//获取部分
public class GF_GET { /// <summary> /// 根据坐标点获取屏幕图像 /// </summary> /// <param name="x1">左上角横坐标</param> /// <param name="y1">左上角纵坐标</param> /// <param name="x2">右下角横坐标</param> /// <param name="y2">右下角纵坐标</param> /// <returns></returns> public static Image GetScreen( int x1, int y1, int x2, int y2) { int w = (x2 - x1); int h = (y2 - y1); Image myImage = new Bitmap(w, h); Graphics g = Graphics.FromImage(myImage); g.CopyFromScreen( new Point(x1, y1), new Point(0, 0), new Size(w, h)); IntPtr dc1 = g.GetHdc(); g.ReleaseHdc(dc1); return myImage; } /// <summary> /// 获取指定文件的扩展名 例: .txt /// </summary> /// <param name="fileName">指定文件名</param> /// <returns>扩展名</returns> public static string GetFileExtName( string fileName) { if (GF_IsOk.IsStrNullOrEmpty(fileName) || fileName.IndexOf( '.' ) <= 0) return "" ; fileName = fileName.ToLower().Trim(); return fileName.Substring(fileName.LastIndexOf( '.' ), fileName.Length - fileName.LastIndexOf( '.' )); } public static string GetSubString( string p_SrcString, int p_Length, string p_TailString) { return GetSubString(p_SrcString, 0, p_Length, p_TailString); } public static string GetUnicodeSubString( string str, int len, string p_TailString) { string result = string .Empty; // 最终返回的结果 int byteLen = System.Text.Encoding.Default.GetByteCount(str); // 单字节字符长度 int charLen = str.Length; // 把字符平等对待时的字符串长度 int byteCount = 0; // 记录读取进度 int pos = 0; // 记录截取位置 if (byteLen > len) { for ( int i = 0; i < charLen; i++) { if (Convert.ToInt32(str.ToCharArray()[i]) > 255) // 按中文字符计算加2 byteCount += 2; else // 按英文字符计算加1 byteCount += 1; if (byteCount > len) // 超出时只记下上一个有效位置 { pos = i; break ; } else if (byteCount == len) // 记下当前位置 { pos = i + 1; break ; } } if (pos >= 0) result = str.Substring(0, pos) + p_TailString; } else result = str; return result; } /// <summary> /// 取指定长度的字符串 /// </summary> /// <param name="p_SrcString">要检查的字符串</param> /// <param name="p_StartIndex">起始位置</param> /// <param name="p_Length">指定长度</param> /// <param name="p_TailString">用于替换的字符串</param> /// <returns>截取后的字符串</returns> public static string GetSubString( string p_SrcString, int p_StartIndex, int p_Length, string p_TailString) { string myResult = p_SrcString; Byte[] bComments = Encoding.UTF8.GetBytes(p_SrcString); foreach ( char c in Encoding.UTF8.GetChars(bComments)) { //当是日文或韩文时(注:中文的范围:\u4e00 - \u9fa5, 日文在\u0800 - \u4e00, 韩文为\xAC00-\xD7A3) if ((c > '\u0800' && c < '\u4e00' ) || (c > '\xAC00' && c < '\xD7A3' )) { //if (System.Text.RegularExpressions.Regex.IsMatch(p_SrcString, "[\u0800-\u4e00]+") || System.Text.RegularExpressions.Regex.IsMatch(p_SrcString, "[\xAC00-\xD7A3]+")) //当截取的起始位置超出字段串长度时 if (p_StartIndex >= p_SrcString.Length) return "" ; else return p_SrcString.Substring(p_StartIndex, ((p_Length + p_StartIndex) > p_SrcString.Length) ? (p_SrcString.Length - p_StartIndex) : p_Length); } } if (p_Length >= 0) { byte [] bsSrcString = Encoding.Default.GetBytes(p_SrcString); //当字符串长度大于起始位置 if (bsSrcString.Length > p_StartIndex) { int p_EndIndex = bsSrcString.Length; //当要截取的长度在字符串的有效长度范围内 if (bsSrcString.Length > (p_StartIndex + p_Length)) { p_EndIndex = p_Length + p_StartIndex; } else { //当不在有效范围内时,只取到字符串的结尾 p_Length = bsSrcString.Length - p_StartIndex; p_TailString = "" ; } int nRealLength = p_Length; int [] anResultFlag = new int [p_Length]; byte [] bsResult = null ; int nFlag = 0; for ( int i = p_StartIndex; i < p_EndIndex; i++) { if (bsSrcString[i] > 127) { nFlag++; if (nFlag == 3) nFlag = 1; } else nFlag = 0; anResultFlag[i] = nFlag; } if ((bsSrcString[p_EndIndex - 1] > 127) && (anResultFlag[p_Length - 1] == 1)) nRealLength = p_Length + 1; bsResult = new byte [nRealLength]; Array.Copy(bsSrcString, p_StartIndex, bsResult, 0, nRealLength); myResult = Encoding.Default.GetString(bsResult); myResult = myResult + p_TailString; } } return myResult; } /// <summary> /// 获取Email