Client Side Web Development

Re: Parsing HTML source client side.

NC01 — Mon, 13 Oct 2008 12:55:40 GMT

There is no way to read data from an already opened window. The only way for the POST method to work would be for the billing window to do a submit to the new window, which it does not sound like that you can do. I would suggest just reading the information needed from the same database that the billing window uses.

NC...

Re: Parsing HTML source client side.

macmaster9600 — Sun, 12 Oct 2008 15:55:55 GMT

ok so, to give you a better idea on what i am trying to do. My IT department manages our billing department, they wont let me make changes to that application at all, however my department needs a tool they can use to research some details about the customers address. So I can make the people of my department manually type in the address into the research tool, but they have to have the billing system open at all times anyway. So the idea is to just have a button on the research tool pull the details from the proper fields that hold the address data. This would speed the process, cut down on errors, and reduce strain on the employees because it will reduce keystroks enterd every day. That is the general idea.

I like the post option. However i cant add any script to the billing window so I have to pull the data directly. I think that post option will work with some modifications. I will make the modifications and post it here so i can get some feed back.

Thanks for all your help.

Re: Parsing HTML source client side.

NC01 — Sun, 12 Oct 2008 11:18:30 GMT

First of all, you might try a Google search on some of those topics. Google is your best friend as a developer.

I still do not know what you are trying to do, but I will try to answer some of your questions.

To use a QueryString and Redirect:

Window #1 CodeBehind:
protected void nextWindowButton_Click(object sender, System.EventArgs e)
{
string firstValueToSend = TextBox1.Text;
string secondValueToSend = TextBox2.Text;
string thirdValueToSend = TextBox3.Text;

string windowUrl = "Page2.aspx";
string queryString = string.Format("?value1={0}&value2={1}&value3={2}", firstValueToSend, secondValueToSend, thirdValueToSend);
this.Response.Redirect(windowUrl + queryString);
}

Window #2 CodeBehind:
private void Page_Load(object sender, System.EventArgs e)
{
string firstValueSent = Request["value1"];
string secondValueSent = Request["value2"];
string thirdValueSent = Request["value3"];
}

To use a POST:

Window #1 aspx file:
<script type="text/javascript">
<!--
function postToPayPal()
{
var formElementsArray = document.getElementsByTagName('FORM');

if ( formElementsArray != null )
{
var formElement = formElementsArray[0];

  document.getElementById('__EVENTTARGET').value = ' ';
  document.getElementById('__EVENTARGUMENT').value = ' ';
  document.getElementById('__VIEWSTATE').name = 'NOVIEWSTATE';

  var formAction = 'Page2.aspx';
  formElement.action = formAction;
  formElement.submit();
}
// -->
</script>

Window #2 CodeBehind:
private void Page_Load(object sender, System.EventArgs e)
{
string firstValueSent = Request["TextBox1"];
string secondValueSent = Request["TextBox2"];
string thirdValueSent = Request["TextBox3"];
}

To use an iFrame:

The problem with an iFrame is that you are not easily going to be able to access the controls on the page in the iFrame, especially server-side.

NC...

Re: Parsing HTML source client side.

macmaster9600 — Sat, 11 Oct 2008 14:38:53 GMT

Currently window 1 does not open window 2. However if it will make this work i can have them change the process and I can change the script. I usually use a Redirect, but i will look at doing a post insted. I have not done that yet so i will have to find out exactly how to do that. Please explain more how to use the queryString function. I am failry new to ASP, most of my code is using windows forms and vb.net or vbscript. What about, i know it is old school and not best practice now, but doing a frame. So window 1 will physically contain window 2. The controls that come with visual studio do not make it easy but i am sure i can figure it out.

Re: Parsing HTML source client side.

NC01 — Sat, 11 Oct 2008 10:44:19 GMT

Is window #1 opening window #2 and how is it opening it? Using window.open or Response.Redirect or a POST? If using POST you can use Request["control-ID"] to get the posted values this will also work with a QueryString from the opener window.

Please post more particulars as to exactly what you are doing. You can't really read the HTML from one window to another since the web is a disconnected architecture.

NC...

Re: Parsing HTML source client side.

macmaster9600 — Fri, 10 Oct 2008 23:25:45 GMT

Basicly the issue is that i need to be able to pull the HTML source from a diferent IE window. Once i have it i can parse it. But i cant find a way to pull the HTML source from anything other than the active window. so basicly i have window 1 (the research application) and window 2 (the billing window) and i need to have window 1 pull the SOURCE or pull data from the fields of window 2. If i pull the source i can parse it out. If i populate using the fields i wont have to parse at all. I dont care what language it is in. As long as it works.

