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editing html string having text and several images using regex

I am new to this forum and hoping to get some help.
I have a an HTML string having text and several base64 images.
I need to loop through all image tags adding a slash / before
the closing tag > so that each image ends with /> and return
a new html string with the changes.
so each
<IMG src="data:image/png;base64,iVBORw0KG....">
should then be
<IMG src="data:image/png;base64,iVBORw0KG...."/>
I am not versed with html and I am wondering how to do it
(using regex?).
Here is some pseudo code:
Function GetSourceImges(Sourcehtml As String) As List(Of String)
Dim listOfImgs As New List(Of String)()
'use regex to find image tags
'Return list of base64 image tags
End Function
For each image in list
insert a slash appropriately
next
Reconstitute a new html string with edited images
Thanks

Map all "IMG" tags using LINQ and use their indexes as an anchor to fix the missing "/" characters. please see my comments inside the code.
Sub Main()
Dim htmlstring As String = "<IMG src=""data:image/png;base64,iVBORw0KG....""> " & vbCrLf _
& "<img src=""data:image/png;base64,iVBORw0KG...."">" & vbCrLf _
& "<p>blahblah</p>" & vbCrLf _
& "<IMG src=""data:image/png;base64,iVBORw0KG...."">" & vbCrLf _
& "<p>blahblah</p>"
' find all indxes of img using regex and lambda exprations '
Dim indexofIMG() As Integer = Regex.Matches(htmlstring, "IMG", RegexOptions.IgnoreCase) _
.Cast(Of Match)().Select(Function(x) x.Index).ToArray()
' check from each index of "IMG" if "/" is missing '
For Each itm As Integer In indexofIMG
Dim counter As Integer = itm
While counter < htmlstring.Length - 1
If htmlstring(counter) = ">" Then
If htmlstring(counter - 1) <> "/" Then
' fix the missing "/" using Insert() method '
htmlstring = htmlstring.Insert(counter, "/")
End If
Exit While
End If
counter += 1
End While
Next
Console.WriteLine(htmlstring)
Console.ReadLine()
End Sub

