Easy.COMMON/DisposeString.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;
namespace Easy.COMMON
{
    public class DisposeString
    {
        // Methods
        public static string CheckInput(string str)
        {
            if (str == null)
            {
                str = "";
            }
            return str.Replace("'", "''");
        }

        public static int Cint(string str)
        {
            if ((str == null) || (str == ""))
            {
                return 0;
            }
            string sChar = "";
            string sNum = "0123456789";
            for (int i = 0; i < str.Length; i++)
            {
                sChar = str.Substring(i, 1);
                if (sNum.IndexOf(sChar) == -1)
                {
                    return 0;
                }
            }
            return Convert.ToInt32(str);
        }

        public static long GetFileSize(string _PathFile)
        {
            long sumSize = 0L;
            FileInfo fiInfo = new FileInfo(_PathFile);
            sumSize = fiInfo.Length;
            if (sumSize != 0L)
            {
                sumSize /= 0x400L;
            }
            return sumSize;
        }

        public static string GetShotString(string title, int len)
        {
            int titleLength = len;
            if (title.Trim().Length > titleLength)
            {
                title = title.Substring(0, titleLength - 1) + "...";
            }
            return title;
        }