工具类

using System.Web;
using System.Data;
using System;

/// <summary>
///Util 的摘要说明
/// </summary>
public class Util
{
    /// <summary>
    /// 过滤字符串中的html代码
    /// </summary>
    /// <param name="Str">传入字符串</param>
    /// <returns>过滤后的字符串</returns>
    public string LostHTML(string Str)
    {
        string Re_Str = "";
        if (Str != null)
        {
            if (Str != string.Empty)
            {
                string Pattern = "<\\/*[^<>]*>";
                Re_Str = System.Text.RegularExpressions.Regex.Replace(Str, Pattern, "");
            }
        }
        return (Re_Str.Replace("\r", "")).Replace("\n", "").Replace("\t", "");
    }
    /// <summary>
    /// 获取指定长度字符串
    /// </summary>
    /// <param name="content">字符串内容</param>
    /// <param name="Num">字节的长度</param>
    /// <returns></returns>
    public string GetContent(object obj, int num)
    {
        string content = getToString(obj);
        if (content.Length < 1)
        {
            return "";
        }
        if (System.Text.Encoding.Default.GetBytes(content).Length > num)
        {
            int i = 0;
            string str = "";
            while (true)
            {
                string temp = str + content.Substring(i, 1);
                if (System.Text.Encoding.Default.GetBytes(temp).Length <= num)
                {
                    str = temp;
                }
                else
                {
                    return str;
                }
                i++;
            }
        }
        return content;
    }
    /// <summary>
    /// 获取指定长度字符串
    /// </summary>
    /// <param name="content">字符串内容</param>
    /// <param name="num">字节的长度</param>
    /// <param name="endstring">是否加省略字符串</param>
    /// <returns>截取后的字符串</returns>
    public string GetContent(object obj, int num, string endstring)
    {
        string content = getToString(obj);
        if (content.Length < 1)
        {
            return "";
        }
        if (endstring != null && endstring.Length > 0)
        {
            if (System.Text.Encoding.Default.GetBytes(content).Length > num)
            {
                return string.Format("{0}{1}", GetContent(content, num), endstring);
            }
        }
        return GetContent(content, num);
    }
    public string getJieSheng(object old, object cur)
    {
        return (getToDecimal(old) - getToDecimal(cur)).ToString("f2");
    }

    public bool getToBool(object obj)
    {
        if (obj == null)
            return false;
        bool flag = false;
        bool.TryParse(obj.ToString(), out flag);
        return flag;
    }
    public int getToInt(object obj)
    {
        if (obj == null)
            return 0;
        int def;
        int.TryParse(obj.ToString(), out def);
        return def;
    }
    public decimal getToDecimal(object obj)
    {
        decimal def = 0;
        if (obj == null)
            return def;
        decimal.TryParse(obj.ToString(), out def);
        return def;
    }
    public int getToInt(object obj, int def)
    {
        if (obj == null)
            return def;
        int.TryParse(obj.ToString(), out def);
        return def;
    }
    public string getToString(object obj)
    {
        if (obj == null)
            return "";
        string aa = obj.ToString().Trim();
        if (aa.Length < 1)
            return "";
        return aa;
    }
    public string getToString(object obj, string def)
    {
        if (obj == null)
            return def;
        string aa = obj.ToString().Trim();
        if (aa.Length < 1)
            return def;
        return aa;
    }
    HttpRequest request = HttpContext.Current.Request;
    public int getFormInt(string obj)
    {
        return getToInt(request.Form[obj]);
    }
    public string getFormString(string obj)
    {
        return getToString(request.Form[obj]);
    }
    public int getQueryStringInt(string obj)
    {
        return getToInt(request.QueryString[obj]);
    }
    public string getQueryStringString(string obj)
    {
        return getToString(request.QueryString[obj]);
    }
    public long getQueryStringLong(string obj)
    {
        return getToLong(request.QueryString[obj]);
    }
    public long getToLong(object obj)
    {
        long def = 0;
        if (obj == null)
            return def;
        long.TryParse(obj.ToString(), out def);
        return def;
    }