Surprisingly it works with the console app but doesn't when I view it on a richtextbox as in btnEditHTML method below. The generated pdf has only one red dot and not two.
Can't say why.
I must say you have been very helpfull.
'SetTable and customimagetagprocessor borrowed from [here] iTextsharp base64 embedded image in header not parsing/showing
Imports System.IO
Imports iTextSharp.text
Imports iTextSharp.tool.xml
Imports iTextSharp.text.pdf
Imports iTextSharp.tool.xml.parser
Imports iTextSharp.tool.xml.pipeline.css
Imports iTextSharp.tool.xml.pipeline.html
Imports iTextSharp.tool.xml.pipeline.end
Imports iTextSharp.tool.xml.html
Imports System.Text.RegularExpressions
Public Class Form1
Dim dsktop As String = My.Computer.FileSystem.SpecialDirectories.Desktop
Public Function GetFormattedHTML(str As String) As String
'format images by changing > to />
' find all indxes of img using regex and lambda exprations '
Dim indexofIMG() As Integer = Regex.Matches(str.ToString, "IMG", RegexOptions.IgnoreCase) _
.Cast(Of Match)().Select(Function(x) x.Index).ToArray()
' check from each index of "IMG" if "/" is missing '
For Each itm As Integer In indexofIMG
Dim counter As Integer = itm
While counter < str.ToString.Length - 1
If str(counter) = ">" Then
If str(counter - 1) <> "/" Then
' fix the missing "/" using Insert() method '
str = str.ToString.Insert(counter, " /")
End If
Exit While
End If
counter += 1
End While
Next
Return str.ToString
End Function
Private Sub btnEditHTML_Click(sender As Object, e As EventArgs) Handles btnEditHTML.Click
Rtb.Text = String.Empty
'the 2 base64 images in the html below are actually just small red dots
Dim RawHTML As String = "<P>John Doe</P><IMG " &
"src=""data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg==""> Jackson5<IMG " &
"src=""data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg=="">"
Rtb.Text = GetFormattedHTML(RawHTML)
'notice that the 2nd base64 string is not edited as required.
End Sub
Private Sub btnGenerate_Click(sender As Object, e As EventArgs) Handles btnGenerate.Click
'here I create a 2 column itextsharp table to parse my html into the cells
Dim doc As New iTextSharp.text.Document(iTextSharp.text.PageSize.A4, 25, 25, 25, 30)
Dim wri As PdfWriter = PdfWriter.GetInstance(doc, New System.IO.FileStream(dsktop & "\testtable.pdf", System.IO.FileMode.Create))
doc.Open()
'set table columnwidths -------------------------------------------------------------
Dim MainTable As New PdfPTable(2) '2 column table
MainTable.WidthPercentage = 100
Dim Wth(1) As Single
Dim u As Integer = 2
For i As Integer = 0 To 1
Wth(i) = CInt(Math.Floor(2 * 500 / u))
Next
MainTable.SetWidths(Wth)
Dim htmlstr As String = GetFormattedHTML("<P>John Doe</P><IMG " &
"src=""data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg==""> Jackson5<IMG " &
"src=""data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg=="">")
Dim Elmts = New ElementList()
Elmts = XMLWorkerHelper.ParseToElementList(htmlstr, Nothing)
Dim MinorTable As New PdfPTable(1)
MinorTable = SetTable(Elmts, htmlstr)
For i = 1 To 2
Dim Cell As New PdfPCell
Cell.AddElement(MinorTable)
MainTable.AddCell(Cell)
Next
doc.Add(MainTable)
doc.Close()
Process.Start(dsktop & "\testtable.pdf")
End Sub
Public Function SetTable(ByVal elements As ElementList, ByVal htmlcode As String) As PdfPTable
Dim tagProcessors As DefaultTagProcessorFactory = CType(Tags.GetHtmlTagProcessorFactory(), DefaultTagProcessorFactory)
tagProcessors.RemoveProcessor(HTML.Tag.IMG) ' remove the default processor