HostName 例 liyangfd@gmail.com 获取出来时@gmail.com /// </summary> /// <param name="strEmail"></param> /// <returns></returns> public static string GetEmailHostName( string strEmail) { if (strEmail.IndexOf( "@" ) < 0) { return "" ; } return strEmail.Substring(strEmail.LastIndexOf( "@" )).ToLower(); } /// <summary> /// 返回URL中结尾的文件名 /// </summary> public static string GetFilename( string url) { if (url == null ) { return "" ; } string [] strs1 = url.Split( new char [] { '/' }); return strs1[strs1.Length - 1].Split( new char [] { '?' })[0]; } /// <summary> /// 根据阿拉伯数字返回月份的名称(可更改为某种语言) /// </summary> public static string [] Monthes { get { return new string [] { "January" , "February" , "March" , "April" , "May" , "June" , "July" , "August" , "September" , "October" , "November" , "December" }; } } //判断部分 public class GF_IsOk { /// <summary> /// 判读是否是IP地址 /// </summary> /// <param name="in_str"></param> /// <returns></returns> public static bool IsIPStr( string in_str) { IPAddress ip; return IPAddress.TryParse(in_str, out ip); } /// <summary> /// 判断是否是数字 /// </summary> /// <param name="strNumber"></param> /// <returns></returns> public static bool IsNumber( string strNumber) { Regex objNotNumberPattern = new Regex( "[^0-9.-]" ); Regex objTwoDotPattern = new Regex( "[0-9]*[.][0-9]*[.][0-9]*" ); Regex objTwoMinusPattern = new Regex( "[0-9]*[-][0-9]*[-][0-9]*" ); String strValidRealPattern = "^([-]|[.]|[-.]|[0-9])[0-9]*[.]*[0-9]+$" ; String strValidIntegerPattern = "^([-]|[0-9])[0-9]*$" ; Regex objNumberPattern = new Regex( "(" + strValidRealPattern + ")|(" + strValidIntegerPattern + ")" ); return !objNotNumberPattern.IsMatch(strNumber) && !objTwoDotPattern.IsMatch(strNumber) && !objTwoMinusPattern.IsMatch(strNumber) && objNumberPattern.IsMatch(strNumber); } /// <summary> /// 判断是否是日期字符串 /// </summary> /// <param name="in_str"></param> /// <returns></returns> public static bool IsDateStr_yyyymmdd( string in_str) { if (in_str == "" ) return true ; if (in_str.Length != 8) return false ; return IsDateStr(in_str); } /// <summary> /// 判断是否是日期字符串 /// </summary> /// <param name="in_str"></param> /// <returns></returns> public static bool IsDateStr( string in_str) { if (in_str == "" ) return true ; if (in_str.Length == 8) in_str = in_str.Substring(0, 4) + "-" + in_str.Substring(4, 2) + "-" + in_str.Substring(6, 2); DateTime dtDate; bool bValid = true ; try { dtDate = DateTime.Parse(in_str); } catch (FormatException) { // 如果解析方法失败则表示不是日期性数据 bValid = false ; } return bValid; } /// <summary> /// 判断字符串中是否包含汉字,有返回true 否则为false /// </summary> /// <param name="str"></param> /// <returns></returns> public static bool IsExistHanZi( string str) { Regex reg = new Regex( @"[\u4e00-\u9fa5]" ); //正则表达式 if (reg.IsMatch(str)) { return true ; } else { return false ; } } /// <summary> /// 字段串是否为Null或为""(空) /// </summary> /// <param name="str"></param> /// <returns></returns> public static bool IsStrNullOrEmpty( string str) { if (str == null || str.Trim() == string .Empty) return true ; return false ; } /// <summary> /// 返回文件是否存在 /// </summary> /// <param name="filename">文件名</param> /// <returns>是否存在</returns> public static bool IsFileExists( string filename) { return System.IO.File.Exists(filename); } /// <summary> /// 检测是否符合email格式 /// </summary> /// <param name="strEmail">要判断的email字符串</param> /// <returns>判断结果</returns> public static bool IsValidEmail( string strEmail) { return Regex.IsMatch(strEmail, @"^[\w\.]+([-]\w+)*@[A-Za-z0-9-_]+[\.][A-Za-z0-9-_]" ); } public static bool IsValidDoEmail( string strEmail) { return Regex.IsMatch(strEmail, @"^@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$" ); } /// <summary> /// 检测是否是正确的Url /// </summary> /// <param name="strUrl">要验证的Url</param> /// <returns>判断结果</returns> public static bool IsURL( string strUrl) { return Regex.IsMatch(strUrl, @"^(http|https)\://([a-zA-Z0-9\.