Regular expression to get and find the numbers presented at the end of a string

Question

Hi Experts,

I am creating a WPF application in which i needed check a string whether it is having any numbers present at the end of the string and also i want to get the numbers.

Ex:

string- adcd123; // This is the string am having. In which i want get the 123 in int variable.

Please help me anybody and help with code would be appreciated

Answer 1

\d+$

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Answer 2

Hi Ramesh,

 Please find the code..

int number;
var match = Regex.Match(inputString,@"(\d+)$");
if(match != null)
    number = int.Parse(match.Groups[1].ToString());

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Sai Kumar K http://www.santoshtechnologies.com http://saimaterial.wordpress.com

Answer 3

upper example shows using Regular expressions, 

but if your stirng(s) is/are static, that means that letters and numbers are always in same lenght, you can use Substring method:

string text = "adcd123";
int num = int.Parse(text.Substring(4,3));

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Mitja

Answer 4

Hi,

Thank you for your quick response.

Also i would like to know that how to check whether the string contains "Datatime" value at the end of a string.

Please help me anybody.

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-Ramesh

Answer 5

Hi,

Thank you for your quick response.

Also i would like to know that how to check whether the string contains "Datatime" value at the end of a string.

Please help me anybody.

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-Ramesh

Your welcome.  You may want to pose this as a new question, but you are going to need to add more constraints.  Date / Time display can change based upon how you tell it to format and locale data.

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It would be greatly appreciated if you would mark any helpful entries as helpful and if the entry answers your question, please mark it with the Answer link.

Answer 6

Hi,

Yes, No problem you may post this as a new query..

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-Ramesh

Answer 7

To get a date from the string, or simply check if there is any date inside a string (if contains it), can do some expirimental code like:

bool hasDate = false;
DateTime dateTime = new DateTime();
string[] inputText = txtWords.Text().Split(" ");//split on a whitespace

foreach( String text in inputText )
{  
   try
   {
      dateTime = DateTime.Parse( text );
      hasDate = true;
      break;//no need to execute/loop further if you have your date
   }
   catch( Exception ex )
   {
      
   }
}
 
//after breaking from the foreach loop, you can check if hasDate=true
//if it is, then your user entered a date and you can retrieve it from the dateTime 

if( hasDate )
{
    //user entered a date, get it from dateTime
}
else
{
   //user didn't enter any date
}

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Mitja