I want to do a web navigation program with autofill forms.(for semi-automatic directory submition). This is one example but because the directory's are diferent I need to check first if fields exists, and I dont know how?
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
WebBrowser1.Document.GetElementById("Title").InnerText = Form2.titlu.Text
End Sub
Is 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]...
I am trying to get the HTML inside a HTMLElement which has an id "block". I have tried:
If webbrowser1.document.getelementbyid("block") isnot nothing then
MsgBox(webbrowser1.document.getelementbyid("block").innerHTML)
end if
But it keep throwing a NullReferenceException and tells me to check if it null/nothing which is what I'm doing.
So how do I check if an element in a HTMLdocument with a certain ID exists?
How can we check if a Drive exists in the system
View 4 RepliesHow do I check if a directory exists?
View 1 RepliesI have a security timer to check if the directory exists which I want to access after it's been created by an external application, but what I have done doesn't seem to be the solution although it sounds like a very normal solution to me.
What I have done:
1) External application gets run which is going to create the directory
2) I set the variables to make the timer able to know what to check
3) My application needs to wait till the boolean variable gets set to true, so I put it in a
While:
vb.net
'Non existing files protection
While (Not bDirectoryExists)
If bDirectoryExists Then
Exit While 'In case it got created in the meanwhile
End If
If Not tmrFileCheck.Enabled Then
tmrFileCheck.Enabled = True
End If
End While
4) In my logic, the application should go out of the while now because the variable is set to true, and the code moves on, which never happens..
How can I check to see if a certain node/element exists in a XDocument object?
View 4 RepliesI'm having trouble finding a reliable method to check if a directory (folder) exists on an FTP server. I want to create new directories and then upload files into them but thought it best to check if the directory already exists. Although attmepting to create a directory that already exists does not seem to cause any errors, it does waste a bit of time.
This code reliably checks if a FILE exists:
[code...]
I have attempted to modify this with ListDirectory in place of GetDateTimestamp (to check if a directory exists) but it seems no exception is thrown whether the directory exists or not. I've done lots of Googling but haven't found a satisfactory answer.
My intent is to have the code - on a button.click event - check the Username and Password fields and return an error depending on which is wrong. Or if both are wrong, return a different error message. I've set the username as parts and the password as parts (still learning how to use external authentication). [Code]
View 2 Repliesexperience on how to create an engine using C# (VB.NET is okay too) that is generic enough to handle most cases of MS Word text fields I need to fill with data I'm getting from a database? In short, I'm about to embark on this little Office automation excursion and I'm hoping a little bit of feedback here.
View 2 RepliesIs there a way to check to make sure that you dont get a "page not found" error during a webbrowser.navigate call?
View 2 RepliesDetails: I want to compare these above two table1 and 2 . The unmatched records should be save in a new table .
objectives
1 Should take input the table and fields we want to match each other.
2 Then after searching or reading the record from table and selected fields save the unmatch records in a new table
I'm trying to query old Access database tables and compare them with SQL Server tables.They often don't have primary keys, or they have extra fields that had some purpose in the nineties, etc., or the new tables have new fields, etc.I need to find records - based on a set of fields specified at runtime - that are in one table but not another.So, I do this kind of query all the time in SQL, when I'm comparing data in different tables:
dim fields_i_care_about as string = "field1, field2, field3"
'This kind of thing gets set by a caller, can be any number of fields, depends on the
'table
dim s as string= ""
[code]....
It tells me it can't convert a Boolean - Is there any way to do this without Linq expressions? They seem far more complex than what I'm trying to do here, and they take a lot of code, and also I can't seem to find examples of Expressions where we're comparing two fields in a subquery.Is there a simpler way? I know I could do the usual EXISTS query using JOIN or IN - in this case I don't need the query to be super fast or anything. And I don't need to use a DataTable or DataSet - I can put the data in some other kind of object.
I am having trouble with my new project. I want my program to check if the internet explorer installed on the clients computer has flash player installed.
View 2 RepliesI was wondering if anyone could show me how to check if a tag exists?Here is the code that I am using to get the information from the xml.
Dim XmlFile As New XDocument
XmlFile = XDocument.Load(WorkingDirectory & "ToolsMediaInfoMediaInfo.xml")
Dim Manage = XmlFile...<track>
For Each XmlTag In Manage
If XmlTag.FirstAttribute.Value = "General" Then
[Code]...
This is the standard way of checking if URL exists [code]....
return true; } catch (Exception ex) { return false; } But my problem is that we have to check it for around 100 URL's. It takes more then 2 minutes to check for all as it is trying to get response of all of them. Is there any way that we can check if URL exists without getting complete Response so that total response time is less.