tagProcessors.AddProcessor(HTML.Tag.IMG, New CustomImageTagProcessor()) ' use our new processor
Dim cssResolver As ICSSResolver = XMLWorkerHelper.GetInstance().GetDefaultCssResolver(True)
cssResolver.AddCssFile(Application.StartupPath & "\pdf.css", True)
'see sample css file at https://learnwebcode.com/how-to-create-your-first-css-file/
'Setup Fonts
Dim xmlFontProvider As XMLWorkerFontProvider = New XMLWorkerFontProvider(XMLWorkerFontProvider.DONTLOOKFORFONTS)
xmlFontProvider.RegisterDirectory(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "assets/fonts/"))
Dim cssAppliers As CssAppliers = New CssAppliersImpl(xmlFontProvider)
Dim htmlContext As HtmlPipelineContext = New HtmlPipelineContext(cssAppliers)
htmlContext.SetAcceptUnknown(True)
htmlContext.SetTagFactory(tagProcessors)
Dim pdf As ElementHandlerPipeline = New ElementHandlerPipeline(elements, Nothing)
Dim htmlp As HtmlPipeline = New HtmlPipeline(htmlContext, pdf)
Dim css As CssResolverPipeline = New CssResolverPipeline(cssResolver, htmlp)
Dim worker As XMLWorker = New XMLWorker(css, True)
Dim p As XMLParser = New XMLParser(worker)
'Dim holderTable As New PdfPTable({1})
Dim holderTable As PdfPTable = New PdfPTable({1})
holderTable.WidthPercentage = 100
holderTable.HorizontalAlignment = Element.ALIGN_LEFT
Dim holderCell As New PdfPCell()
holderCell.Padding = 0
holderCell.UseBorderPadding = False
holderCell.Border = 0
p.Parse(New MemoryStream(System.Text.Encoding.ASCII.GetBytes(htmlcode)))
For Each el As IElement In elements
holderCell.AddElement(el)
Next
holderTable.AddCell(holderCell)
'Dim holderRow As New PdfPRow({holderCell})
'holderTable.Rows.Add(holderRow)
Return holderTable
End Function
End Class
Public Class CustomImageTagProcessor
Inherits iTextSharp.tool.xml.html.Image
Public Overrides Function [End](ctx As IWorkerContext, tag As Tag, currentContent As IList(Of IElement)) As IList(Of IElement)
Dim attributes As IDictionary(Of String, String) = tag.Attributes
Dim src As String = String.Empty
If Not attributes.TryGetValue(iTextSharp.tool.xml.html.HTML.Attribute.SRC, src) Then
Return New List(Of IElement)(1)
End If
If String.IsNullOrEmpty(src) Then
Return New List(Of IElement)(1)
End If
If src.StartsWith("data:image/", StringComparison.InvariantCultureIgnoreCase) Then
' data:[<MIME-type>][;charset=<encoding>][;base64],<data>
Dim base64Data As String = src.Substring(src.IndexOf(",") + 1)
Dim imagedata As Byte() = Convert.FromBase64String(base64Data)
Dim image As iTextSharp.text.Image = iTextSharp.text.Image.GetInstance(imagedata)
Dim list As List(Of IElement) = New List(Of IElement)()
Dim htmlPipelineContext As pipeline.html.HtmlPipelineContext = GetHtmlPipelineContext(ctx)
list.Add(GetCssAppliers().Apply(New Chunk(DirectCast(GetCssAppliers().Apply(image, tag, htmlPipelineContext), iTextSharp.text.Image), 0, 0, True), tag, htmlPipelineContext))
Return list
Else
If File.Exists(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, src)) Then
Dim imagedata As Byte() = File.ReadAllBytes(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, src))
Dim image As iTextSharp.text.Image = iTextSharp.text.Image.GetInstance(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, src))
Dim list As List(Of IElement) = New List(Of IElement)()
Dim htmlPipelineContext As pipeline.html.HtmlPipelineContext = GetHtmlPipelineContext(ctx)
list.Add(GetCssAppliers().Apply(New Chunk(DirectCast(GetCssAppliers().Apply(image, tag, htmlPipelineContext), iTextSharp.text.Image), 0, 0, True), tag, htmlPipelineContext))
Return list
End If
Return MyBase.[End](ctx, tag, currentContent)
End If
End Function
End Class

