不加断点的话，输出的字体、字体大小、字体颜色、字体样式都是一样的
加断点就都不一样 我要的结果就是都不一样
怎么加断点会影响输出
- C# code
public partial class CheckImage : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { string randomStr = Session["randomStr"].ToString(); CreateImage(randomStr); } //随机颜色 private Color randomColor() { Random rd = new Random(); int red = rd.Next(0, 256); int green = rd.Next(0, 256); int blue = rd.Next(0, 256); return Color.FromArgb(red, green, blue); } //随机字体 private string randomFontType() { Random rd = new Random(); string[] fonts = new string[] { "Georgia", "Verdana", "Arial", "Tahoma", "Time News Roman", "Courier New", "Arial Black", "Quantzite" }; int length = fonts.Length; return fonts[rd.Next(0, length)]; } //随机字体大小 private int randomFontSize() { Random rd = new Random(); int i = rd.Next(15, 25); return i; } //随机字体样式 private FontStyle randomFontStyle() { Random rd = new Random(); FontStyle[] fontStyles = new FontStyle[] { FontStyle.Bold, FontStyle.Italic, FontStyle.Regular, FontStyle.Strikeout, FontStyle.Underline }; int length = fontStyles.Length; return fontStyles[rd.Next(0, length)]; } private void CreateImage(string randomString) { Bitmap image = new Bitmap(150, 50); Graphics g = Graphics.FromImage(image); g.Clear(Color.White); int i = 5; foreach (char c in randomString) { Font f = new Font(randomFontType(), randomFontSize(), randomFontStyle()); Brush b = new SolidBrush(randomColor()); g.DrawString(c.ToString(), f, b, i, 10); i += 25; } //g.DrawString(randomString[0].ToString(), f, brush, 5, 10); MemoryStream ms = new MemoryStream(); image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg); Response.ClearContent(); Response.ContentType = "image/jpeg"; Response.BinaryWrite(ms.ToArray()); g.Dispose(); image.Dispose(); }}------解决方案--------------------------------------------------------
Random rd = new Random();
=>
Random rd = new Random(Guid.NewId().ToString().GetHashCode());