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  • 截取字符串并去掉图片

     /// <summary>
            /// 截取字符串并去掉图片
            /// </summary>
            /// <param name="content">要处理的字符串</param>
            /// <param name="length">截取长度</param>
            /// <param name="tail">尾部特定字符</param>
            /// <returns></returns>
            public static string CutWithoutPic(string content, int length, string tail)
            {
                int conlength = content.Length;
                int begin = 0;
                int end = 0;
                int endcharlen = 3;
                string result = "";
                begin = content.ToLower().IndexOf("<img ", 0);
                if (begin == -1)
                {
                    begin = content.ToLower().IndexOf("<input type=\"image", 0);
                    if (begin != -1)
                    {
                        end = content.ToLower().IndexOf("/>", begin);
                        if (end == -1)
                        {
                            end = content.ToLower().IndexOf(">", begin);
                            endcharlen = 2;
                        }
                        if (end == -1)
                            end = content.ToLower().IndexOf("/ >", begin);
                        result += content.Substring(0, begin);
                        result += content.Substring(end + endcharlen);
                    }
                }
                result = content;
                return CutString(result, length, tail);
            }
    /// <summary>
            /// 按长度截取字符串并在尾部添加特定字符
            /// </summary>
            /// <param name="str">原字符串</param>
            /// <param name="length">截取长度</param>
            /// <param name="tail">尾部特定字符</param>
            /// <returns>返回截取后含有尾部的字符串</returns>
            public static string CutString(string str, int length, string tail)
            {
                if (string.IsNullOrEmpty(tail))
                    tail = "...";
                if (str.Length < length)
                    return str;
                else
                    return str.Substring(0, length) + tail;
            }
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  • 原文地址:https://www.cnblogs.com/zhang9418hn/p/2001541.html
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