Accepts a string like "ArrowRotateClockwise" and returns "arrow_rotate_clockwise.png". - CSharp System

CSharp examples for System:String Case

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Description

Accepts a string like "ArrowRotateClockwise" and returns "arrow_rotate_clockwise.png".

Demo Code

/*//from   ww  w  .  j  av a 2s .c om
 * @version   : 2.5.0
 * @author    : Ext.NET, Inc. http://www.ext.net/
 * @date      : 2014-10-20
 * @copyright : Copyright (c) 2008-2014, Ext.NET, Inc. (http://www.ext.net/). All rights reserved.
 * @license   : See license.txt and http://www.ext.net/license/. 
 * @website   : http://www.ext.net/
 */
using System.Web.UI;
using System.Web;
using System.Text.RegularExpressions;
using System.Text;
using System.Security.Cryptography;
using System.Globalization;
using System.ComponentModel;
using System.Collections.Generic;
using System.Collections;
using System;

public class Main{
        /// <summary>
        /// Accepts a string like "ArrowRotateClockwise" and returns "arrow_rotate_clockwise.png".
        /// </summary>
        public static string ToCharacterSeparatedFileName(this string name, char separator, string extension)
        {
            if (name.IsEmpty())
            {
                return name;
            }

            MatchCollection match = Regex.Matches(name, @"([A-Z]+)[a-z]*|\d{1,}[a-z]{0,}");

            string temp = "";
            
            for (int i = 0; i < match.Count; i++)
            {
                if (i != 0)
                {
                    temp += separator;
                }
                
                temp += match[i].ToString().ToLowerInvariant();
            }
            
            string format = (string.IsNullOrEmpty(extension)) ? "{0}{1}" : "{0}.{1}";
            
            return string.Format(format, temp, extension);
        }
        /// <summary>
        /// Determine is the string is null or empty.
        /// </summary>
        /// <param name="text"></param>
        /// <returns></returns>
        public static bool IsEmpty(this string text)
        {
            return string.IsNullOrEmpty(text);
        }
}

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