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ThreeLayerMusic/Music.Common/ATools.cs[13K，2009-6-12 11:57:32]，
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1
using System;
2using System.Web;
3using System.Collections.Generic;
4using System.Linq;
5using System.Text;
6using System.Drawing;
7using System.Drawing.Imaging;
8using System.IO;
9
10namespace Music.Common
11
...{
12
/**//// <summary>
13
/// ATools工具操作类..如Session,Cookie...
14
/// </summary>
15 public class ATools
16 ...{
17
18 /**//// <summary>
19 /// 返回Session信息
20 /// </summary>
21 /// <param name="strName">Session名称</param>
22 /// <returns></returns>
23 public static string GetSession(string strName)
24 ...{
25 if (HttpContext.Current.Session[strName] == null)
26 ...{
27 return "";
28 }
29 return HttpContext.Current.Session[strName].ToString();
30 }
31
32 /**//// <summary>
33 /// 写Session信息
34 /// </summary>
35 /// <param name="strName">Session名称</param>
36 /// <param name="strValue">值</param>
37 public static void WriteSession(string strName,string strValue)
38 ...{
39 if (strName != "" && strValue!="")
40 ...{
41 HttpContext.Current.Session[strName] = strValue;
42 }
43 }
44
45 /**//// <summary>
46 /// 写cookie值
47 /// </summary>
48 /// <param name="strName">名称</param>
49 /// <param name="strValue">值</param>
50 public static void WriteCookie(string strName, string strValue)
51 ...{
52 HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];
53 if (cookie == null)
54 ...{
55 cookie = new HttpCookie(strName);
56 }
57 cookie.Value = strValue;
58 HttpContext.Current.Response.AppendCookie(cookie);
59
60 }
61 /**//// <summary>
62 /// 写cookie值
63 /// </summary>
64 /// <param name="strName">名称</param>
65 /// <param name="strValue">值</param>
66 /// <param name="expires">过期时间(分钟)</param>
67 public static void WriteCookie(string strName, string strValue, int expires)
68 ...{
69 HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];
70 if (cookie == null)
71 ...{
72 cookie = new HttpCookie(strName);
73 }
74 cookie.Value = strValue;
75 cookie.Expires = DateTime.Now.AddMinutes(expires);
76 HttpContext.Current.Response.AppendCookie(cookie);
77
78 }
79
80 /**//// <summary>
81 /// 读cookie值
82 /// </summary>
83 /// <param name="strName">名称</param>
84 /// <returns>cookie值</returns>
85 public static string GetCookie(string strName)
86 ...{
87 if (HttpContext.Current.Request.Cookies != null && HttpContext.Current.Request.Cookies[strName] != null)
88 ...{
89 return HttpContext.Current.Request.Cookies[strName].Value.ToString();
90 }
91
92 return "";
93 }
94
95
96
97 public static string CreateCheckCodeString()
98 ...{
99 //定义验证码的字符数组
100 char[] allCharArray = ...{ '0','1','2','3','4','5','6','7','8','9',
101 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O',
102 'P','Q','R','S','T','U','V','W','X','Y','Z'};
103
104 //定义验证码字符串
105 string randomCode = "";
106 Random rand = new Random();
107
108 //生成6位验证码字符串
109 for (int i = 0; i < 6; i++)
110 randomCode += allCharArray[rand.Next(allCharArray.Length)];
111 return randomCode;
112 }
113
114 /**//// <summary>
115 /// 生成验证码图片
116 /// </summary>
117 /// <param name="checkCode"></param>
118 public static void CreateCheckCodeImage()
119 ...{
120 string checkCode = CreateCheckCodeString();
121
122 //定义图片宽度
123 int iWidth = 80;
124 //定义图片高度
