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标题: 用WPF做的一个可以点击刷新的验证码 [打印本页]

作者: ♠Akechi♠ 时间: 2014-3-23 11:19
标题: 用WPF做的一个可以点击刷新的验证码
本帖最后由 ♠Akechi♠ 于 2014-3-23 14:47 编辑

WPF的图形接口是API的，学了相关一些知识，自己画了个验证码，不知道有没有更简洁的方法:string code;
      protected void intCode()
      {
         Random random = new Random();
         code = Convert.ToString(random.Next(1000, 9999));
         for (int i = 0; i < code.Length; i++)
         {
            //设置下StackPanel的背景
            spHouse.Background = new SolidColorBrush(Color.FromArgb(150, 230, 230, 230));
            DrawingVisual drawingVisual = new DrawingVisual();
            DrawingContext drawingContext = drawingVisual.RenderOpen();

            drawingContext.DrawText(
            new FormattedText(Convert.ToString(code[0]), CultureInfo.GetCultureInfo("en-us"),
                  FlowDirection.LeftToRight, new Typeface("Verdana"), 14, Brushes.Green),
            new Point(15, 8));

            drawingContext.DrawText(
            new FormattedText(Convert.ToString(code[1]), CultureInfo.GetCultureInfo("en-us"),
                     FlowDirection.LeftToRight, new Typeface("Verdana"), 14, Brushes.Blue),
            new Point(30, 8));

            drawingContext.DrawText(
            new FormattedText(Convert.ToString(code[2]), CultureInfo.GetCultureInfo("en-us"),
                     FlowDirection.LeftToRight, new Typeface("Verdana"), 14, Brushes.Red),
            new Point(45, 8));

            drawingContext.DrawText(
            new FormattedText(Convert.ToString(code[3]), CultureInfo.GetCultureInfo("en-us"),
                     FlowDirection.LeftToRight, new Typeface("Verdana"), 14, Brushes.DeepSkyBlue),
            new Point(60, 8));
            drawingContext.Close();

            // 利用RenderTargetBitmap对象，以保存图片
            RenderTargetBitmap renderBitmap = new RenderTargetBitmap((int)this.imgAuthCode.Width, (int)this.imgAuthCode.Height, 96, 96, PixelFormats.Pbgra32);
            renderBitmap.Render(drawingVisual);
            ImageSource source = BitmapFrame.Create(renderBitmap);
            imgAuthCode.Source = source;
         }
      }

      private void Window_Loaded(object sender, RoutedEventArgs e)
      {
         intCode();
      }

      private void imgAuthCode_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
      {
         intCode();
      }

作者: 许庭洲 时间: 2014-3-23 14:02
值得学习ing!

作者: cancle 时间: 2014-3-23 21:15
额，我用Winform做的，分享下

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace 验证码2
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void pictureBox1_Click(object sender, EventArgs e)
{
Bitmap yanzheng=new Bitmap(200,70);//声明一个宽200，高70的位图
Graphics g = Graphics.FromImage(yanzheng);//新建个绘图的对象
Random n=new Random();//随机5个数
string str = null;
string[] font = { "黑体", "华文行楷", "微软雅黑", "隶书", "幼圆", "宋体", "华文彩文" };
Color[] col = { Color.Green, Color.Blue, Color.Red, Color.Black, Color.BlueViolet, Color.GreenYellow, Color.Orange };
for (int i = 0; i < 5; i++)//5个随机的数字
{
str+=n.Next(0,10).ToString();
}
//位图，画线，画点，随机字体，随机颜色
for (int i = 0; i < 100; i++)//噪线
{
Point p1=new Point(n.Next(0,yanzheng.Width),n.Next(0,yanzheng.Height));//两点一线，这是第一个点的随机坐标
Point p2=new Point(n.Next(0,yanzheng.Width),n.Next(0,yanzheng.Height));//这是第二个点的随机坐标，都控制在位图的宽和高之内
Pen pen=new Pen(col[n.Next(0,7)],5);
g.DrawLine(pen,p1,p2);
}
for (int i = 0; i < 200; i++)//噪点
{
Point p=new Point(n.Next(0,yanzheng.Width),n.Next(0,yanzheng.Height));
yanzheng.SetPixel(p.X, p.Y, col[n.Next(0, 7)]);
}
for (int i = 0; i < 5; i++)
{
Point p=new Point(i*30,n.Next(0,6)*5);//遍历的坐标，每一个坐标的宽度会加30，高度随机
g.DrawString(str[i].ToString(),new Font(font[n.Next(0,7)],40),new SolidBrush(col[n.Next(0,7)]),p);//把文本写进位图内，随机颜色，随机字体
}
pictureBox1.Image = yanzheng;//最后把这个位图赋值给图片
}
}
}

复制代码

附上图，点击图片更换验证码

11.png (32.38 KB, 下载次数: 32)

作者: ♠Akechi♠ 时间: 2014-3-23 22:58

cancle 发表于 2014-3-23 21:15
额，我用Winform做的，分享下
附上图，点击图片更换验证码

你这个太炫了0.0，绝对是艺术家···我那个很朴实···因为我不会API，刚学

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