    public string getBanner(DataRow[] drs, int width, int height, string tag, int len)
    {
        System.Text.StringBuilder sb = new System.Text.StringBuilder();
        if (drs.Length > 0)
        {
            bool _target, _flag = tag.Length > 0 ? true : false;
            string _href, _title, _alt;
            int i = 0;
            foreach (DataRow dr in drs)
            {
                if (len == i && len != 0) { break; }
                i++;
                _href = getToString(dr["GetUrl"]);
                _title = getToString(dr["Title"]);
                _target = getToBool(dr["NewWindow"]);
                _alt = getToString(dr["Alt"]);
                if (_flag) { sb.AppendFormat("<{0}>", tag); }
                sb.AppendFormat("<a href='{0}'{1}{2}><img src='{3}'{5}{6}{4} /></a>",
                _href.Length > 0 ? _href : "#none", _title.Length > 0 ? " title='" + _title + "'" : "",
                _target ? " target='_blank'" : "", dr["Image"], _alt.Length > 0 ? " alt='" + _alt + "'" : "",
                width > 0 ? " width='" + width + "'" : "", height > 0 ? " height='" + height + "'" : "");
                if (_flag) { sb.AppendFormat("</{0}>", tag); }
            }
        }
        return sb.ToString();
    }
    public string getBanner(DataRow[] drs, int width, int height, string tag, int len, string css)
    {
        System.Text.StringBuilder sb = new System.Text.StringBuilder();
        if (drs.Length > 0)
        {
            bool _target, _flag = tag.Length > 0 ? true : false;
            string _href, _title, _alt;
            int i = 0;
            foreach (DataRow dr in drs)
            {
                if (len == i && len != 0) { break; }
                i++;
                _href = getToString(dr["GetUrl"]);
                _title = getToString(dr["Title"]);
                _target = getToBool(dr["NewWindow"]);
                _alt = getToString(dr["Alt"]);
                if (_flag) { sb.AppendFormat("<{0}{1}>", tag, css); }
                sb.AppendFormat("<a href='{0}'{1}{2}><img src='{3}'{5}{6}{4} /></a>",
                _href.Length > 0 ? _href : "#none", _title.Length > 0 ? " title='" + _title + "'" : "",
                _target ? " target='_blank'" : "", dr["Image"], _alt.Length > 0 ? " alt='" + _alt + "'" : "",
                width > 0 ? " width='" + width + "'" : "", height > 0 ? " height='" + height + "'" : "");
                if (_flag) { sb.AppendFormat("</{0}>", tag); }
            }
        }
        return sb.ToString();
    }
    public string getMatchProductImg(object obj, string size)
    {
        string pic = getToString(obj);
        if (pic.Length > 0)
        {
            return pic.Replace("/UploadImage/Product/", "/UploadImage/Product/Thumbnail/" + size + "/");
        }
        return "/images/nopic.jpg";
    }
    /// <summary>
    /// 获得分类的上级
    /// </summary>
    /// <param name="classid">当前分类编号</param>
    /// <returns>详细分类</returns>
    public string getParentStr(object classid)
    {
        System.Text.StringBuilder sb = new System.Text.StringBuilder();
        DataTable dt = new MySqlExecute().getDT(string.Format(@"with my as
(
select ClassID,ClassName,ParentID from TB_Category where ClassID={0}
union all
select aa.ClassID,aa.ClassName,aa.ParentID from my,TB_Category aa where my.ParentID=aa.ClassID and aa.ParentID<>0
) select * from my", classid));
        int len = dt.Rows.Count;
        if (len > 0)
        {
            for (int i = len - 1; i >= 0; i--)
            {
                sb.Append("<span>></span>");
                if (getToLong(dt.Rows[i]["ClassID"]) == getToLong(classid))
                {
                    sb.AppendFormat("<strong>{0}</strong>", dt.Rows[i]["ClassName"]);
                }
                else
                {
                    sb.AppendFormat("<a href='/product/?classid={0}'>{1}</a>", dt.Rows[i]["ClassID"], dt.Rows[i]["ClassName"]);
                }
            }
        }
        return sb.ToString();
    }
    /// <summary>
    /// 获得地区的上级
    /// </summary>
    /// <param name="classid">当前地区编号</param>
    /// <returns>详细地区</returns>
    public string getAddressStr(object classid)
    {
        System.Text.StringBuilder sb = new System.Text.StringBuilder();
        DataTable dt = new MySqlExecute().getDT(string.Format(@"with my as
(
select AreaID,AreaName,ParentID from TB_Area where AreaID={0}
union all
select aa.AreaID,aa.AreaName,aa.ParentID from my,TB_Area aa where my.ParentID=aa.AreaID and aa.ParentID<>0
) select * from my", classid));
        int len = dt.Rows.Count;
        if (len > 0)
        {
            for (int i = len - 1; i >= 0; i--)
            {
                sb.AppendFormat("{0}", dt.Rows[i]["AreaName"]);
            }
        }
        return sb.ToString();
    }
    public string getToDateStr(object obj)
    {
        return Convert.ToDateTime(obj).ToString("MM/dd/yyyy HH:mm:ss").Replace("-", "/");
    }
    public string getToBrStr(object obj)
    {
        return getToString(obj);//.Replace("\r\n", "<br />")
    }
    public string getSqlClear(string aa)
    {
        return aa.Replace("'", "''").Replace("[-|;|@|%]", "");
    }
}