Re: Parsing HTML source client side.

TATWORTH — Mon, 15 Sep 2008 11:31:05 GMT

>We do this all the time in vb.net and it works great. However as we move this tool over to ASP.net we need to have the same functionality.

Do you mean VBSCRIPT or VB.NET? They are not the same language!

Re: Parsing HTML source client side.

NC01 — Mon, 15 Sep 2008 11:14:28 GMT

It would take me a week to look through and debug all of that code, and, sorry, I just don't have that much time to allot to one post. Have you even tried running this code in VB.NET/ASP.NET?

NC...

Re: Parsing HTML source client side.

macmaster9600 — Sun, 14 Sep 2008 14:05:24 GMT

Private Sub CAPTToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CAPTToolStripMenuItem.Click On Error GoTo err_handler

Dim FName As String = ""

Dim LName As String = ""

Dim SASN, City2, LV1A, LV1B, LV1C, strLECCompany, strPon As String

'sets string so ticket form will auto grab from capt as well

strgrab = "CAPT"

Call CheckIE("http://capt.corp.coperate.com/Default.aspx", "CAPT") strHTMLCaptTable = ParseBy3variable(strHTMLSource, "this.src='Images/

strgrab = "CAPT"

Call CheckIE("http://capt.corp.coperate.com/Default.aspx", "CAPT")<>, "<TABLE class=OrderTable", "</TABLE>") ' Get Text Between the Table to find Due Date

parseCTLnumber(objiedoc)

ParseName(ParseBy2variable(strHTMLSource, "_lblEUName>", "</SPAN>"), FName, LName) ' Split up Name

'FirstName.Text = StrConv(strFirstName, VbStrConv.ProperCase) ' First Name

'LastName.Text = StrConv(strLastName, VbStrConv.ProperCase) ' Last Name

txtHSN.Text = ParseBy3variable(strHTMLSource, "_txtSANO", "value=", " name=") ' Street Number

'txtDir.Text = ParseBy3variable(strHTMLSource, "_txtSASD", "value=", " name=") ' Street Direction

SASN = ParseBy3variable(strHTMLSource, "_txtSASN", "value=", " name=") ' Street Name

txtSNM.Text = StrConv(Replace(SASN, Chr(34), ""), VbStrConv.ProperCase) ' Take "" out of Street name if space

'txtType.Text = StrConv(ParseBy3variable(strHTMLSource, "_txtSATH", "value=", " name="), VbStrConv.ProperCase) ' Street Type

City2 = ParseBy3variable(strHTMLSource, "_txtCITY2", "value=", " name=") ' City

cmbCity.Text = StrConv(Replace(City2, Chr(34), ""), VbStrConv.ProperCase) 'Take "" out of City name if space

txtStateSearch.Text = ParseBy3variable(strHTMLSource, "_txtSTATE2", "value=", " name=") ' State

txtZIP.Text = ParseBy3variable(strHTMLSource, "_txtZipCode2", "value=", " name=") ' Zip

LV1A = ParseBy3variable(strHTMLSource, "_txtLV1A", "value=", " name=") ' get all levels

LV1B = ParseBy3variable(strHTMLSource, "_txtLV2A", "value=", " name=") ' get all levels

LV1C = ParseBy3variable(strHTMLSource, "_txtLV3A", "value=", " name=") ' get all levels

'Level.Text = LV1A + LV1B + LV1C ' Put all Levels Together

'LRN.Text = ParseBy3variable(strHTMLSource, "_txtLRN", "value=", " name=")

strLECCompany = ParseBy3variable(strHTMLSource, "_txtCarrier", "value=", " name=")

'LECCompany.Text = Replace(strLECCompany, Chr(34), "")

'If Level.Text = "0" Then ' Make sure level dont = 0 if so removes 0

' Level.Text = ""

'End If

strPon = ParseBy3variable(strHTMLCaptTable, "ponver", ",", "</A>") ' Grab Pon

strPon = Split(strPon, "-")(0) ' split up pon and ver

'txtODRPon.Text = strPon

txtTN.Text = ParseBy2variable(strHTMLCaptTable, "_lblatn>", "</SPAN>") ' Grab TN from table

If txtTN.Text = "" Then ' if pon comes back empty no order open in capt

MsgBox("You do not have an order open.", MsgBoxStyle.SystemModal)

Exit Sub

End If

If btnSearch.Enabled = True Then btnSearch_Click(sender, e)

Exit Sub

err_handler:

If Err.Number = 91 Then

MsgBox("You do not have an order open. Please open an order and try again.", MsgBoxStyle.Critical, "No order open")

Else

MsgBox(Err.Number & Err.Description & Err.Erl)

End If

End Sub

Public Sub ParseName(ByVal strFullName As String, ByVal FName As String, ByVal LName As String)

Dim P As Integer

Dim strCutName As String

Dim strReminderOfName As String

strFirstName = ""

strLastName = ""

P = InStr(strFullName, ",")

If P > 0 Then

Dim I As Integer

strFullName = Trim$(strFullName)

P = 1

For I = Len(strFullName) To 1 Step -1

If Mid$(strFullName, I, 1) = "," Then

P = I + 1

Exit For

End If

Next I

If P = 1 Then

strCutName = strFullName

strReminderOfName = ""

Else

strCutName = Mid$(strFullName, P)

strReminderOfName = Trim$(Left$(strFullName, P - 1))

End If

strFirstName = strCutName '(First Name)

strLastName = strReminderOfName '(Last Name)

strLastName = StrConv(Replace(strLastName, ",", ""), VbStrConv.ProperCase) ' (Take out ,)

strFirstName = Trim(strFirstName) '(Remove Spaces)

strLastName = Trim(strLastName) ' (Remove Spaces)

Else

Dim I As Integer

strFullName = Trim$(strFullName)

P = 1

For I = Len(strFullName) To 1 Step -1

If Mid$(strFullName, I, 1) = " " Then

P = I + 1

Exit For

End If

Next I

If P = 1 Then

strCutName = strFullName

strReminderOfName = ""

Else

strCutName = Mid$(strFullName, P)

strReminderOfName = Trim$(Left$(strFullName, P - 1))

End If

strLastName = strCutName 'Last Name)

strFirstName = strReminderOfName 'First Name

End If

End Sub

Function ParseBy3variable(ByVal strHTML As String, ByVal DelimiterA As String, ByVal DelimiterB As String, ByVal DelimiterC As String)

ParseBy3variable = ""

Dim A, B, D As Integer

Dim C As String

A = 1

While InStr(A, strHTML, DelimiterA) > 0

A = InStr(A, strHTML, DelimiterA) + Len(DelimiterA)

B = InStr(A, strHTML, DelimiterC)

C = Microsoft.VisualBasic.Mid(strHTML, A, B - A)

D = InStr(1, C, DelimiterB)

If D = 0 Then

Exit Function

End If

ParseBy3variable = Microsoft.VisualBasic.Mid(C, D + 6)

End While

End Function

Function ParseBy2variable(ByVal strHTML As String, ByVal DelimiterA1 As String, ByVal DelimiterB1 As String)

ParseBy2variable = ""

Dim A As Integer, B As Integer

A = 1

While InStr(A, strHTML, DelimiterA1) > 0

A = InStr(A, strHTML, DelimiterA1) + Len(DelimiterA1)

B = InStr(A, strHTML, DelimiterB1)

ParseBy2variable = Microsoft.VisualBasic.Mid(strHTML, A, B - A)

End While

End Function

Public Sub CheckIE(ByVal URLa, ByVal URLname)

Dim objSW As SHDocVw.ShellWindows

Dim objIE As SHDocVw.InternetExplorer

Dim objDoc As Object

Dim bAppRunning As Boolean

objSW = New SHDocVw.ShellWindows

If objSW.Count Then ' new

For Each objDoc In objSW

If InStr(1, objDoc.LocationName, URLname) Then

bAppRunning = True

objDoc.Visible = True

objDoc.StatusBar = 1

Dim i As Integer

i = 1

While objDoc.Busy : End While : While objDoc.ReadyState <> 4 : End While

strHTMLSource = objDoc.Document.getElementsByTagName("html")(0).outerHTMLGetDLtable(objDoc.Document, "LTY*")

objiedoc = objDoc

Exit For

End If

Next objDoc

End If

If bAppRunning = False Then

objIE = CreateObject("InternetExplorer.Application") ' new

objIE.Visible = True

objIE.Navigate(URLa)

objIE.StatusBar = 1

Dim i As Int16 = 1

While objIE.Busy : End While : While objIE.ReadyState <> 4 : End While

strHTMLSource = objIE.Document.getElementsByTagName("html")(0).outerHTMLEnd If

objIE = Nothing

objSW = Nothing

objDoc = Nothing

End Sub

Public Sub GetDLtable(ByVal IE As Object, ByVal TableSearch As String)

Dim varTables As Object

Dim varRows As Object

Dim lngRow As Object

Dim varCells As Object

Dim lngColumn As Long

varTables = IE.All.tags("TABLE") For Each varTable In varTables

'Use the innerText to see if this is the table we want.

