VS 2008 Determine If Element On Webpage Exists?
May 9, 2009Just like the title says, I have a webbrowser and I need to determine if the element exists or not before I invoke it.
View 1 Replies
ADVERTISEMENT
Link To XML - Determine If An Element Exists In A List?
Apr 27, 2012I am working with LINQ to XML in VB (although answers in C# are great, too). First off- my code works, so this is not critical. However, I can't help but think that what I'm doing with conditional logic should already be doable using the LINQ query itself. Here's what I've got:
'Get the Description elements in the ResultData section where the value is "Op Code"
Dim opCodes As List(Of XElement) = (From c In xdoc.Descendants("ResultData").Descendants("Description")
Where c.Value = "Op Code"[code].....
Please don't be too critical of my method of locating the sibling nodes- the XML files are produced by a third-party testing device and this is the only generic way to get the values I need. What I'm really looking for here is a better way to handle the If block.
VS 2008 : Check If HTML Element Exists?
Sep 8, 2010How do I check if an HTML element exists? This element will only "show" on a certain event. ex: numbers in a non-number textbox or something. I tried
If WebBrowser1.Document.GetElementsByName("ElementName")
But that won't work, because the element "is in" the HTML, even though the page doesn't show it yet.
VS 2008 : Determine If A Website Exists?
Jan 10, 2010Im just trying to determine if a website exists when i navigate my webbrowser. via messagebox.Ive tried this so far but it wont work:
Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
If WebBrowser1.DocumentText.Contains("Action canceled") Then
[code]....
VS 2008 Determine If Worksheet Exists
Feb 15, 2010I am trying to create a function that will determine if a worksheet within the active workbook exits. I have searched many web sites without any luck. Here is the coding I have currently:
HTML
Function SheetExists(ByVal sheetname As String) As Boolean
Dim oWorkbook As Excel.Workbooks
[Code]....
It errors out at Dim oWorksheet As Excel.Worksheet = oWorkbook.Sheets(sheetname).
The error message I am getting is "Object variable or With block variable not set."
Determine If A Certain File Exists On The Add?
Aug 9, 2010I'm using the coding below to determin if a certain file exists on the hdd. However there is an error on this line: If FileExists("C:myfile.txt"))="False" then msgbox "False"
it gives me the following error message:End of statement expected.
what am I doing wrong?
[Code]...
Determine If This Toolstripmenuitem Exists?
Aug 27, 2010Below is the code that is adding a toolstripmenuitem at runtime. I do need to check elsewhere to see if it exists. What I have below is incorrect. How would I change the conditional check below?
ToolStripMenuItemFile.DropDownItems.Add("Save")
ToolStripMenuItemFile.DropDownItems(2).Click += New EventHandler(SaveFile_Click)
If ToolStripMenuItemFile.DropDownItems(2) IsNot Nothing Then
ToolStripMenuItemFile.DropDownItems(2).Text = rm.GetString("Save")
End If
How To Determine If A Printer Exists
May 23, 2012Is there a way to determine if a Printer exists?I want to warn my users that a printer doesn't exist before they send reports to print.
View 4 RepliesCheck If Element Exists In Webbrowser.document?
Jun 19, 2010Is there a way to check if an element is in the webbrowser1.document ?
I can click the button fine, IF the element is on the page, but sometimes i get to the end page, where i just have the "back" button, and no forward button.[code]...
Check If Element(byid) Exists On Page?
Apr 3, 2009My current code:
If webbrowser.document.getElementById("login")
I'm not sure what comes after it.... I've read about and it seems for JS its a simple (or similar to);
{If(document.getelementbyid("login"))
{ if true}
{if false}}
but for VB?
Determine If Datarow Column Exists?
Nov 14, 2008I have a function in VS2008 VB.NET that creates a dataset and reads field values from that were loaded from a SQL Server 2008 database tables. The tables are from varied sources and in some cases particular column/field names are different. Some use a long name; others use a short name. I need to determine whether a short name or a long name is being used.Pseudo code:If row("ShortName") Exists then ReadDataFrom r("ShortName").ToStringElse ReadDataFrom r("LongName").ToStringEnd If
How would I determine if a particular column name exist in a dataset or datarow?
Determine If Directory Exists, Create It If Not
Jan 7, 2009I wanted to create a login system that would have 3 tabs 1 for regular login, 1 for admin login and 1 for account creation. So far so good. It saves the accounts by saving them in a .urs file in the map called /Users/. However when this map does not exist it will show a error. I would want to know what code or so to put into the form_load which will make my program create the map /Users/ if it does not exist. As im not familiar with all the codes and stuff. The only thing i can come up with is
Mkdir "/Users/"
but then ofcourse it would create the folder users everytime i start the program. not i was still "Hello Worlding" a few days ago, so i really am unfamiliar with any sort of high-skilled programming which i probably dont understand.
Determine If URL Exists Without Requesting The File?
Jan 25, 2010I would like to check if a URL exists -- without requesting the file. The program needs to check if a PDF or Excel spreadsheet exists at a particular URL. If it does, it might want to download the file, but it should not download it every time.
I currently use the WebBrowser.Navigate method to do this, but it always downloads the file. But I don't want to actually download the .pdf or .xls file, I just want to determine if the URL exists.
Determine If Structure Element Is Numeric?
Jan 20, 2011I'm writing a rather complex VB2008 programme, To simplify the things, here is the code:
Structure strucFirst
Dim Field1 as Integer
Dim Field2 as Single
[Code]....
I'm not sure if the pseudocode above is possible in VB at all?
Determine If A Form Class Exists At Runtime?
