作者：陈太汉
C# 验证码
多功能注册码，注册码可以完全自定义，全部都是动态的，包括字体的颜色，大小，样式，还有内容
using System;using System.Drawing;
namespace SecurityCode{ public class DrawMethod { /// <summary> /// 画图 /// </summary> /// <param name="content"></param> /// <param name="size"></param> /// <param name="fileName"></param> public void Draw(string content,Size size,string fileName) { Image image = new Bitmap(size.Width,size.Height); Graphics g = Graphics.FromImage(image); DrawBorder(g,image.Size); DrawContent(g,content,image.Size,(int)FontSet.Font.Size); DrawRandom(g, image.Size); image.Save(@"D://" + fileName); }
/// <summary> /// 画边框 /// </summary> /// <param name="g"></param> /// <param name="size"></param> private void DrawBorder(Graphics g, Size size) { Pen pen = new Pen(SolidBrushSet.SolidBrush); Rectangle rect=new Rectangle(1,1,size.Width-4,size.Height-4); g.DrawRectangle(pen,rect); }
//画字符串 private void DrawContent(Graphics g, string content,Size size,int fontHeight) { Point point = new Point(); int i = 0; point.Y = (size.Height - fontHeight) / 2; int distance = size.Width / (content.Length+1); foreach (char c in content) { point.X = i * distance + distance/2; g.DrawString(c.ToString(), FontSet.Font, SolidBrushSet.SolidBrush, point); i++; } }
/// <summary> /// 画干扰 /// </summary> /// <param name="g"></param> /// <param name="size"></param> private void DrawRandom(Graphics g, Size size) { Pen pen = new Pen(SolidBrushSet.SolidBrush); Random rand = new Random(); for (int i = 0; i < 3; i++) { g.DrawLine(pen, rand.Next(size.Width), rand.Next(size.Width), rand.Next(size.Height), rand.Next(size.Height)); }
for (int i = 0; i < 10; i++) { Rectangle rect = new Rectangle(rand.Next(2, size.Width - 2), rand.Next(2, size.Height - 2), 1, 1); g.DrawRectangle(pen, rect); } } }}
using System;
namespace SecurityCode{ /// <summary> /// 自动生成字符串 /// </summary> public class CreateContent { private string so = "1234567890abcdefghijklmnopqrstuvwxyzQWERTYUIOPASDFGHJKLZXCVBNM";
/// <summary> /// 生成内容 /// </summary> /// <returns></returns> public string GetContent() { Random rand = new Random(); string str = null; for (int i = 0; i < 6; i++) { str += so.Substring(rand.Next(62), 1); } return str; } }}
using System;using System.Drawing;
namespace SecurityCode{ /// <summary> /// 字体设置 /// </summary> public class FontSet { public static Font Font { get { FontFamily fFamily = GetFontFamily(); FontStyle fStyle = GetFontStyle(); int emSize = GetFontSize(); return new Font(fFamily, emSize, fStyle); } }
private FontSet() { }
/// <summary> /// 设置字体 /// </summary> private static FontFamily GetFontFamily() { Random rand = new Random(); return FontFamily.Families[rand.Next(FontFamily.Families.Length)]; }
/// <summary> /// 设置字体样式 /// </summary> private static FontStyle GetFontStyle() { Random rand = new Random(); int index = rand.Next(1, 4); index = 1 << index; return (FontStyle)index; }
/// <summary> /// 设置字体大小 /// </summary> public static int GetFontSize() { Random rand = new Random(); return rand.Next(12, 14); } }}
using System;using System.Drawing;
namespace SecurityCode{ /// <summary> /// 画笔设置 /// </summary> public class SolidBrushSet { /// <summary> /// 画笔 /// </summary> public static SolidBrush SolidBrush { get { Color color= GetColor(); return new SolidBrush(color); } }
private SolidBrushSet(){}
/// <summary> /// 随机生成画笔颜色 /// </summary> /// <returns></returns> public static Color GetColor() { Random rand = new Random(); int r = rand.Next(0,255); int g = rand.Next(0, 255); int b = rand.Next(0, 255); return Color.FromArgb(r,g,b); } }}
private void Test() { DrawMethod drawMethod = new DrawMethod(); CreateContent createCont = new CreateContent(); for (int i = 0; i < 10; i++) { string content = createCont.GetContent(); Size size = new Size(100, 40); drawMethod.Draw(content, size, i.ToString() + ".jpg"); } }