In my code, I want to check if a referrer url exists and if the referrer url contains a specific sub string. I know how to check for the sub string:
If( InStr( Request.UrlReferrer.ToString(), "some sub string here" ) > 0 ) Then
But I don't know how to check if a referrer exists or not. No refer exists if the url is entered in manually in the address bar. So I tried this, but this does not work:
If (Not (Request.UrlReferrer.ToString() = "")) And (InStr(Request.UrlReferrer.ToString(), "some sub string here") > 0) Then
how do check if a referrer exists?
I have a windows service which fetches data from various datasources and build a XML file and send it to a webservice. For example first I will get customer details from Oracle Database and build the XML file and then the SQL Server database and build the customer details XML. I am planning to use the same function below to build the customer object irrespective of what the datasource is. But dr("age") column is not available in SQLserver datbase How can I check if a column exists or not.[code]
View 3 RepliesI am trying to check if a folder exist, it doesn't work if the folder name has a space or "_" or "-". .
here is an example of cases that don't work:
"Folder test"
"Folder_test""
"Folder-test"
I know how to make a new directory on an FTP server, but I wanted to know how I can check if a direcogtry exists, and if it exists display a message?
View 2 RepliesI am using Caspol.exe to install a custom Permission set and add Code Groups for my .Net 2.0 Windows Application.
I have created a Console Application that uses caspol.exe to add Permission Set and Code Groups. I first install the Permission Set and if I do not get an error, I continue to install the Code Groups
Now sometimes I need to add a new Code Group to the client machine, so I make the changes to the console app and it is executed on the client machine. If the client machine already has the Permission Set installed, it returns an error and stops the further processing.
So, I want to know if I can check whether a custom Permission Set is already added or not?
How would i just if a website exists, and, if so, launch a browser to open it. I am making a little tool for one of my freinds and it allow then to quickly launch websites. How would I check if that is a valid website to launch, so i don't get an error if it is not valid.[code]The error i want to stop is "Cannot start process because a file name has not been provided."So basically i want to make sure that the program can launch the URL so i don't get this error
View 3 RepliesI cant get the following code to check if my regestrykey exists can some one help. the idea is to check if it exists if so do nothing if not create it, along with its value...
the full key is HKEY_LOCAL_MACHINESOFTWAREVTSAdvanced Offset 2AdminAccess
> If Dir$("HKEY_LOCAL_MACHINESOFTWAREVTSAdvanced Offset 2Admin", vbDirectory) <> "" Then
[Code]....
I need to figure out if a registy key exists under the HKCU hive. If the key exists do this, if not then this.
View 6 RepliesI have a small database. 2 main tables called CaseDetails and Checks.Each record in CaseDetails can have 3 checks recorded against it in the Checks table. But can only have one check of each type (check types 1, 2, 3).I have 3 linkbuttons which will take the user to the input form for each 'check'. If a 'check' already exists i want to hide the linkbutton that takes the user to that 'check type' input form (the 3 input forms have different fields).So what i need to do, is connect to the SQL database and see if a record exists for each 'check type' and hide the linkbutton to prevent users from entering another record with the same 'check type'?I have tried reading the reults into an array and examining that array, but havent been able to do so.
View 5 RepliesI'm doing an application to manage a school of music, at the moment i'm working on registration (with MySQL DB).
Imports MySql.Data.MySqlClient
Public Class Admin_Reg
Dim server As String = "Server=localhost;Database=escola_musica;Uid=root;Pwd=;"
[Code].....
Now i want to verefy the table if the username exists or not. If it exists msgbox "Registration Complete", if not "Username already exists. Choose another one..."
I am trying to figure out how to check if a registry key exists. If it does, do nothing, if it doesn't, recreate it.I've found numerous resources on the subject, and have made progress, but one little thing is stoping me.[code]The problem is that this reports "Not Found", even though the key 'regkey' exists in the registry. Also, if I remove 'regkey' from the code, it reports "Found". So it does find the subdirectory in the registry.My question is, how do I check to see if the 'regkey' exists? I'm running Windows XP Pro SP2.
View 19 RepliesHave only just started trying Visual Basic after using Delphi almost ever since it first came out. How on earth do I see if a file exists? - simple terms please
View 2 RepliesI am trying to copy some files to folder.I am using the following statement to check if the source fie exists If My.Computer.FileSystem.FileExists (fileToCopy) Then But I donot know how to check if file exists in the folder before copying.
View 1 RepliesI come back to the MSDN to ask another question now. That is:
How do you check if a battery exists in a computer?
I have the code here to figure out battery percentage.[URl]..But if a battery is not inserted it will show battery 100% and charging instead of it showing that a battery does not exist.