Monorail的一些常用的东西(验证码,分页。。。持续更新)
1.验证码的使用,我们知道,基于Castle的mvc框架开发,原来基于asp.net WebForm 模型的一些对象就不能正常使用了,不过好在框架本身也提供了天然的对应的解决方案。例如Response对象等。以往我们在asp.net WebForm模型下基于流的输出,这个对象几乎是不可或缺的,现在转到Castle MVC框架下,也有相对应的Response对象,使用上几乎和WebForm一样,所以十分方便!下面是代码!
using System;
using System.Collections.Generic;
using System.Text;
using Castle.MonoRail.Framework;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Drawing;
namespace AtomPortal.Controllers
{
public class ValidateController:Controller
{
public void index()
{
CancelLayout();
CancelView();
string VNum = MakeValidateCode(4);
Session["code"] = VNum;
CreateImage(VNum);
}
private string MakeValidateCode(int count)
{
//此方法用于生成随机码
char[] s = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'h', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' };//定义一个组成含有验证码元素的数组
string num = "";
Random r = new Random();
for (int i = 0; i < count; i++)//控制生成随机码的个数
{
num += s[r.Next(0, s.Length)].ToString();//在s中随机 抽取一个数添加到num里
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}
return num;
}
private void CreateImage(string checkCode)
{
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int iwidth = (int)(checkCode.Length * 15);
System.Drawing.Bitmap image = new System.Drawing.Bitmap(iwidth, 25);
Graphics g = Graphics.FromImage(image);
g.Clear(Color.White);
//定义颜色
Color[] c = { Color.Black, Color.Red, Color.DarkBlue, Color.Green, Color.Orange, Color.Brown, Color.DarkCyan, Color.Purple };
//定义字体
string[] font = { "Verdana", "Microsoft Sans Serif", "Comic Sans MS", "Arial", "宋体" };
Random rand = new Random();
//随机输出噪点
for (int i = 0; i < 50; i++)
{
int x = rand.Next(image.Width);
int y = rand.Next(image.Height);
g.DrawRectangle(new Pen(Color.LightGray, 0), x, y, 1, 1);
}
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//输出不同字体和颜色的验证码字符
for (int i = 0; i < checkCode.Length; i++)
{
int cindex = rand.Next(7);
int findex = rand.Next(5);
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Font f = new System.Drawing.Font(font[findex], 10, System.Drawing.FontStyle.Bold);
Brush b = new System.Drawing.SolidBrush(c[cindex]);
int ii = 4;
if ((i + 1) % 2 == 0)
{
ii = 2;
}
g.DrawString(checkCode.Substring(i, 1), f, b, 3 + (i * 12), ii);
}
//画一个边框
g.DrawRectangle(new Pen(Color.Black, 0), 0, 0, image.Width - 1, image.Height - 1);
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//输出到浏览器
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
Response.ClearContent();
Response.ContentType = "image/Jpeg";
Response.BinaryWrite(ms.ToArray());
g.Dispose();
image.Dispose();
}
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}
}
}
接下来使用就和原来的一样,用img标签,地址指向这个Action,另外文件的下载等也可以用相同的方式。
2.分页是一个应用程序必不可少的部分,而且重复度很高,最好是有基于组件的方案,可以大大的提高开发的速度,webForm下我们有很多选择,AspNetPage等等,而在Castle MVC框架下,我们也有许多可用的方案,有以ViewComponents方式的,也有以Helper的方式的,PageHelper由于涉及数据,这里就不说了,而以ViewComponents方式的有Castle.MonoRail.Framework.ViewComponents.DiggStylePagination,可以产生像Digg那样的分页,这个只负责呈现分页导航,与具体的数据呈现无关,和AspNetPage有异曲同工之妙!
使用例子
public void page(int page)
{
Castle.MonoRail.Framework.Helpers.Page a = new Castle.MonoRail.Framework.Helpers.Page(null, page, 10, 1000);
PropertyBag["num"] = page;
PropertyBag["str"] = a;
}
view里面就#component(DiggStylePagination with "Page=$str"),具体可复制代码看测试效果!
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2.分页是一个应用程序必不可少的部分,而且重复度很高,最好是有基于组件的方案,可以大大的提高开发的速度,webForm下我们有很多选择,AspNetPage等等,而在Castle MVC框架下,我们也有许多可用的方案,有以ViewComponents方式的,也有以Helper的方式的,PageHelper由于涉及数据,这里就不说了,而以ViewComponents方式的有Castle.MonoRail.Framework.ViewComponents.DiggStylePagination,可以产生像Digg那样的分页,这个只负责呈现分页导航,与具体的数据呈现无关,和AspNetPage有异曲同工之妙!
使用例子
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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