If varTable.innerText Like TableSearch Then

varRows = varTable.Rows

lngRow = 2 'This will be the first output row

For Each varRow In varRows

varCells = varRow.Cells

lngColumn = 1 'This will be the output column

For Each varCell In varCells

strTableText(lngColumn - 1) = varCell.innerText

lngColumn = lngColumn + 1

Next varCell

lngRow = lngRow + 1

Next varRow

End If

Next varTable

End Sub

Function parsebycombobox(ByVal ie As Object, ByVal controlname As String)

parsebycombobox = ""

Dim strby2 As String = ""

Dim theElementCollection = ie.Document.GetElementsByTagName("SELECT") For Each curElement In theElementCollection

If Microsoft.VisualBasic.Right(curElement.GetAttribute("Name"), controlname.Length) = controlname Then

Dim strby3 As String = ie.Document.getElementByid(curElement.name).value()

'MsgBox(ParseBy2variable(curElement.name, "gridOrder:_", ":"))

strby2 = ParseBy2variable(strHTMLSource, strby3 & " selected>", "</OPTION>")

End If

parsebycombobox = strby2

End Function

Public Sub parseCTLnumber(ByVal ie As Object)

strCTLnumber = ""

Dim theElementCollection = ie.Document.GetElementsByTagName("SELECT") For Each curElement In theElementCollection

'we look for the ddlcounty only because that is one control that is only visible when an order is open.

'any other control that is visible only when a control is open will work as well.

'the "9" value is the length of the ddlcounty string

If Microsoft.VisualBasic.Right(curElement.GetAttribute("Name"), 9) = "ddlCounty" Then

strCTLnumber = ParseBy2variable(curElement.name, "gridOrder:_", ":")

'MsgBox(strCTLnumber)

End If

End Sub

Public Function FindWindowByLocationURL(ByVal LocationURL As String) As SHDocVw.InternetExplorer

FindWindowByLocationURL = New SHDocVw.InternetExplorer

Dim objSW As New SHDocVw.ShellWindows

Dim timer As Date

blnwindowfound = False

If objSW.Count Then

For Each objIE In objSW

If InStr(1, objIE.LocationURL, LocationURL) Then

blnwindowfound = True

objIE.StatusBar = 1

objIE.Visible = True

WaitAgain:

timer = Now

While objIE.Busy

If DateDiff(DateInterval.Second, Now, timer, FirstDayOfWeek.Monday, FirstWeekOfYear.Jan1) > 10 Then

objIE.Refresh()

GoTo WaitAgain

End If

Application.DoEvents()

End While

timer = Now

While objIE.ReadyState <> 4

If DateDiff(DateInterval.Second, Now, timer, FirstDayOfWeek.Monday, FirstWeekOfYear.Jan1) > 10 Then

objIE.Refresh()

GoTo WaitAgain

End If

Application.DoEvents()

End While

FindWindowByLocationURL = objIE

Exit For

End If

If objIE.LocationURL = "" Then objIE.Quit() Next objIE

End If

If blnwindowfound = False Then

FindWindowByLocationURL = CreateObject("InternetExplorer.Application")

FindWindowByLocationURL.StatusBar = 1

FindWindowByLocationURL.Visible = True

End If

SetForegroundWindow(FindWindowByLocationURL.HWND)

End Function

Re: Parsing HTML source client side.

NC01 — Sun, 14 Sep 2008 11:47:51 GMT

What is the difference in using ASP.NET over classic ASP? You can still do the same things except that ASP.NET has a lot more functionality added.

NC...

Re: Parsing HTML source client side.

ankit.sri — Sun, 14 Sep 2008 06:15:50 GMT

lets see the vb.net script

Parsing HTML source client side.

macmaster9600 — Sun, 14 Sep 2008 01:15:15 GMT

ok so here is my issue. We have a billing platform. and a research tool. THey are both web based I am working on the research tool. So i want to have a client side script, java, dhtml, whatever that will first look for the billing site( that is open in IE6) and parse out the data so I can pull the address data out. We do this all the time in vb.net and it works great. However as we move this tool over to ASP.net we need to have the same functionality. The user will have to have the acitive order open on the billing system and initiate the pull on the research tool. I can provide the vb.net script we use to pull and parse out the data, if it would help. but i havent been able to find anything that would let this happen on a web interface. Please help.