SenBiTeSolution.Common/StringHelp.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SenBiTeSolution.Common
{
    public partial class StringHelp
    {
        /// <summary>
        /// 将指定的字符串按指定长度截取并加上指定的后缀
        /// </summary>
        /// <param name="oldStr">原字符串</param>
        /// <param name="len">要截取的长度</param>
        /// <param name="str">超出长度的后缀</param>
        /// <returns></returns>
        public static string CutString(string oldStr,int len,string str)
        {
            if (!string.IsNullOrEmpty(oldStr))
            {
                if (oldStr.Length>len)
                {
                    string strTmp = oldStr.Substring(0, len);
                    if (string.IsNullOrEmpty(str))
                    {
                        return strTmp;
                    }
                    else
                    {
                        return strTmp + str;
                    }
                }
                else
                {
                    return oldStr;
                }
            }
            else
            {
                return "";
            }
           

        }
    }
}