I highly recommend just using AngleSharp to parse the HTML, edit the document if required, and save it again.
There are many posts on here about why trying to parse HTML with regular expressions is a bad idea.
var doc = new HtmlParser().Parse(html);
As you aren't actually changing the HTML content, just fixing up the tags, your should be able to just parse it and save it with no changes to fix the tags.

.NET & Word - How to Convert PlainText to MergeField in Document

i am using Visual Studio .NET (VB)
So if you have a solution in C#, just go here first (http://converter.telerik.com/)
I have a document with text, and an array of words to replace:
I need to replace the plaintext and substitute with actual mergefield
Dim replacements(,) As String =
New String(,) {{"[firstname]", "$Field.FName"},
{"[lastname]", "$Field.LName"},
{"[addr]", "$Field.Addr.St"},
{"[city]", "$Field.City"}}
Dim dotXLoc "c:/test/result.dotx"
Dim Fileformat As Microsoft.Office.Interop.Word.WdSaveFormat = Word.WdSaveFormat.wdFormatXMLTemplate 'SAVE AS DOT
Dim wordApp As Object = New Microsoft.Office.Interop.Word.Application()
Dim currentDoc As Microsoft.Office.Interop.Word.Document = wordApp.Documents.Open(dotXLoc)
' Get bounds of the array.
Dim bound0 As Integer = replacements.GetUpperBound(0)
' Loop over all elements.
For i As Integer = 0 To bound0
' Get element.
Dim FieldFind As String = replacements(i, 0)
Dim FieldReplace As String = replacements(i, 1)
'<<< CODE HERE TO REPLACE TEXT WITH MERGEFIELD >>>
Next
currentDoc.SaveAs(dotXLoc & " v2.dotx", Fileformat)
currentDoc.Close()
wordApp.Quit()

