1.用visual studio创建的工程,都是codebine方式,我想将服务器端代码写在aspx里面,只能手工改吗?如果添加一个事件处理代码(比如button的click),也只能手工加入吗?2.我在本机开发,想部署(copy)到另外一台服务器上,是不是要手工copy?3.asp.net 2.0,是不是只有安装了.net framework 2.0和visual studio 2005后才能使用?4.最后,再请推荐一个生成登陆验证图片的程序(dll?),要求生成的图片中,不要太简单,比如有干扰的杂点,或字符不规则排列.
2、是的
3、.net framework 2.0即可,如果你想手工编译的话
4、自己生成dll去吧
private void Page_Load(object sender, EventArgs e){
CreateCheckCodeImage(GenerateCheckCode());
}
private void CreateCheckCodeImage(string checkCode){ if(checkCode == null || checkCode.Trim() == String.Empty)
return; System.Drawing.Bitmap image = new System.Drawing.Bitmap((int)Math.Ceiling((checkCode.Length * 11.5)), 22);
Graphics g = Graphics.FromImage(image); try{
//生成随机生成器
Random random = new Random(); //清空图片背景色
g.Clear(Color.White); //画图片的背景噪音线
for(int i=0; i<5; i++){
int x1 = random.Next(image.Width);
int x2 = random.Next(image.Width);
int y1 = random.Next(image.Height);
int y2 = random.Next(image.Height); g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2);
} Font font = new System.Drawing.Font("Arial", 12, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic));
System.Drawing.Drawing2D.LinearGradientBrush brush = new System.Drawing.Drawing2D.LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.0f, true);
g.DrawString(checkCode, font, brush, 2, 2); //画图片的前景噪音点
for(int i=0; i<50; i++){
int x = random.Next(image.Width);
int y = random.Next(image.Height); image.SetPixel(x, y, Color.FromArgb(random.Next()));
} //画图片的边框线
g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1); System.IO.MemoryStream ms = new System.IO.MemoryStream();
image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
Response.ClearContent();
Response.ContentType = "image/gif";
Response.BinaryWrite(ms.ToArray());
}
finally{
g.Dispose();
image.Dispose();
}
}
private string GenerateCheckCode(){
int number;
char code;
string checkCode = String.Empty; System.Random random = new Random(); for(int i=0; i<5; i++){
number = random.Next();
if(number % 2 == 0)
code = (char)('0' + (char)(number % 10));
else
code = (char)('0' + (char)(number % 10));
//字母
//code = (char)('A' + (char)(number % 26));
checkCode += code.ToString();
} Response.Cookies.Add(new HttpCookie("CheckCode", checkCode)); Session["verifycode"] = checkCode;
return checkCode;
}