Generate sequential string.......

Question

3.00/5 (1 vote)

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C#

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

namespace check_conver
{
    class Program
    {
        //inp should be like FILE0001
        public void Conert(string inp)
        {
            Console.WriteLine("String is :{0}", inp);
            string sr = inp.Replace("FILE", "");
            int countchar = Convert.ToInt32(sr.Length);
            int num = Convert.ToInt32(sr);
            int numlngth = Convert.ToInt32(Convert.ToString(num).Length);
            Console.WriteLine("After removing char,the string is : {0}", sr);
            Console.WriteLine("String Length After Replacing Char : {0}", countchar);
            Console.WriteLine("Now no for calculation is :{0}", num);
            Console.WriteLine("Zero's Before no Should Be :{0}", countchar - numlngth);


            //.. now i want .. next string should be like. FILE0002.. then FILE0003 and so on..

        }
        static void Main(string[] args)
        {
            Program p = new Program();
            p.Conert("FILE0001");
        }
    }
}

Posted 5-Jul-11 20:25pm

Anupam Singh

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Comments

Sergey Alexandrovich Kryukov 6-Jul-11 2:29am

What is non-sequential string? :-)
What is your problem?
--SA

[no name] 6-Jul-11 2:36am

actly dear.. Its a primary key in sql server Like FILE0001,so i want to increase it like FILE0002,FILE0003.... like this... being confuse.. coz its a string and if i m converting it to int for calculation after replacing FILE it showing 1 not 0001....
plz.. help me out here..

3 solutions

Solution 2

Use string.Format.

See:
http://msdn.microsoft.com/en-us/library/fht0f5be.aspx[^],
http://msdn.microsoft.com/en-us/library/b1csw23d.aspx[^].

You can learn format stings for numeric objects here:
http://msdn.microsoft.com/en-us/library/dwhawy9k.aspx[^],
http://msdn.microsoft.com/en-us/library/0c899ak8.aspx[^].

Don't write "", use string.Empty.

—SA

Posted 5-Jul-11 20:33pm

Sergey Alexandrovich Kryukov

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walterhevedeich · Accepted Answer · 2011-07-05T20:32:00

Solution 1

There's nothing that needs to be done on your Conert method. You do it on your Main method. Create a loop that will execute your method n times at the same time, incrementing your input parameter. You may refer to the following example.

C#

static void Main(string[] args)
{
   Program p = new Program();
   for(int i=1; i < 10; i++) //suppose you want FILE0001 to FILE0009
   {
      p.Conert("FILE000" + i.ToString());
   }
}

Posted 5-Jul-11 20:32pm

walterhevedeich

Comments

[no name] 6-Jul-11 2:38am

thanx.. dear.. but 1 to 9 is not fix...it can be FILE0999 then..

walterhevedeich 6-Jul-11 3:00am

I see. But the idea is there. It should be pretty easy to modify the code to suit your scenario.

[no name] 6-Jul-11 4:54am

Thanx Dear..

Om Prakash Pant · Accepted Answer · 2011-07-05T21:04:00

Try this:

C#

//inp should be like FILE0001
       public void Conert(string inp)
       {
           string sr = inp.Replace("FILE", "");
           int num = Convert.ToInt32(sr);
           int leadingzeros = (Convert.ToInt32(sr.Length) - Convert.ToInt32(Convert.ToString(num).Length)) ;
           int newlen = num.ToString("D").Length + leadingzeros;
           num += 1;
           MessageBox.Show("FILE" + num.ToString("D" + newlen.ToString()));
       }