How to increment numeric string ?

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.NET4.5

hi all,
i have one form in which there are 2 textboxes one for rows till what range number should increment and second textbox initial input

i want to increment numeric string.
it is dynamic
If i have 20 rows and have number is "0001"
following example:

then it should be incremented and shown in string format as
0002
0003
0004
0005
0006
0007
0008
0009
0010
0011
0012
0013
and so on

and one it comes to 10 onwards

it should be
0010
0011
0012
0013
and so on.

how can i achieve this?
help will be appreciable

thanks

Posted 18-Aug-14 2:54am

shivani 2013

Updated 18-Aug-14 3:26am

v2

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Sergey Alexandrovich Kryukov · Answer 1 · 2014-08-18T06:53:00

There is no such concepts as "numeric string" and "increment a string". Your question reflects a very bad trend: to work with strings representing data, instead of data instead. Your data should not be in string in first place, it should be in some appropriate numeric type.
As to the text box setting up "initial input", this is just a bad idea. You need to review your design.

If you explain your ultimate goals, I will be able to explain more.

—SA

RaisKazi · Answer 2 · 2014-08-18T03:10:00

Solution 2

You can pad your number with leading Zeros as below. In below example it specifies how many Decimal numbers to print. If you have one digit number then it will pad it with 3 leading Zeros.

C#

int number = 1;
string sNumber = number.ToString("D4");

Have a look at below link for more details.

http://msdn.microsoft.com/en-us/library/dd260048(v=vs.110).aspx

Posted 18-Aug-14 3:10am

RaisKazi

Comments

shivani 2013 18-Aug-14 9:16am

leading zeros are dynamic.there can be 2 , 3 , 4 depending upon user

RaisKazi 18-Aug-14 11:54am

It will add dynamic no of Zeros, based on number of digits in your number.

Sergey Alexandrovich Kryukov 18-Aug-14 12:54pm

That's correct (I voted 4), but you did not address the root problem. The data should not be a string in first place. Please see my answer.
—SA

shivani 2013 · Answer 3 · 2014-08-18T03:26:00

Solution 3

C#

int length = invoiceNumberFormat.ToString().Length ;
                string dValue = "D" + length.ToString();

Posted 18-Aug-14 3:26am

shivani 2013

Comments

Sergey Alexandrovich Kryukov 18-Aug-14 12:56pm

Please see the comments to Solution 2. The format is not known in advance. But you can calculate the format itself, depending on input. (I voted 4.)
The real problem is bad OP's design. Please see my answer.
—SA

sandip1711 · Answer 4 · 2014-08-18T03:00:00

Solution 1

Try This
suppose
tb1=20
tb2=0001

int YourNo=Convert.ToInt32(tb2.text);

for(int i=YourNo;i>=i+Convert.ToInt32(tb1.text);i++)
{
    String sNo1=i.ToString("0000");
}

Posted 18-Aug-14 3:00am

sandip1711

Updated 18-Aug-14 3:17am

v3

Comments

shivani 2013 18-Aug-14 9:08am

thanks for reply.its dynamic .... for more clarification i have updated my question.

sandip1711 18-Aug-14 9:18am

Please check Solution.
Hope this will work