Here is the end result
Public sub main()
Dim rtfLoc = "c:/temp.rtf"
Dim dotXLoc = "c:/temp.dotx"
Dim Fileformat As Microsoft.Office.Interop.Word.WdSaveFormat = Word.WdSaveFormat.wdFormatXMLTemplate
Dim wordApp As Word.Application = New Microsoft.Office.Interop.Word.Application()
Dim currentDoc As Microsoft.Office.Interop.Word.Document = wordApp.Documents.Open(rtfLoc)
TextToMergeField(currentDoc)
currentDoc.SaveAs(dotXLoc, Fileformat)
currentDoc.Close()
wordApp.Quit()
End Sub
we call TextToMergeField(currentDoc) from the main function
this way we can loop through multiple documents and replace all instances
Private Sub TextToMergeField(ByRef currentdoc As Word.Document)
Dim rng As Word.Range
Dim replacements(,) As String =
New String(,) {{"[firstname]", "$Field.FName"},
{"[lastname]", "$Field.LName"},
{"[addr]", "$Field.Addr.St"},
{"[city]", "$Field.City"}}
Dim bound0 As Integer = replacements.GetUpperBound(0)
currentdoc.Activate()
For i As Integer = 0 To bound0
rng = currentdoc.Range
With rng.Find
.Text = replacements(i, 0)
Do While .Execute(Replace:=WdReplace.wdReplaceOne)
currentdoc.Fields.Add(rng, WdFieldType.wdFieldMergeField, replacements(i, 1))
Loop
End With
Next
End Sub
Hope this helps someone

How to: Check if current user is member of ‘domain admins’

I need to verify that a provided username is a Domain Administrator in c#.
Any idea's on how to do this?

You can use WindowsIdentity to get the current user.
Then create a WindowsPrincipal with the WindowsIdentity.
And check WindowsPrincipal.IsInRole(WindowsBuiltInRole.Administrator)
Hope this can help you.
EDIT : I just see the ASP tag now... This link could help you, same thing but for ASP.

