regExpression Help

[jeffery.kabir]

I'm trying to get a regular expression that matches only 4 digits, i'm
using

Regex.IsMatch(userID, "^\d{4}")

If the user types in more than 4 digits it still is being returned as a
match. Should I be using IsMatch, or is my regular expression wrong?
Thanks.

 

[nikki]

I'm trying to get a regular expression that matches only 4 digits, i'm
using

Regex.IsMatch(userID, "^\d{4}")

If the user types in more than 4 digits it still is being returned as a
match. Should I be using IsMatch, or is my regular expression wrong?
Thanks.

Try
Regex.IsMatch(userID, "^\d{4}$")

 

[Siva M]

Try "^\d{4}$"

I'm trying to get a regular expression that matches only 4 digits, i'm
using

Regex.IsMatch(userID, "^\d{4}")

If the user types in more than 4 digits it still is being returned as a
match. Should I be using IsMatch, or is my regular expression wrong?
Thanks.

 

[jjrdk]

I'm trying to get a regular expression that matches only 4 digits, i'm
using

Regex.IsMatch(userID, "^\d{4}")

If the user types in more than 4 digits it still is being returned as a
match. Should I be using IsMatch, or is my regular expression wrong?
Thanks.

Try "^\d{4}\z". I think you are forgetting to check for the end of the
string.

jjrdk