How do I compare two textboxes for certain part.

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I am trying to figure out how to compare certain part of the number in textbox1 with certain part of the number from textbox2 in C# window forms at button click.

For ex.
textbox1 value 1232016000001 (13 digit)
textbox2 value 1201502212121 (13 digit)

I ma trying to compare year value from textbox1 which is 2016 to value 2015 from other textbox. I need advice what can I use or this purpose.

All help is appreciated.

Thanks.

What I have tried:

I am trying to get some idea like, if I can user array or list.

Posted 14-Jun-16 10:55am

Member 12076824

Updated 14-Jun-16 12:29pm

v3

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BillWoodruff 14-Jun-16 17:35pm

If the text content of each data item is always 13 characters and you know the date is in characters 4~7 of that string, this is very simple. You should make an attempt to write this yourself, first studying the Methods provided by the 'String Class.

Note: your second string has 12 characters, not 13.

Member 12076824 14-Jun-16 17:38pm

Thanks for reply Bill.Both are supposed to be 13, I will give that a try.

BillWoodruff 14-Jun-16 18:40pm

Good ! Keep in mind that if you don't have full control over the data you are handling, you may need to do some checking for valid data. imho a good programming practice is to always check and validate data as "early" in the code as you can. Mistakes will happen :)

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Member 12076824 · Accepted Answer · 2016-06-14T12:29:00

Solution 1

string txt1= txt1.Text.Substring(3, 4).ToString();
string txt2= txt2.Text.Substring(1, 4).ToString();

if(txt1 !=txt2)
{
do something
}

Posted 14-Jun-16 12:29pm

Member 12076824

Updated 26-Aug-16 9:25am

v2

Comments

BillWoodruff 14-Jun-16 21:48pm

Please do not post code here as a solution that you have not verified is correct.

Your first use of 'Substring will return "201600" ... the second use will return "2015"