VB.NET - Regular Expression to get all HREF's out of a String

This function will accept a string and return an arraylist of all the HREF's that were inside:

    ''' <summary>

    ''' Using regular expression to get HREF out of string

    '''

    ''' </summary>

    ''' <param name="inputString"></param>

    ''' <returns></returns>

    ''' <remarks></remarks>

    Public Shared Function GetHtmlTags(inputString As String) As ArrayList

        Dim m As Match

        Dim HRefPattern As String = "<img[^>]+src\\s*=\\s*['\""]([^'\""]+)['\""][^>]*>"

        Dim arrlist As New ArrayList

        Try

            'Using regular expression retrieve all HREFs from the datacontent string

            m = Regex.Match(inputString, HRefPattern, RegexOptions.IgnoreCase Or RegexOptions.Compiled)

            Do While m.Success

                'check to see if the link already exists in the arraylist before adding it again

                If arrlist.Contains(m.Groups(1).ToString()) = False Then

                    arrlist.Add(m.Groups(1).ToString())

                End If

                m = m.NextMatch()

            Loop

            Return arrlist

        Catch ex As Exception

            Throw ex

        End Try

    End Function

VB.NET - Write Text File Using StreamWriter

Imports System.IO

 Dim strDirectory As String = "C:\temp324\"

        If Directory.Exists(strDirectory) = False Then

            Directory.CreateDirectory(strDirectory)

        End If

        Using objWriter As StreamWriter = New StreamWriter(strDirectory & "\links.txt", False)

            objWriter.Write(txtText.Text)

        End Using

VB.NET - How to Print Content of Textbox

This Microsoft link will explain everything: Print Content of Textbox

VB.NET - Find Differences Between 2 Arrays

To get an array of common items between 2 arrays, use the .Except method off of the first array.

i.e.:

Dim strDifferences As String()
Dim strUserGroups As String()
Dim strOrgGroups As String()

strDifferences= strUserGroups.Except(strOrgGroups).ToArray()

VB.NET - Find Common Items Between 2 Arrays

To get an array of common items between 2 arrays, use the .Intersect method off of the first array.

i.e.:

Dim strSimilarities As String()
Dim strUserGroups As String()
Dim strOrgGroups As String()

strSimilarities = strUserGroups.Intersect(strOrgGroups).ToArray()

SQL - Update Statement from Join

UPDATE    p

SET       p.phone_ext = d.phone

FROM      people p

JOIN      directory d

ON        p.last_name = d.last_name

ASP.NET - Add Validator to Dynamically Created Control

Dim objValidator As New RegularExpressionValidator()

objValidator.ControlToValidate = txtItem.ClientID

objValidator.ValidationExpression = "[0-9]"

objValidator.Text = "*"

objValidator.ErrorMessage = "Must be in correct format"

objValidator.SetFocusOnError = True

phPlaceholder.Controls.Add(objValidator)