WebUI.cs
来源：互联网 发布：上海高中升学率 知乎 编辑：程序博客网 时间：2024/06/10 02:44
using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Text;/// <summary>/// WebUI 的摘要说明/// </summary>public class WebUI{ public WebUI() { // // TODO: 在此处添加构造函数逻辑 // } #region MD5加密 /// <summary> /// MD5加密 /// </summary> /// <param name="pwd">需要加密的字符串</param> /// <param name="move">偏移量</param> /// <returns>加密后字符串</returns> public static string GetMD5Str(string pwd, string move) { System.Security.Cryptography.MD5CryptoServiceProvider md5 = new System.Security.Cryptography.MD5CryptoServiceProvider(); byte[] bytValue, bytHash; bytValue = System.Text.Encoding.UTF8.GetBytes(move + pwd); bytHash = md5.ComputeHash(bytValue); md5.Clear(); string pwdMD5Str = ""; for (int i = 0; i < bytHash.Length; i++) { pwdMD5Str += bytHash[i].ToString("x").PadLeft(2, '0'); } return pwdMD5Str; } //WebUI.GetMD5Str(pwd, "") #endregion #region Cookie登陆验证 public static void isLogin() { if (HttpContext.Current.Request.Cookies["myCookie"] == null) { HttpContext.Current.Response.Redirect("~/Login.aspx"); } } #endregion #region Alert()提示 /// <summary> /// 弹出JavaScript小窗口 /// </summary> /// <param name="js">窗口信息</param> public static void Alert(string message, Page page) { string js = @"<Script language='JavaScript'> alert('" + message + "');</Script>"; if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "alert")) { page.ClientScript.RegisterStartupScript(page.GetType(), "alert", js); } } /// <summary> /// 弹出消息框并且转向到新的URL /// </summary> /// <param name="message">消息内容</param> /// <param name="toURL">连接地址</param> public static void AlertAndRedirect(string message, string toURL, Page page) { string js = "<script language=javascript>alert('{0}');window.location.href('{1}')</script>"; if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "AlertAndRedirect")) { page.ClientScript.RegisterStartupScript(page.GetType(), "AlertAndRedirect", string.Format(js, message, toURL)); } } #endregion #region 上传图片 /// <summary> /// 上传图片 /// </summary> /// <param name="fileUpName">FileUpload控件名</param> /// <param name="imageUrl">上传文件夹路径</param> /// <param name="dataUrl">插入数据库的路径值</param> /// <returns></returns> public static string UpLoadImage(System.Web.UI.WebControls.FileUpload fileUpName, string imageUrl) { string dataUrl = ""; if (fileUpName.HasFile) { string fullfilename = fileUpName.PostedFile.FileName;//上传文件 本地 路径 string type = fullfilename.Substring(fullfilename.LastIndexOf(".") + 1).ToLower(); //得到加载文件的扩展名 if (type.Equals("jpg") || type.Equals("bmp") || type.Equals("gif") || type.Equals("png") || type.Equals("jpeg")) { Random rd = new System.Random(); //string filename = fullfilename.Substring(fullfilename.LastIndexOf("\\") + 1); //上传的文件名 dataUrl = DateTime.Now.ToString("yyy-MM-dd") + rd.Next(10000).ToString() + "." + type; //数据库字段值 string serverpath = System.Web.HttpContext.Current.Server.MapPath(imageUrl) + dataUrl; //上传路径 fileUpName.PostedFile.SaveAs(serverpath); } } return dataUrl; } #endregion #region 上传文件 /// <summary> /// 上传文件 /// </summary> /// <param name="fileUpName">FileUpload控件名</param> /// <param name="fileUrl">上传文件夹路径</param> /// <param name="dataUrl">插入数据库的路径值</param> /// <returns></returns> public static string UpLoadFile(System.Web.UI.WebControls.FileUpload fileUpName, string fileUrl) { string dataUrl = ""; if (fileUpName.HasFile) { Random rd = new System.Random(); string filepath = fileUpName.PostedFile.FileName; //上传文件 本地 路径 //dataUrl = filepath.Substring(filepath.LastIndexOf("\\") + 1); //上传的文件名 string filename = filepath.Substring(filepath.LastIndexOf("\\") + 1); //上传的文件名 dataUrl = filename; //数据库字段值 string serverpath = System.Web.HttpContext.Current.Server.MapPath(fileUrl) + dataUrl; //上传路径 fileUpName.PostedFile.SaveAs(serverpath); } return dataUrl; } #endregion #region 截取字符串 /// <summary> /// 截取字符串 /// </summary> /// <param name="strString">字符串</param> /// <param name="intLength">长度</param> /// <returns></returns> public static string SubString(string input, int p) { Encoding encode = Encoding.GetEncoding("gb2312"); byte[] byteArr = encode.GetBytes(input); if (byteArr.Length <= p) return input; int m = 0, n = 0; foreach (byte b in byteArr) { if (n >= p) break; if (b > 127) m++; //重要一步：对前p个字节中的值大于127的字符进行统计 n++; } if (m % 2 != 0) n = p + 1; //如果非偶：则说明末尾为双字节字符，截取位数加1 return encode.GetString(byteArr, 0, n); } #endregion #region Seo设置 /// <summary> /// Seo设置 /// </summary> /// <param name="seoTitle">标题</param> /// <param name="seoKeyWords">关键字</param> /// <param name="seoDescription">描述</param> /// <param name="page"></param> public static void setMeta(string seoTitle, string seoKeyWords, string seoDescription, Page page) { page.Title = seoTitle; System.Web.UI.HtmlControls.HtmlMeta hmKey = new HtmlMeta(); hmKey.Name = "keywords"; hmKey.Content = seoKeyWords; System.Web.UI.HtmlControls.HtmlMeta hmDes = new HtmlMeta(); hmDes.Name = "description"; hmDes.Content = seoDescription; System.Web.UI.Page p = (System.Web.UI.Page)System.Web.HttpContext.Current.Handler; p.Header.Controls.Add(hmKey); p.Header.Controls.Add(hmDes); } ///// <summary> ///// 调用示例 ///// </summary> //public void BindSeo() //{ // string sql = string.Format("select Title,KeyWord,Contents from T_Seo where id=1"); // DataTable dt = DBHelper.GetDataTable(sql); // WebUI.setMeta(dt.Rows[0]["Title"].ToString(), dt.Rows[0]["KeyWord"].ToString(), dt.Rows[0]["Contents"].ToString(), this.Page); //} #endregion}
