
Response.BinaryWrite(tempStream.ToArray());
Response.End();
}
catch (Exception e)
{
Response.Write(e.ToString());
}
finally
{
if (null != g) g.Dispose();
if (null != newBitmap) newBitmap.Dispose();
}
%>

作者:豆腐()