Function ADUserInfo(sLogonUser, cOption)
Dim oConnection
Dim oCommand
Dim oRoot
Dim oDomain
Dim sADsPath
Dim sDomain
sDomain = Mid(sLogonUser, 1, Instr(1, sLogonUser, "\") - 1)
Set oConnection = CreateObject("ADODB.Connection")
With oConnection
.Provider = "ADsDSOObject"
.Mode = "1" 'Read
.Properties("Encrypt Password") = True
.Open "Active Directory Provider"
End With
Set oCommand = CreateObject("ADODB.Command")
oCommand.ActiveConnection = oConnection
Set oRoot = GetObject("LDAP://" & sDomain & "/rootdse")
Set oDomain = GetObject("LDAP://" & sDomain & "/" & oRoot.Get("defaultNamingContext"))
sADsPath = "<" & oDomain.ADsPath & ">"
Select Case lcase(cOption)
Case "groups"
ADUserInfo = ADUserGroups(sLogonUser, oConnection, oCommand, oRoot, oDomain, sADsPath)
Case "name"
ADUserInfo = ADUserName(sLogonUser, oConnection, oCommand, oRoot, oDomain, sADsPath)
Case "supervisor"
End Select
End Function
Function ADUserGroups(sLogonUser, oConnection, oCommand, oRoot, oDomain, sADsPath)
Dim sFilter
Dim sAttribsToReturn
Dim sDepth
Dim sDomainSID
Dim vObjectSID
Dim sObjectSID
Dim sGroupRID
Dim iPrimaryGroupID
Dim oPrimaryGroup
Dim oRS
Dim value
Dim cGroups
Dim sDomain
Dim sLogonName
sDomain = Mid(sLogonUser, 1, Instr(1, sLogonUser, "\") - 1)
sLogonName = Mid(sLogonUser, Instr(1, sLogonUser, "\") + 1)
sFilter = "(&(objectCategory=Person)(objectClass=user)(sAMAccountName=" & sLogonName & "))"
sAttribsToReturn = "memberOf,primaryGroupID,objectSID"
sDepth = "subTree"
ocommand.CommandText = sADsPath & ";" & sFilter & ";" & sAttribsToReturn & ";" & sDepth
Set oRS = ocommand.Execute
' Only one user should meet the criteria
If (oRS.RecordCount = 1) Then
' Get that user's info
For i = 0 To oRS.Fields.Count - 1
If (oRS.Fields(i).Name = "memberOf") Then
' I've never seen this field come back with more than
' ONE value, but the original code I started with
' treated the memberOf property as though it was a
' collection. So, I've left it a collection until
' I can verify it. KLW
cGroups = ""
For Each value In oRS.Fields(i).Value
cGroups = cGroups & replace(split(value,",")(0),"CN=","") & ";"
Next
ElseIf (oRS.Fields(i).Name = "primaryGroupID") Then
' need this to get the PrimaryGroup after other group membership has been obtained
' (Primary Group ID and Object SID ID needed to get the primary group)
iPrimaryGroupID = oRS.Fields(i).Value
ElseIf (oRS.Fields(i).Name = "objectSID") Then
' adVarBinary -- need this to get the PrimaryGroup.
' It is not included in the memberOf group list
vObjectSID = oRS.Fields(i).Value
sObjectSID = SDDL_SID(vObjectSID)
End If
Next
' The primary group is not included in memberOf...
' We have the SDDL form of the user's SID.
' Remove the user's RID ( the last sub authority)
' up to the "-"
'
sDomainSID = Mid(sObjectSID, 1, (InStrREV(sObjectSID,"-")))
' Build the SID of the Primary group
' from the domainSID and the Primary Group RID in
' the PrimaryGroupID.
'
sGroupRID = StrRID(iPrimaryGroupID)
sDomainSID = sDomainSID & sGroupRID
' Get the primary group
'
set oPrimaryGroup = GetObject("LDAP://" & sDomain & "/<SID=" & sDomainSID & ">")
cGroups = replace(split(oPrimaryGroup.Get("DistinguishedName"),",")(0),"CN=","") & ";" & cGroups
ADUserGroups = cGroups
End If
End Function
Function ADUserName(sLogonUser, oConnection, oCommand, oRoot, oDomain, sADsPath)
Dim sFilter
Dim sAttribsToReturn
Dim sDepth
Dim sDomainSID
Dim vObjectSID
Dim sObjectSID
Dim sGroupRID
Dim iPrimaryGroupID
Dim oPrimaryGroup
Dim oRS
Dim value
Dim sDomain
Dim sLogonName
sDomain = Mid(sLogonUser, 1, Instr(1, sLogonUser, "\") - 1)
sLogonName = Mid(sLogonUser, Instr(1, sLogonUser, "\") + 1)
sFilter = "(&(objectCategory=Person)(objectClass=user)(sAMAccountName=" & sLogonName & "))"
sAttribsToReturn = "distinguishedName"
sDepth = "subTree"
ocommand.CommandText = sADsPath & ";" & sFilter & ";" & sAttribsToReturn & ";" & sDepth
Set oRS = ocommand.Execute
' Only one user should meet the criteria
If (oRS.RecordCount = 1) Then
' Get that user's info
For i = 0 To oRS.Fields.Count - 1
If (oRS.Fields(i).Name = "distinguishedName") Then
ADUserName = replace(split(oRS.Fields(i).Value,",")(0),"CN=","")
End If
Next
End If
End Function
function SDDL_SID ( oSID )
dim IssueAuthorities(11)
Dim SubAuthorities
Dim strSDDL
Dim IssueIndex
Dim Revision
Dim i, j, k, index, p2, subtotal, dblSubAuth
IssueAuthorities(0) = "-0-0"
IssueAuthorities(1) = "-1-0"
IssueAuthorities(2) = "-2-0"
IssueAuthorities(3) = "-3-0"
IssueAuthorities(4) = "-4"
IssueAuthorities(5) = "-5"
IssueAuthorities(6) = "-?"
IssueAuthorities(7) = "-?"
IssueAuthorities(8) = "-?"
IssueAuthorities(9) = "-?"
' First byte is the revision value
'
Revision = ascb(midB(osid,1,1))
' Second byte is the number of sub authorities in the
' SID
'
SubAuthorities = CInt(ascb(midb(oSID,2,1)))
strSDDL = "S-" & Revision
IssueIndex = CInt(ascb(midb(oSID,8,1)))
strSDDL = strSDDL & IssueAuthorities(IssueIndex)
index = 9
i = index
for k = 1 to SubAuthorities
p2 = 0
subtotal = 0
for j = 1 to 4
dblSubAuth = CDbl(ascb(midb(osid,i,1))) * (2^p2)
subTotal = subTotal + dblSubAuth
p2 = p2 + 8
i = i + 1
next
' Convert the value to a string, add it to the SDDL Sid and continue
'
strSDDL = strSDDL & "-" & cstr(subTotal)
next
SDDL_SID = strSDDL
end function
function Get_HexString( oSID )
Dim outStr, i, b
outStr = ""
for i = 0 to Ubound(oSid)
b = hex(ascb(midb(oSid,i+1,1)))
if( len(b) = 1 ) then b = "0" & b
outStr = outStr & b
next
Get_HexString = outStr
end function
function StrRID( inVal )
dim dLocal
if( (inVal and &H80000000) <> 0 ) then
dLocal = CDbl((inval and &H7FFFFFFF))
dLocal = dLocal + 2^31
StrRID = cstr(dLocal)
else
StrRID = Cstr(inVal)
end if
end function

