Validate Indian Currency using Regular Expression

Posted by NamrataC under WPF on 9/13/2010 | Points: 10 | Views : 18304 | Status : [Member] | Replies : 8

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Hi All,
I'm new to WPF. I want to validate amount field in my project using regular expression.
Here I want to allow user to enter only 1 decimal point.
Please help to resolve the issue.

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Posted by: T.saravanan on: 9/13/2010 [Member] [MVP] Silver | Points: 25

0	Hi, ^[0-9]{0,3}.?[0-9]{1}$ use this Regular Expression to Solve the issue. Here {0,3} --> No.of Integer (No.of Count before decimal point) {1} --> After decimal point (No.of Count) Cheers :) Thanks, T.Saravanan NamrataC, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: NamrataC on: 9/13/2010 [Member] Starter | Points: 25

0	Here decimal point is compulsory but I don't want decimal point to be compulsory. NamrataC, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: T.saravanan on: 9/13/2010 [Member] [MVP] Silver | Points: 25

0	Hey, Here I want to allow user to enter only 1 decimal point. --> It means... Thanks, T.Saravanan NamrataC, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: NamrataC on: 9/13/2010 [Member] Starter | Points: 25

0	It meant that if decimal entered only single decimal is to be entered. Also this expression allows alphabetic values too. I want only numeric values i.e. Indian Currency. NamrataC, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: T.saravanan on: 9/13/2010 [Member] [MVP] Silver | Points: 25

0	Hi, using Regex Condition You Can solve. if(!Regex.IsMatch(txtBox.Text,@"^[0-9]{0,3}.?[0-9]{1}$")) { // Your Error Message } else { // Allow to Next Level } // if Regex allow alphabetic value means Just check one Valid Method Private bool IsValidValue() { bool bVal=false; string[ ] sValue=txtBox.Text.Split('.'); try { for(int nlen=0;nlen<sValue.Length;nlen++) { if(int.Parse(sValue[nlen].ToString())>=0) // If you need change this Condition { bVal=true; } } } catch(Exception) { bVal=false } return bVal; } Just check this bool method in your event. ( Ex: if(! IsValidValue()) { // Error Message } Check this Code. Thanks, T.Saravanan NamrataC, if this helps please login to Mark As Answer. \| Alert Moderator

Hi,
using Regex Condition You Can solve.

if(!Regex.IsMatch(txtBox.Text,@"^[0-9]{0,3}.?[0-9]{1}$"))

{

  // Your Error Message

}

else

{

  // Allow to Next Level

}

// if Regex allow alphabetic value means Just check one Valid Method

Private bool IsValidValue()

{

  bool bVal=false;

 string[ ] sValue=txtBox.Text.Split('.');

 try

 {

  for(int nlen=0;nlen<sValue.Length;nlen++)

  {

    if(int.Parse(sValue[nlen].ToString())>=0) // If you need change this Condition

    {

      bVal=true;

    }

  }

 }

 catch(Exception)

  {

    bVal=false

  }

 return bVal;

}

Just check this bool method in your event. (
Ex:
if(! IsValidValue())
{
// Error Message
}

Check this Code.

Thanks,
T.Saravanan

NamrataC, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: NamrataC on: 9/13/2010 [Member] Starter | Points: 25

0	I meant your expression @"^[0-9]{0,3}.?[0-9]{1}$" is allowing alphabetic values which is not valid in currency field. NamrataC, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: T.saravanan on: 9/13/2010 [Member] [MVP] Silver | Points: 25

0	Ya, My Solution is only for to check the value is numeric or not. If you want textbox only allow to enter a numeric value means, to create a user control for numeric textbox.what ever condition you want means you can included in this user control. Thanks, Thanks, T.Saravanan NamrataC, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: NamrataC on: 9/13/2010 [Member] Starter | Points: 25

0	Okey. I thought this can be done by handling validation. I have used '@"[^\.\d]' this expression but it allows multiple decimal points NamrataC, if this helps please login to Mark As Answer. \| Alert Moderator

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