Regular Expression to Check Zip Code

Regular Expression to Match Zip Code

Imports System.Text.RegularExpressions

Function IsValidZip(ByVal sZipCode As String)

Return Regex.IsMatch(sZipCode, "^\d{5}(\-\d{4})?$")

End Function

The above will check for U.S . Zip codes like 55001-2434. 94941-3232 etc

To Check Indian Zip codes use

Imports System.Text.RegularExpressions

Function IsValidZip(ByVal sZipCode As String)

Return Regex.IsMatch(sZipCode, "^\d{6}$")

End Function

Matches 600040, 400123 etc

VB.NET Regular Expression to Check MAC Address

Regular Expression to Validate MAC Address

Imports System.Text.RegularExpressions

Function IsValid_MAC_Address(ByVal sMacAdd As String)

Return Regex.IsMatch(sMacAdd, "/^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$")

End Function

The above will check for MAC Address like 22:13:35:67:49:ab etc

See Also
Extract Ref Links From WebPage using VB.Net Regular Expressions
Remove HTML Tags from String using .NET Regular Expressions
VB.NET Regular Expression to Check URL
VB.NET Regular Expression to Check Email Addresses
VB.NET Regular Expression to Check MAC Address
Regular Expression to Check Zip Code
Validate eMail Addresses using VB.NET Function
Regular Expressions in Dot Net (.NET)

Regular Expression to Check Zip Code

Regular Expression to Match Zip Code

Imports System.Text.RegularExpressions

Function IsValidZip(ByVal sZipCode As String)

Return Regex.IsMatch(sZipCode, "^\d{5}(\-\d{4})?$")

End Function

The above will check for U.S . Zip codes like 55001-2434. 94941-3232 etc

To Check Indian Zip codes use

Imports System.Text.RegularExpressions

Function IsValidZip(ByVal sZipCode As String)

Return Regex.IsMatch(sZipCode, "^\d{6}$")

End Function

Matches 600040, 400123 etc

See Also
Extract Ref Links From WebPage using VB.Net Regular Expressions
Remove HTML Tags from String using .NET Regular Expressions
VB.NET Regular Expression to Check URL
VB.NET Regular Expression to Check Email Addresses
VB.NET Regular Expression to Check MAC Address
Regular Expression to Check Zip Code
Validate eMail Addresses using VB.NET Function
Regular Expressions in Dot Net (.NET)

Regular Expressions in Dot Net (.NET)

Finding Duplicate Words in a String using .NET Regular Expressions

Regular Expressions (REGEX) does wonders in programming. Here is a simple Regex code that identifies duplicate words like 'the the', 'something something' etc. Probably copyeditors can use this code to do the work that Microsoft Spell check does

Sub Regex_Checker_Duplicate_Words()

Dim oRegex As Regex

Dim sPattern As String

Dim oMatches As Match

Dim sText As String

sText = " the the category catastropic cat cat and rat b b "

sPattern = "\b([a-zA-Z]+)\s+\1"

oRegex = New Regex(sPattern)

oMatches = oRegex.Match(sText, sPattern)

While oMatches.Success

MsgBox(oMatches.Groups(0).Value.ToString)

oMatches = oMatches.NextMatch

End While

End Sub

Returns a new Match with the results for the next match, starting at the position at which the last match ended (at the character beyond the last matched character).

See Also
Extract Ref Links From WebPage using VB.Net Regular Expressions
Remove HTML Tags from String using .NET Regular Expressions
VB.NET Regular Expression to Check URL
VB.NET Regular Expression to Check Email Addresses
VB.NET Regular Expression to Check MAC Address
Regular Expression to Check Zip Code
Validate eMail Addresses using VB.NET Function
Regular Expressions in Dot Net (.NET)