\-]+(\:[a-zA-Z0-9\.&%\$\-]+)*@)*((25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])|localhost|([a-zA-Z0-9\-]+\.)*[a-zA-Z0-9\-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{1,10}))(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\?\'\\\+&%\$#\=~_\-]+))*$" ); } /// <summary> /// 判断是否为base64字符串 /// </summary> /// <param name="str"></param> /// <returns></returns> public static bool IsBase64String( string str) { //A-Z, a-z, 0-9, +, /, = return Regex.IsMatch(str, @"[A-Za-z0-9\+\/\=]" ); } /// <summary> /// 检测是否有Sql危险字符 /// </summary> /// <param name="str">要判断字符串</param> /// <returns>判断结果</returns> public static bool IsSafeSqlString( string str) { return !Regex.IsMatch(str, @"[-|;|,|\/|\(|\)|\[|\]|\}|\{|%|@|\*|!|\']" ); } } /// <summary> /// 获得伪静态页码显示链接 /// </summary> /// <param name="curPage">当前页数</param> /// <param name="countPage">总页数</param> /// <param name="url">超级链接地址</param> /// <param name="extendPage">周边页码显示个数上限</param> /// <returns>页码html</returns> public static string GetStaticPageNumbers( int curPage, int countPage, string url, string expname, int extendPage) { return GetStaticPageNumbers(curPage, countPage, url, expname, extendPage, 0); } /// <summary> /// 获得伪静态页码显示链接 /// </summary> /// <param name="curPage">当前页数</param> /// <param name="countPage">总页数</param> /// <param name="url">超级链接地址</param> /// <param name="extendPage">周边页码显示个数上限</param> /// <param name="forumrewrite">当前版块是否使用URL重写</param> /// <returns>页码html</returns> public static string GetStaticPageNumbers( int curPage, int countPage, string url, string expname, int extendPage, int forumrewrite) { int startPage = 1; int endPage = 1; string t1 = "<a href=\"" + url + "-1" + expname + "\">«</a>" ; string t2 = "<a href=\"" + url + "-" + countPage + expname + "\">»</a>" ; if (forumrewrite == 1) { t1 = "<a href=\"" + url + "/1/list" + expname + "\">«</a>" ; t2 = "<a href=\"" + url + "/" + countPage + "/list" + expname + "\">»</a>" ; } if (forumrewrite == 2) { t1 = "<a href=\"" + url + "/\">«</a>" ; t2 = "<a href=\"" + url + "/" + countPage + "/\">»</a>" ; } if (countPage < 1) countPage = 1; if (extendPage < 3) extendPage = 2; if (countPage > extendPage) { if (curPage - (extendPage / 2) > 0) { if (curPage + (extendPage / 2) < countPage) { startPage = curPage - (extendPage / 2); endPage = startPage + extendPage - 1; } else { endPage = countPage; startPage = endPage - extendPage + 1; t2 = "" ; } } else { endPage = extendPage; t1 = "" ; } } else { startPage = 1; endPage = countPage; t1 = "" ; t2 = "" ; } StringBuilder s = new StringBuilder( "" ); s.Append(t1); for ( int i = startPage; i <= endPage; i++) { if (i == curPage) { s.Append( "<span>" ); s.Append(i); s.Append( "</span>" ); } else { s.Append( "<a href=\"" ); if (forumrewrite == 1) { s.Append(url); if (i != 1) { s.Append( "/" ); s.Append(i); } s.Append( "/list" ); s.Append(expname); } else if (forumrewrite == 2) { s.Append(url); s.Append( "/" ); if (i != 1) { s.Append(i); s.Append( "/" ); } } else { s.Append(url); if (i != 1) { s.Append( "-" ); s.Append(i); } s.Append(expname); } s.Append( "\">" ); s.Append(i); s.Append( "</a>" ); } } s.Append(t2); return s.ToString(); } /// <summary> /// 获得帖子的伪静态页码显示链接 /// </summary> /// <param name="expname"></param> /// <param name="countPage">总页数</param> /// <param name="url">超级链接地址</param> /// <param name="extendPage">周边页码显示个数上限</param> /// <returns>页码html</returns> public static string GetPostPageNumbers( int countPage, string url, string expname, int extendPage) { int startPage = 1; int endPage = 1; int curPage = 1; string t1 = "<a href=\"" + url + "-1" + expname + "\">«</a>" ; string t2 = "<a href=\"" + url + "-" + countPage + expname + "\">»</a>" ; if (countPage < 1) countPage = 1; if (extendPage < 3) extendPage = 2; if (countPage > extendPage) { if (curPage - (extendPage / 2) > 0) { if (curPage + (extendPage / 2) < countPage) { startPage = curPage - (extendPage / 2); endPage = startPage + extendPage - 1; } else { endPage = countPage; startPage = endPage - extendPage + 1; t2 = "" ; } } else { endPage = extendPage; t1 = "" ; } } else { startPage = 1; endPage = countPage; t1 = "" ; t2 = "" ; } StringBuilder s = new StringBuilder( "" ); s.Append(t1); for ( int i = startPage; i <= endPage; i++) { s.Append( "<a href=\"" ); s.Append(url); s.Append( "-" ); s.Append(i); s.Append(expname); s.Append( "\">" ); s.Append(i); s.Append( "</a>" ); } s.Append(t2); return s.ToString(); } /// <summary> /// 获得页码显示链接 /// </summary> /// <param name="curPage">当前页数</param> /// <param name="countPage">总页数</param> /// <param name="url">超级链接地址</param> /// <param name="extendPage">周边页码显示个数上限</param> /// <returns>页码html</returns> public static string GetPageNumbers( int curPage, int countPage, string url, int extendPage) { return GetPageNumbers(curPage, countPage, url, extendPage, "page" ); } /// <summary> /// 获得页码显示链接 /// </summary> /// <param name="curPage">当前页数</param> /// <param name="countPage">总页数</param> /// <param name="url">超级链接地址</param> /// <param name="extendPage">周边页码显示个数上限</param> /// <param name="pagetag">页码标记</param> /// <returns>页码html</returns> public static string GetPageNumbers( int curPage, int countPage, string url, int extendPage, string pagetag) { return GetPageNumbers(curPage, countPage, url, extendPage, pagetag, null ); } /// <summary> /// 获得页码显示链接 /// </summary> /// <param name="curPage">当前页数</param> /// <param name="countPage">总页数</param> /// <param name="url">超级链接地址</param> /// <param name="extendPage">周边页码显示个数上限</param> /// <param name="pagetag">页码标记</param> /// <param name="anchor">锚点</param> /// <returns>页码html</returns> public static string GetPageNumbers( int curPage, int countPage, string url, int extendPage, string pagetag, string anchor) { if (pagetag == "" ) pagetag = "page" ; int startPage = 1; int endPage = 1; if (url.IndexOf( "?" ) > 0) url = url + "&" ; else url = url + "?" ; string t1 = "<a href=\"" + url + "&" + pagetag + "=1" ; string t2 = "<a href=\"" + url + "&" + pagetag + "=" + countPage; if (anchor != null ) { t1 += anchor; t2 += anchor; } t1 += "\">«</a>" ; t2 += "\">»</a>" ; if (countPage < 1) countPage = 1; if (extendPage < 3) extendPage = 2; if (countPage > extendPage) { if (curPage - (extendPage / 2) > 0) { if (curPage + (extendPage / 2) < countPage) { startPage = curPage - (extendPage / 2); endPage = startPage + extendPage - 1; } else { endPage = countPage; startPage = endPage - extendPage + 1; t2 = "" ; } } else { endPage = extendPage; t1 = "" ; } } else { startPage = 1; endPage = countPage; t1 = "" ; t2 = "" ; } StringBuilder s = new StringBuilder( "" ); s.Append(t1); for ( int i = startPage; i <= endPage; i++) { if (i == curPage) { s.Append( "<span>" ); s.Append(i); s.Append( "</span>" ); } else { s.Append( "<a href=\"" ); s.Append(url); s.Append(pagetag); s.Append( "=" ); s.Append(i); if (anchor != null ) { s.Append(anchor); } s.Append( "\">" ); s.Append(i); s.Append( "</a>" ); } } s.Append(t2); return s.ToString(); } /// <summary> /// 判断文件流是否为UTF8字符集 /// </summary> /// <param name="sbInputStream">文件流</param> /// <returns>判断结果</returns> private static bool IsUTF8(FileStream sbInputStream) { int i; byte cOctets; // octets to go in this UTF-8 encoded character byte chr; bool bAllAscii = true ; long iLen = sbInputStream.Length; cOctets = 0; for (i = 0; i < iLen; i++) { chr = ( byte )sbInputStream.ReadByte(); if ((chr & 0x80) != 0) bAllAscii = false ; if (cOctets == 0) { if (chr >= 0x80) { do { chr <<= 1; cOctets++; } while ((chr & 0x80) != 0); cOctets--; if (cOctets == 0) return false ; } } else { if ((chr & 0xC0) != 0x80) return false ; cOctets--; } } if (cOctets > 0) return false ; if (bAllAscii) return false ; return true ; }