125 int iHeight = 22;
126 //定义大小为12pt的 Arial字体,用于绘制文字
127 Font font = new Font("Arial", 12, FontStyle.Bold);
128 //定义黑色的单色画笔,用于绘制文字
129 SolidBrush brush = new SolidBrush(Color.Red);
130 //定义钢笔,用户绘制干扰线
131 Pen pen1 = new Pen(Color.SeaGreen, 0); //注意这里直接获得一个现有的Color对象
132 Pen pen2 = new Pen(Color.FromArgb(255, 255, 255), 0); //注意这里根据Argb值获得了一个Color对象
133
134 //创建一个px*20px的图象
135 Bitmap image = new Bitmap(iWidth, iHeight);
136 //从图象获得一个绘图面
137 Graphics g = Graphics.FromImage(image);
138 //清除整个绘图画面并以指定颜色填充
139 g.Clear(ColorTranslator.FromHtml("#FFFFFF")); //注意这里从html颜色代码获取Color对象
140 //定义文字的绘制矩形区域
141 RectangleF rect = new RectangleF(8, 3, iWidth, iHeight);
142 //定义一个随机对象，用于绘制干扰线
143 Random rand = new Random();
144 //生成两条横向干扰线
145 for (int i = 0; i < 3; i++)
146 ...{
147 //定义起点
148 Point p1 = new Point(0, rand.Next(iHeight));
149 //定义终点
150 Point p2 = new Point(iWidth, rand.Next(iHeight));
151 //绘制直线
152 g.DrawLine(pen1, p1, p2);
153 }
154
155 //生成4条纵向干扰线
156 for (int i = 0; i < 5; i++)
157 ...{
158 //定义起点
159 Point p1 = new Point(rand.Next(iHeight), 0);
160 //定义终点
161 Point p2 = new Point(rand.Next(iHeight), iHeight);
162 //绘制直线
163 g.DrawLine(pen2, p1, p2);
164 }
165
166 //绘制验证码文字
167 g.DrawString(checkCode, font, brush, rect);
168 //保存图片为Jpeg格式
169 //ImageFormat.后面能更改保存图片的格式类型
170 MemoryStream ms = new MemoryStream();
171 image.Save(ms, ImageFormat.Jpeg);
172 HttpContext.Current.Response.ClearContent();
173 HttpContext.Current.Response.ContentType = "image/Jpeg";
174 HttpContext.Current.Response.BinaryWrite(ms.ToArray());
175 HttpContext.Current.Session["code"] = checkCode;
176 //释放对象
177 g.Dispose();
178 image.Dispose();
179 }
180
181
182 /**//// <summary>
183 /// 获得页码显示链接
184 /// </summary>
185 /// <param name="curPage">当前页数</param>
186 /// <param name="countPage">总页数</param>
187 /// <param name="url">超级链接地址</param>
188 /// <param name="extendPage">周边页码显示个数上限</param>
189 /// <returns>页码html</returns>
190 public static string GetPageNumbers(int curPage, int countPage, string url, int extendPage)
191 ...{
192 return GetPageNumbers(curPage, countPage, url, extendPage, "page");
193 }
194
195 /**//// <summary>
196 /// 获得页码显示链接
197 /// </summary>
198 /// <param name="curPage">当前页数</param>
199 /// <param name="countPage">总页数</param>
200 /// <param name="url">超级链接地址</param>
201 /// <param name="extendPage">周边页码显示个数上限</param>
202 /// <param name="pagetag">页码标记</param>
203 /// <returns>页码html</returns>
204 public static string GetPageNumbers(int curPage, int countPage, string url, int extendPage, string pagetag)
205 ...{
206 //return GetPageNumbers(curPage, countPage, url, extendPage, pagetag, null);
207 if (pagetag == "")
208 pagetag = "page";
209 int startPage = 1;
210 int endPage = 1;
211
212 if (url.IndexOf("?") > 0)
213 ...{
214 url = url + "&";
215 }
216 else
217 ...{
218 url = url + "?";
219 }
220
221
222 string t1 = "<a href=\"javascript:void(0);\" onclick=\"linkto('" + url + "&" + pagetag + "=1" + "')\">«</a>";
223 string t2 = "<a href=\"javascript:void(0);\" onclick=\"linkto('" + url + "&" + pagetag + "=" + countPage + "')\">»</a>";
224
225 if (countPage < 1)
226 countPage = 1;
227 if (extendPage < 3)
228 extendPage = 2;
229
230 if (countPage > extendPage)
231 ...{
232 if (curPage - (extendPage / 2) > 0)
233 ...{
234 if (curPage + (extendPage / 2) < countPage)