how can I give the data source for OLEDB during the run time

I have an excel template file saved in web server folder.
During the run time I am giving the data source using the variable(dunsno) and date
but it throws an error:
Format of the initialization string does not conform to specification starting at index 3.
I just want to know how to write the connection string in the server side
I have done this:
protected void Button1_Click(object sender, EventArgs e)
{
string connStr = "provider=Microsoft.Jet.OLEDB.4.0;Data Source='Server.MapPath(~/Profile/ + "Tempfile" + dunsno + DateTime.Today.ToString("dd.MM.yyyy") + ".xls");Extended Properties=Excel 8.0;";
DirectoryInfo directoryInfo = new DirectoryInfo(Server.MapPath("~/temp/"));
var fileList = directoryInfo.GetFiles();
string newFileName = Server.MapPath("~/Profile/" + "Tempfile" + dunsno + DateTime.Today.ToString("dd.MM.yyyy") + ".xls");
foreach (FileInfo fleInfo in fileList)
{
fleInfo.CopyTo(newFileName, true);
}
OleDbConnection MyConnection;
OleDbCommand MyCommand = new OleDbCommand();
MyConnection = new OleDbConnection(connStr);
MyConnection.Open();
MyCommand.Connection = MyConnection;
string sql = "Insert into [Sheet1$] (id,name) values('3','c')";
MyCommand.CommandText = sql;
MyCommand.ExecuteNonQuery();
MyConnection.Close();
}
Some more VBA point to have this clarity :
Sub GrabLastNames()
'dimension (set aside memory for) our variables
Dim objIE As InternetExplorer
Dim ele As HTMLLinkElement
Dim e As HTMLLinkElement
Dim h As HTMLLinkElement
Dim t As HTMLTable
Dim s As String
Dim x, y, z
Dim c As Integer
Dim post As Object, Elem As Object
Set objIE = New InternetExplorer
objIE.Visible = True
i = 0
objIE.Navigate "http://apps.who.int/immunization_monitoring/globalsummary/countries?countrycriteria%5Bcountry%5D%5B%5D=ALB&commit=OK"
Do While objIE.Busy = True Or objIE.ReadyState <> 4: DoEvents: Loop
Set post = objIE.Document.getElementById("countrycriteria_country")
For Each Elem In post.getElementsByTagName("option")
c = c + 1
If c = 6 Then Exit For
Elem.Selected = True
objIE.Document.getElementById("countrycriteria_country").Focus
objIE.Document.getElementById("countrycriteria_country").FireEvent ("onchange")
Do While objIE.Busy = True Or objIE.ReadyState <> 4: DoEvents: Loop
For Each ele In objIE.Document.getElementsByTagName("table") '.getElementById("myTable").getElementsByTagName("tr")
s = LCase(Trim(ele.innerText))
If InStr(s, "immunization schedule") Or InStr(s, "percentage target population vaccinated by antigen") Then
For Each e In ele.Rows
i = i + 1
j = 3
' Sheet1.Cells(i, 1).Value = Elem.Value
For Each h In e.Cells
j = j + 1
Sheet1.Cells(i, j).Value = h.innerText
Next h
Next e
End If
Next ele
Next Elem
ActiveWorkbook.Save
End Sub
Sub Select_Item()
Dim post As Object, Elem As Object
With CreateObject("InternetExplorer.Application")
.Visible = True
.Navigate "http://apps.who.int/immunization_monitoring/globalsummary/countries?countrycriteria%5Bcountry%5D%5B%5D=ALB&commit=OK" ''stored the html elements within "element.html" file to test it locally
While .Busy = True Or .ReadyState < 4: DoEvents: Wend
Set post = .Document.getElementById("countrycriteria_country")
For Each Elem In post.getElementsByTagName("option")
If Elem.Value = "BHS" Then Elem.Selected = True: Exit For
' i = i + 1
' If i = 4 Then Exit For
Next Elem
Application.Wait (Now + TimeValue("0:00:02"))
.Document.getElementById("countrycriteria_country").Focus
Application.Wait (Now + TimeValue("0:00:02"))
'.Document.getElementById("countrycriteria_country").Change
.Document.getElementById("countrycriteria_country").FireEvent ("onchange")
End With
End Sub
' Loop vba========
' Elem.Selected = True
' objIE.Document.getElementById("countrycriteria_country").Focus
' objIE.Document.getElementById("countrycriteria_country").FireEvent ("onchange")
' Do While objIE.Busy = True Or objIE.ReadyState <> 4: DoEvents: Loop
Sub getCoverage()
Application.ScreenUpdating = False
Sheet1.Cells.Clear
'dimension (set aside memory for) our variables
Dim objIE As InternetExplorer
Dim ele As HTMLLinkElement
Dim e As HTMLLinkElement
Dim h As HTMLLinkElement
Dim t As HTMLTable
Dim s As String
Dim x, y, z
Dim con(1000)
Dim c As Integer
Dim post As Object, Elem As Object
Dim s1 As String, s2 As String, s3 As String, s4 As String
Set objIE = New InternetExplorer
objIE.Visible = True
' Do While objIE.Busy = True Or objIE.ReadyState <> 4: DoEvents: Loop
s1 = LCase(shtweb.Range("d5").Value)
s2 = LCase(shtweb.Range("e5").Value)
s3 = LCase(shtweb.Range("f5").Value)
s4 = LCase(shtweb.Range("g5").Value)
s2 = IIf(s2 = "", "fsdfswew", s2)
s3 = IIf(s3 = "", "fsdfswew", s3)
s4 = IIf(s4 = "", "fsdfswew", s4)
i = 0
objIE.Navigate "http://apps.who.int/immunization_monitoring/globalsummary/countries?countrycriteria%5Bcountry%5D%5B%5D=ALB&commit=OK"
Do While objIE.Busy = True Or objIE.ReadyState <> 4: DoEvents: Loop
Set post = objIE.Document.getElementById("countrycriteria_country")
For Each Elem In post.getElementsByTagName("option")
con(c) = Elem.Value
c = c + 1
Next Elem
'objIE.
For k = 0 To c
If con(k) = "" Then Exit For
objIE.Navigate "http://apps.who.int/immunization_monitoring/globalsummary/countries?countrycriteria%5Bcountry%5D%5B%5D=" & con(k) & "&commit=OK"
Do While objIE.Busy = True Or objIE.ReadyState <> 4: DoEvents: Loop
For Each ele In objIE.Document.getElementsByTagName("table") '.getElementById("myTable").getElementsByTagName("tr")
s = LCase(Trim(ele.innerText))
If InStr(s, s1) Or InStr(s, s2) Or InStr(s, s3) Or InStr(s, s4) Then
For Each e In ele.Rows
i = i + 1
j = 3
Sheet1.Cells(i, 1).Value = con(k)
For Each h In e.Cells
j = j + 1
If Left(h.innerText, 1) = "=" Then
Sheet1.Cells(i, j).Value = "'" & h.innerText
Else
Sheet1.Cells(i, j).Value = h.innerText
End If
Next h
Next e
End If
Next ele
Next k
ActiveWorkbook.Save
Application.ScreenUpdating = True
End Sub

use Path.Combine and a OleDbConnectionStringBuilder to create a valid connection-string:
var conString = string.Format("Provider=Microsoft.Jet.OLEDB.4.0; Data Source={0}"
, Path.Combine(dir, "nik.mdb"));
var conBuilder = new OleDbConnectionStringBuilder(conString);
using (var con = new OleDbConnection(conBuilder.ConnectionString))
{
// ...
}
Maybe you have white-spaces in the connection string.

