number validation

[Unkn0wn]

Hello,

I'm trying to play with ismatch to validate number, my requirement is to have a 10digits which might includes dot(.) or hyphen(-) and I was able to achieve regex for some extent using "\(?[0-9]{3}\)?[.-]? *[0-9]{3}[.-]? *[.-]?[0-9]{4}" which helps me validating 123-456-7890 and 1234567890 and 123.456.7890 but it also showing valid for 123-456.789 and 123.456-789 which are invalid. is there a way to check or restrict the user whatever the character was entered for the first checked with next special character ? 

[indhaa]

Can you show your code. 

You can enter each scenario separately with an && so that its validate like that

[Unkn0wn]

Hi @indhaa the code is same isMatch(txtinput.text, "\(?[0-9]{3}\)?[.-]? *[0-9]{3}[.-]? *[.-]?[0-9]{4}")

Valid conditions

1234567890 

123-456-7890

123.456.7890

Invalid conditions

123-456.7890

123.456-7890

@StalinPonnusamy @RandyHayes @WarrenBelz @zmansuri  any help here

[indhaa]

Can you try like this . Just amend && to || depending on what you are trying to do

IsMatch(txtinput.Text,"\d{1,9}") && IsMatch(txtinput.Text,"\d{1,3}\-\d{1,3}\-\d{1,4}") && 
IsMatch(txtinput.Text,"\d{1,3}\.\d{1,3}\.\d{1,4}")

IsMatch(txtinput.Text,"\d{1,9}") || IsMatch(txtinput.Text,"\d{1,3}\-\d{1,3}\-\d{1,4}") || 
IsMatch(txtinput.Text,"\d{1,3}\.\d{1,3}\.\d{1,4}")

[StalinPonnusamy]

Hi @Unkn0wn 

Please try this 

IsMatch(txtinput.Text,"\(?[0-9]{3}\)?[.-]? *[0-9]{3}[.-]? *[.-]?[0-9]{4}") && !("-" in txtinput.Text && "." in txtinput.Text)

[Unkn0wn]

@StalinPonnusamy  perfect. but it is showing true for 123 456.7890 and 123.456 7890, 123-4567890 which should ideally be false

[indhaa · Accepted solution]

Use my formulae . I pasted that after testing

IsMatch(txtinput.Text,"\d{1,9}") || IsMatch(txtinput.Text,"\d{1,3}\-\d{1,3}\-\d{1,4}") || 
IsMatch(txtinput.Text,"\d{1,3}\.\d{1,3}\.\d{1,4}")

[StalinPonnusamy · Accepted solution]

Hi @Unkn0wn 

We can check space like

IsMatch(txtinput.Text,"\(?[0-9]{3}\)?[.-]? *[0-9]{3}[.-]? *[.-]?[0-9]{4}") && !("-" in txtinput.Text && "." in txtinput.Text) && !(" " in txtinput.Text)

but still, need to find the condition for 123-4567890

[StalinPonnusamy]

Hi @Unkn0wn

Please let us know if anything needs on your post. We can help with this.

Please do not forget to give kudos if you find the suggestion helpful or Accept it as a solution if works fine to help other users to find it useful.