235 ...{
236 startPage = curPage - (extendPage / 2);
237 endPage = startPage + extendPage - 1;
238 }
239 else
240 ...{
241 endPage = countPage;
242 startPage = endPage - extendPage + 1;
243 t2 = "";
244 }
245 }
246 else
247 ...{
248 endPage = extendPage;
249 t1 = "";
250 }
251 }
252 else
253 ...{
254 startPage = 1;
255 endPage = countPage;
256 t1 = "";
257 t2 = "";
258 }
259
260 StringBuilder s = new StringBuilder("");
261
262 s.Append(t1);
263 for (int i = startPage; i <= endPage; i++)
264 ...{
265 if (i == curPage)
266 ...{
267 s.Append("<span>");
268 s.Append(i);
269 s.Append("</span>");
270 }
271 else
272 ...{
273 s.Append("<a href=\"javascript:void(0);\" onclick=\"linkto('");
274 s.Append(url);
275 s.Append(pagetag);
276 s.Append("=");
277 s.Append(i);
278 s.Append("')\">");
279 s.Append(i);
280 s.Append("</a>");
281 }
282 }
283 s.Append(t2);
284
285 return s.ToString();
286 }
287
288 /**////// <summary>
289 ///// 获得页码显示链接
290 ///// </summary>
291 ///// <param name="curPage">当前页数</param>
292 ///// <param name="countPage">总页数</param>
293 ///// <param name="url">超级链接地址</param>
294 ///// <param name="extendPage">周边页码显示个数上限</param>
295 ///// <param name="pagetag">页码标记</param>
296 ///// <param name="anchor">锚点</param>
297 ///// <returns>页码html</returns>
298 //public static string GetPageNumbers(int curPage, int countPage, string url, int extendPage, string pagetag, string anchor)
299 //{
300 // if (pagetag == "")
301 // pagetag = "page";
302 // int startPage = 1;
303 // int endPage = 1;
304
305 // if (url.IndexOf("?") > 0)
306 // {
307 // url = url + "&";
308 // }
309 // else
310 // {
311 // url = url + "?";
312 // }
313
314 // string t1 = "<a href=\"" + url + "&" + pagetag + "=1";
315 // string t2 = "<a href=\"" + url + "&" + pagetag + "=" + countPage;
316 // if (anchor != null)
317 // {
318 // t1 += anchor;
319 // t2 += anchor;
320 // }
321 // t1 += "\">«</a>";
322 // t2 += "\">»</a>";
323
324 // if (countPage < 1)
325 // countPage = 1;
326 // if (extendPage < 3)
327 // extendPage = 2;
328
329 // if (countPage > extendPage)
330 // {
331 // if (curPage - (extendPage / 2) > 0)
332 // {
333 // if (curPage + (extendPage / 2) < countPage)
334 // {
335 // startPage = curPage - (extendPage / 2);
336 // endPage = startPage + extendPage - 1;
337 // }
338 // else
339 // {
340 // endPage = countPage;
341 // startPage = endPage - extendPage + 1;
342 // t2 = "";
343 // }
344 // }
345 // else
346 // {
347 // endPage = extendPage;
348 // t1 = "";
349 // }
350 // }
351 // else
352 // {
353 // startPage = 1;
354 // endPage = countPage;
355 // t1 = "";
356 // t2 = "";
357 // }
358
359 // StringBuilder s = new StringBuilder("");
360
361 // s.Append(t1);
362 // for (int i = startPage; i <= endPage; i++)
363 // {
364 // if (i == curPage)
365 // {
366 // s.Append("<span>");
367 // s.Append(i);
368 // s.Append("</span>");
369 // }
370 // else
371 // {
372 // s.Append("<a href=\"");
373 // s.Append(url);
374 // s.Append(pagetag);
375 // s.Append("=");
376 // s.Append(i);
377 // if (anchor != null)
378 // {
379 // s.Append(anchor);
380 // }
381 // s.Append("\">");
382 // s.Append(i);
383 // s.Append("</a>");
384 // }
385 // }
386 // s.Append(t2);
387
388 // return s.ToString();
389 //}
390 }
391
}
392
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