I am still pretty new to Visual basic, but have been working to write a program for Excel that will interact with a Javascript based website and extract data from this website. The site is not mine but I have approval to extract the data I need. The problem that I'm running into is that the site contains 3 option boxes. As each box is selected the next boxes are populated with new data. Thus when I first have the program go to the site and view the code the data there is not the same after the first option is seleted. When I actually go to the site and make the seletction the source code changes, but when I make the seletction via the Visual basic code, what's shown on the screen changes but the source code for the page remains the same. I'm guessing that this has somethign to do with the postback feature of the webpage but I'm not postive if this is the case or if this is really the problem. Below i've listed both my code along with samples from the website that I'm hoping someone can point me in the right direction. Please keep in mind that I'm unable to make changes to the website. Thanks.
Sub Data_record()
Dim theItm As HTMLFormElement
URL = "http://WWw.anywebsite.com/webpage.aspx"
Set myIE = New InternetExplorer
With myIE
.Navigate URL
.Visible = True
Do While .Busy: DoEvents: Loop
Do While .ReadyState <> 4: DoEvents: Loop
End With
Set myIEdoc = myIE.document
Set theForm = findFm(myIEdoc, "ddModel")
With theForm
For i = 0 To .Length - 1
Select Case .Item(i).Name
Case "ddModel"
.Item(i).Value = "46"
Case Else
End Select
Next
End With
With myIE 'Wait while any changes to the above seletion become availble to be seen.
Do While .Busy: DoEvents: Loop
Do While .ReadyState <> 4: DoEvents: Loop
End With
Set myIEdoc = myIE.document 'Ensure that myIEdoc has the latest website version.
Cells(1, 1) = myIEdoc.body.innerHTML 'This should have the source code showing the update in item ddModel to value 46.
End Sub
Function findFm(theDoc As HTMLDocument, theType As String) As HTMLFormElement
Dim i As Integer, j As Integer
Dim theItm As HTMLFormElement
With theDoc.forms
For i = 0 To .Length - 1
Set theItm = .Item(i)
With theItm
For j = 0 To .Length - 1
Testing1 = .Item(j).Name
If .Item(j).Name = theType Then
Set findFm = theItm
If theType = "btnSearch" Then 'used to submit final request
.Item(j).Click
End If
Exit Function
End If
Next
End With
Next
End With
End Function<script type='text/javascript'>alert('Please enter a search criteria');</script>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>View / Search Site</title>
<LINK href="styles.css" rel="stylesheet">
<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
<meta content="Visual Basic .NET 7.1" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
<script language="JavaScript" src="spell.js" type="text/javascript"></script>
<SCRIPT language="javascript" id="clientEventHandlersJS">
//===============================================
//Called whenever a key is pressed and tbSearch has focus
function clickButton(e, buttonid)
{
var evt = e ? e : window.event;
var bt = document.getElementById(buttonid);
if (bt)
{
if (evt.keyCode == 13)
{
bt.click();
return false;
}
}
}
//===============================================
</SCRIPT>
</HEAD>
<body>
<form name="Form1" method="post" action="webpage.aspx" id="Form1">
<input type="hidden" name="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" value="" />
<input type="hidden" name="__VIEWSTATE" value="Bunch of cryptic letters here" />
<script language="javascript" type="text/javascript">
<!--
function __doPostBack(eventTarget, eventArgument) {
var theform;
if (window.navigator.appName.toLowerCase().indexOf("microsoft") > -1) {
theform = document.Form1;
}
else {
theform = document.forms["Form1"];
}
theform.__EVENTTARGET.value = eventTarget.split("$").join(":");
theform.__EVENTARGUMENT.value = eventArgument;
theform.submit();
}
// -->
</script>
<TABLE width="100%" align="center">
<TR>
<TD align="center" width="10%" bgColor="silver"><FONT size="1"><A class="menu"><a id="hlHelp" href="Help/Help.htm" target="_blank">Help on Search</a></A></FONT></TD>
<TD align="center" width="10%" bgColor="silver"><FONT size="1"><A class="menu" href="../default.asp">Flight
Test Home</A></FONT>
</TD>
<TD align="center" width="10%" bgColor="silver"><FONT size="1"><A class="menu" href="Default.aspx">Screen
Main</A></FONT></TD>
<TD align="center" width="10%" bgColor="silver"><FONT size="1"><A class="menu" href="Add.aspx">Future
Screen</A></FONT></TD>
<TD width="60%">
</TD>
</TR>
</TABLE>
<div id="pnlSearch">
<TABLE width="100%" align="center">
<TR>
<TD align="center" colSpan="2">
<span id="lblHeader" style="font-size:Medium;font-weight:bold;">View/Search</span></TD>
</TR>
</TABLE>
<BR>
<TABLE>
<TR>
<TD align="right">
<span id="Label3" style="font-weight:bold;">Model: </span></TD>
<TD>
<select name="ddModel" onchange="__doPostBack('ddModel','')" language="javascript" id="ddModel">
<option value=""></option>
<option value="46">1</option>
<option value="39">2</option>
<option value="42">3</option>
<option value="26">4</option>
<option value="30">5</option>
<option value="19">6</option>
<option value="16">7</option>
<option selected="selected" value="27">8</option>
</select><!--
<a id="hlHeader" href="./help/help.html" target="_blank">Help</a>
--></TD>
<TD> </TD>
<TD> </TD>
<TD> </TD>
</TR>
<TR>
<TD align="right">
<span id="Label2" style="font-weight:bold;">No: </span></TD>
<TD>
<select name="ddTNo" onchange="__doPostBack('ddTNo','')" language="javascript" id="ddTNo">
<option value=""></option>
<option value="N103SV">N112</option>
<option value="N105SV">N113</option>
<option value="N272MH">N114</option>
<option value="N616CS">N115</option>
<option value="N680CS">N116</option>
<option value="N681CS">N117</option>
<option value="N682CS">N118</option>
</select>
</TD>
<TD> </TD>
<TD> </TD>
<TD> </TD>
</TR>
<TR>
<TD align="right">
<span id="Label4" style="font-weight:bold;">S/N: </span></TD>
<TD>
<select name="ddSNo" onchange="__doPostBack('ddSNo','')" language="javascript" id="ddSNo">
<option value=""></option>
<option value="366">0</option>
<option value="349">000001</option>
<option value="206">000002</option>
<option value="249">000003</option>
<option value="265">000005</option>
<option value="364">000016</option>
<option value="173">000709</option>
</select>
</TD>
<TD> </TD>
<TD> </TD>
<TD> </TD>
</TR>
<TR>
<TD align="right">
<span id="Label14" style="font-weight:bold;">Flight No: </span></TD>
<TD>
<select name="ddFNo" onchange="__doPostBack('ddFtNo','')" language="javascript" id="ddFNo">
<option selected="selected" value="">All</option>
</select></TD>
<TD> </TD>
<TD> </TD>
<TD> </TD>
</TR>
</TABLE>
<BR>
<TABLE>
<TR>
<TD align="right">
<span id="Label1" style="font-weight:bold;">Enter all or part of the Search Criteria. Wild cards are <B>
<U>NOT</U></B> Required. </span></TD>
</TR>
<TR>
<TD>
<input name="tbSearch" type="text" id="tbSearch" OnKeyPress="return clickButton(event,'btnSearch')" style="width:416px;" /></TD>
</TR>
<TR>
<TD>
<input type="submit" name="btnSearch" value="Search" id="btnSearch" />
<input type="submit" name="btnReturn" value="Return to Current screen" id="btnReturn" /></TD>
</TR>
</TABLE>
</div>
</form>
</body>
</HTML>