Safely gets the substring depending on the length of original value and requested items Returns empty string if out of range. - CSharp System

CSharp examples for System:String SubString

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Description

Safely gets the substring depending on the length of original value and requested items Returns empty string if out of range.

Demo Code


using System;// ww w  .  ja  v a 2s. c  om

public class Main{
        /// <summary>
        /// Safely gets the substring depending on the length of original value and requested items
        /// Returns empty string if out of range.
        /// </summary>
        /// <param name="original"></param>
        /// <param name="startIndex"></param>
        /// <param name="length"></param>
        /// <returns></returns>
        public static string SafeSubstring(this string original, int startIndex, int length)
        {
            if (original.Length >= (startIndex + length))
            {
                return original.Substring(startIndex, length);
            }
            else
            {
                if (original.Length > startIndex)
                {
                    return original.Substring(startIndex);
                }
                else
                {
                    return string.Empty;
                }
            }
        }
}

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