Why does DirectoryEntry("WinNT://") not show group everyone?

The below function (is supposed to) lists all groups on the local machine.
Now the question: Why does the "everyone" group not show up ?
If I change directory permissions as user, I see the "everyone" group, so it must be there, somewhere.
Public Shared Function GetAllGroups() As DataTable
Return GetAllGroups(System.Environment.MachineName)
End Function
' Tools.Permissions.Local.GetAllGroups() '
Public Shared Function GetAllGroups(ByVal strDomain As String) As DataTable
Dim dt As New DataTable
Dim dr As DataRow = Nothing
Try
Dim bException As Boolean = False
Dim deLocalMachine As System.DirectoryServices.DirectoryEntry = New System.DirectoryServices.DirectoryEntry("WinNT://" + strDomain)
'Dim deRootObject As System.DirectoryServices.DirectoryEntry = GetDirectoryEntry(strPath, strUserName, strPassword, bException) '
If bException Then
Return Nothing
End If
For Each child As System.DirectoryServices.DirectoryEntry In deLocalMachine.Children
Try
If StringComparer.OrdinalIgnoreCase.Equals(child.SchemaClassName, "group") Then
If Not dt.Columns.Contains("Members") Then
dt.Columns.Add("Members", GetType(System.String))
End If
For Each strPropertyName As String In child.Properties.PropertyNames
If Not dt.Columns.Contains(strPropertyName) Then
dt.Columns.Add(strPropertyName, GetType(System.String))
End If
Next strPropertyName
dr = dt.NewRow
Dim strMembers As String = ""
For Each member As Object In DirectCast(child.Invoke("Members"), IEnumerable)
Using memberEntry As New System.DirectoryServices.DirectoryEntry(member)
Try
strMembers += memberEntry.Properties("Name").Value.ToString() + Environment.NewLine
Console.WriteLine(memberEntry.Path)
Catch exFixMeIsNotNullNotWorking As Exception
End Try
End Using
Next
dr("Members") = strMembers
For Each strPropertyName As String In child.Properties.PropertyNames
If StringComparer.OrdinalIgnoreCase.Equals(strPropertyName, "objectSid") Then
Dim strSID As String = ""
Try
Dim sidThisSid As New System.Security.Principal.SecurityIdentifier(child.Properties(strPropertyName).Value, 0)
strSID = sidThisSid.ToString()
' http://stackoverflow.com/questions/1040623/convert-a-username-to-a-sid-string-in-c-net '
' NTAccount ntAccount = (NTAccount)sid.Translate( typeof( NTAccount ) ); '
' Dim ntAccount As Security.Principal.NTAccount = CType(sidThisSid.Translate(GetType(Security.Principal.NTAccount)), Security.Principal.NTAccount) '
Catch ex As Exception
End Try
dr(strPropertyName) = strSID
Else
dr(strPropertyName) = child.Properties(strPropertyName).Value.ToString()
End If
Next strPropertyName
dt.Rows.Add(dr)
End If
Catch ex As Exception ' Don't finish just because one fails
Console.WriteLine(ex.Message.ToString & vbLf & vbLf & ex.StackTrace.ToString, MsgBoxStyle.Critical, "FEHLER ...")
End Try
Next
Catch ex As Exception
Console.WriteLine(ex.Message.ToString & vbLf & vbLf & ex.StackTrace.ToString, MsgBoxStyle.Critical, "FEHLER ...")
End Try
Return dt
End Function ' ListEverything

The Everyone group isn't a standard group but rather an implicit group or built-in principal. If you open your local "Users and Groups" you won't see it listed there either. The same is true of other "groups" such as Authenticated Users. If you want to access these you need to use the System.Security.Principal.WellKnownSidType enumeration. This Windows 2008 article is really relevant for older versions of Windows, too.