Class:
public
class
PhoneValidator {
static
IDictionary<
string
, Regex> countryRegex =
new
Dictionary<
string
, Regex>() {
{
"USA"
,
new
Regex(
"^[2-9]\\d{2}-\\d{3}-\\d{4}$"
)},
{
"UK"
,
new
Regex(
"(^1300\\d{6}$)|(^1800|1900|1902\\d{6}$)|(^0[2|3|7|8]{1}[0-9]{8}$)|(^13\\d{4}$)|(^04\\d{2,3}\\d{6}$)"
)},
{
"Netherlands"
,
new
Regex(
"(^\\+[0-9]{2}|^\\+[0-9]{2}\\(0\\)|^\\(\\+[0-9]{2}\\)\\(0\\)|^00[0-9]{2}|^0)([0-9]{9}$|[0-9\\-\\s]{10}$)"
)},
};
public
static
bool
IsValidNumber(
string
phoneNumber,
string
country) {
if
(country !=
null
&& countryRegex.ContainsKey(country))
return
countryRegex[country].IsMatch(phoneNumber);
else
return
false
;
}
public
static
IEnumerable<
string
> Countries {
get
{
return
countryRegex.Keys;
}
}
}
Calling:
if
(!PhoneValidator.IsValidNumber("+1-1234-232-232", "USA"))
Console.Writeline('Enter Valid Phone Number');
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