Feb 17, 2010I have the name of a form in a string variable, e.g. "frmOptions". I want to:
1) get the fully qualified name of the form
2) determine if the form exists in the application
3) create an instance of the form
4) show the form
I know that using reflection I can do #3 this way, but I need to get the fully qualified form name first[code]...
.Net LINQ Query To Determine Whether More Than One Element Has The Same Value For A Property?
Jun 28, 2011I am trying to write a LINQ query which will return true if there are multiple objects which have a property with the same value.
Here is what I have come up with so far:
Formatters.Where(Function(f As DataModel.Formatter) _
Formatters.Select(Function(f2 As DataModel.Formatter) f2.Name.ToLower()).Contains(f.Name.ToLower())).Count > 1
However the above always returns true as long as their are more then 1 elements in the list?
Determine What Element Of A Form Is The One Responsible For An Autopostback In ASP.NET?
Nov 12, 2009I have a number of dropdown lists that I'm trying to chain together and they all have autopostback. How can I tell which one of the dropdown lists was the one responsibe for the autopostback?
View 1 RepliesEstablish If Webpage Exists?
Feb 20, 2009is it possible to establish if a url exists?
The reason is I want to establish if the server is active or not.
Detecting The Value Of An Element On A Webpage?
Mar 1, 2009On a web page there is a line that reads:
<div id="attack_alert" style="visibility:hidden;">
Now, if I open the web page up in web browser within my vb.net application.How do I then detect whether the "attack_alert" is:
1, <div id="attack_alert" style="visibility:visible;">
OR
2, <div id="attack_alert" style="visibility:hidden;">
VS 2010 - If Webpage Contains This Element Then?
Dec 22, 2011I'm looking to change my code in a program to make it more efficient. I'll show you what I have, and explain what I need help with.This is my current
[code]...
How can I go about checking if the element is present within the current webpage before I search for it and invoke a click on it?
Check If Webpage Exists And See If It Contains String?
Jan 7, 2010I need to check if a webpage exists if it does whether a certain string exists anywhere on the page. Preferably I'd like to do this without a webbrowser control, so that images don't have to be downloaded and it doesn't have to be rendered.
View 1 RepliesReading Text From Element On Webpage
Jun 4, 2012I am Trying To Read Some Text From A Post "Text Area" On A Webpage, But I Also Want It To Paste Into My Textbox In Clear Text And Not The Html Source.
This Is My Code So Far:
Private Sub ButtonItem1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonItem1.Click
WebBrowser1.Navigate("[URL]")
TextBoxX1.Text = WebBrowser1.document.GetElementById("post_message_1594").GetAttribute("Valve").ToString
End Sub
Wait Until Element Is Loaded In A Webpage?
Nov 9, 2009programming and was trying to get a form button to load the yahoo login webpage, wait until the send button was loaded and auto enter the username and password and hit the send button. My code is as follows
Public Class WebLogin
Dim ie As Object
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code].....
Web Request A Specfic Element In A Webpage Using Id?
Jan 19, 2010I would like to use the WebRquest Class in Visual Basic to get the Inner Text or Inner HTML of a specific element in the requested web page.For instance, if the webpage contains an element with the id ="label1" and has inner text ="hello" then I should use the WebRquest to extract the inner text of the specified element and not the source of the whole page. Note that I do know the alternative solution , which is using the Web Browser Control . But unfortunately this is unsuffiecent for my application.
View 2 RepliesForms :: Wait Until Element Is Loaded In A Webpage?
May 16, 2011I am trying to get a form button to load the yahoo login webpage, wait until the send button was loaded and auto enter the username and password and hit the send button. My code is as follows
Public Class WebLogin
Dim ie As Object
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
ie = CreateObject("internetexplorer.application")
[code]....
Determine If Webpage Did Not Load Correctly In Webbrowser?
Jul 9, 2010I know you can determine when the page is completed, but even when not connected to the internet the page complete event will rise when the error page is done loading to the we bbrowser. Is there a way to check if the internet is connected and loading webpages?
View 6 RepliesHtml - Grab Webpage Table Data (using Span Class Element) Into Listview Control In App?
Feb 20, 2012I need to grab some data from a webpage but for me the main problem is I can't grab the data the way I want. I want to grab the data in a listview control but my code is fetching all data within any span tag (span class "inputFieldLabel" which is not required) in a single column of a listview control. I am giving the format (source) of the webpage below and my coding in vb.net (2008),
<br>
<span class="inputFieldLabel">Following Are ...</span>
<span class="inputFieldLabel">01/02/2011</span>
<span class="inputFieldLabel">And</span>
[Code].....
Asp.net - Element 'system.webServer' Has Invalid Child Element 'rewrite'?
Feb 14, 2012I have a number of rewrite rules for a lot of things that I did in IIS7, like removing trailing slashes, canonnical URLs, lowercase lettering, and such. IIS altered my web.config, and everything works fine on the website, like it should. But in the Visual Studio web.config, the opening < rewrite > statement is underlined in blue, and at the bottom of VS, it says that the element 'system.webServer' has invalid child element 'rewrite'. But this is how IIS made it. I didn't do this manually. Should I be concerned with this VS error, or should I just leave as be, since it's working how it should work? Here's an example of my web.config:
[Code]...
Make Webbrowser Not Click On Element But Grab Element Name?
Apr 13, 2011Is there a way to control the way a browser behaves such as if I click on this link it doesn't navigate to that link but instead show me the source code behind that button?
View 1 RepliesRandomly Pick An Element From An Array And Can Only Use That Element Three Times
Mar 11, 2010I need to randomly pick an element from an array and I can only use that element three times,I can randomly pick the element but how do I go about only using it three times.
View 4 Replies