VS 2008 Use VB To See If A Certain URL Exists?
Sep 23, 2009Is it possible to use VB to see if a certain URL exists. For example see if [URL]
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VS 2008 - Checking If Process Exists
Jul 19, 2010I've created the following function and thrown it inside of a timer:
[code]...
It works, but it keeps trying to open media player for each process it looks like. I need to continuously run the function so that Media Player opens when it's closed.how to make sure it opens only once when the process doesn't exist?
VS 2008 - How To Find Out If Value Exists In ComboBox
Jan 17, 2011Controls: textbox, combobox and button
I want to have a condition to find out if the value I enter in the textbox exists in the combobox. The combobox reads a text file.
VS 2008 - Item Exists In Listview?
Sep 9, 2009I am filling a listview control with a big number of items but i came across an problem, the repeated values. In those items i use .Text and .Tag so i can relate some hidden values per item. I have been trying to use the items.find() with no luck since it looks like to search for keys, which i don't really have. Every item has different .Tag values but it can happens that they have the same .Text Is there any way to remove or just not add items based on a .Text search in the ListView?
View 13 RepliesVS 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 Check If Record Exists Or Not?
Apr 14, 2011I am using VS 2008 and MySQL. Which one of the following methods is efficient or a proper one to check if record exists or not before making an attempt to insert.
1. HasRows Property.
2. Select Where Exists
3. Select Count(*)
Or if there is any other appropriate method ( which i am not aware of ) available to do it in vb.net ?
VS 2008 Checking If A Drive Exists?
Feb 9, 2011I'm checking is a file exists as follows.
If txtGradeObs.Text = "" Or Dir(txtGradeObs.Text) = "" Then
MsgBox("Specify the Grade job of Obstructions", vbExclamation, MsgBoxTitle)
Exit Sub
End If
I get an error if the drive does not exist - i.e. G: rather than C:. It used to work in VB6. How can I get it to work.
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."
VS 2008 IF Record Exists In Dataset
Nov 20, 2009At the moment when a user logs into my system it checks to see if a job exists, if so the records are put into a datagridview. However, if there are no jobs in the database I get an error.
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VS 2008 If Row Exists, Update Instead Of Insert?
Apr 15, 2010looking at the code below I have a form that is inserting data from text boxes and a datetimepicker into my database.If Date.text and Shift.text already exist in a row then UPDATE instead of INSERT a new row?
conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=database.mdb;"
da.SelectCommand = New OleDbCommand("SELECT ID, idate, icomment, ishift FROM table")
da.SelectCommand.Connection = conn
[code]....
VS 2008 Saving - If File Exists
Aug 5, 2009How can I make it that if a file exists, it will rename it with the exact name, but with a number by it? For example, my program takes a picture and names it "screenshot." I want it to make it say "screenshot1," if "screenshot" is already used, and so on. This is what I tried, but didn't work.
Dim name as String = "Screenshot"
If File.Exists("C:This" & name & ".png") Then
screenshot.Save("C:This" & name + 1.ToString & ".png",
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VS 2008 Test If Datable Exists?
Jun 28, 2009how can i test if datable exists?
View 1 RepliesVS 2008 Updated Other Record If Exists?
Sep 25, 2011i can't find any wrong, if record exists then updated the record but only can insert the new record.
cannot updated the record.why?
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[2008] Delete Text If It Exists?
Feb 27, 2009blic Class Form1
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
[code]....
VS 2008 : Check If A File Exists In A Directory?
Sep 5, 2009i want to check if a file exists in the Application.StartupPath. I tried My.Computer.FileSystem.FileExists but that checks the whole computer doesn't it. ? How do i check if a file exists in a directory?
View 5 RepliesVS 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 Check To See If Item Exists In A List?
Jan 6, 2010see if an object is already in a generic List(Of T) than the way I am currently doing it? The way I do it at the moment is like so:I have a method that I call each time I want to check to see if an object exists in the list (if it already exists I do not want to add it again) and the list to check is passed in to this method along with the item that should be added to it:
[Code]...
So as you can see this function just loops through the list that was passed in and if the DisplayName property of one of the items in the list is the same as the ProgramName argument that was passed in to the method as well then it returns True to indicate that this program is already in the list.I thought about using a Predicate with the List.Find method but cant see how I would get it to work because that predicate method will not have any way of referencing the list (its a method local list, not class level)
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 RepliesVS 2008 Does It Exists Something Like Command Timeout Block
Nov 1, 2009Sometimes my MySQL-commands hangs forever without throwing any exception. I've tried setting both command- and connection timeout for my connector, but it still hangs sometimes.Does it exist some kind of timeout block? Like, if the command hasn't been executed within X seconds, then continue.
View 2 RepliesVS 2008 Search If A File Exists In A Folder?
Aug 31, 2011I have a folder that contains .txt, .pdf, etc files. I want to check if the folder contains a .txt file.If yes, I have to perform some action, if no, no action will be performed.I have this sample code to do the above, but with the know .txt file name.
[Code]...
VS 2008 Validate Whether Or Not Information Exists In A Datagrid?
Dec 8, 2009What is the best way to validate whether or not information exists in a datagrid. Let me give a situation.
What I'm trying to do here is allow the user to search and sort the dgv based off of the character or string that is he/she inputs into a textbox. The things I want to validate are:
The textbox is not blank, and if not blank has valid information. (easy enough)
The dgv has actually been populated from the dataset!!!!!
The second I can't seem to nail down, regardless of what I use. I have tried using rowcollections, columns.count(), cell, item, and a few other properties all of which either get skipped over by my if statements or throw an index is out of range error.
VS 2008 Verify That Email Address Actually Exists?
May 13, 2010I would like to know if there is any way that you can verify that a email address actually exists like using this tool: [URL]. would like to wirte an application that does this in visual basics.
View 6 RepliesVS 2008 Verifying An Email Address Actually Exists?
Mar 25, 2010Is there any way to verify if an email address actually exists?
View 4 RepliesVS 2008 - CopyFile - Error - The File 'e:ssssss.jpg' Already Exists.
May 12, 2010I am trying to run the below code but it is giving error.
Dim BG_Logon As String
OpenFileDialog1.ShowDialog()
BG_Logon = OpenFileDialog1.FileName
My.Computer.FileSystem.CopyFile(BG_Logon, "e:ssssss.jpg")
Error: The file 'e:ssssss.jpg' already exists.
I have checked and there is no such file in E:sss, no matter wherever I copy this file error remains the same.
VS 2008 LDAP Check Path Exists When Authentication Is None
May 15, 2009LDAP check dir exists when authentication is none Experts I am try to check if an LDAP path exists and the following code works fine if the AuthenticationType is not none. How do you check this if the LDAP does not use authentication?
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VS 2008 Remove Item From Listbox If Exists In Another Listbox?
Feb 1, 2010I have 2 listboxes on my form.Listbox 1 - populated with "available" field namesListbox 2 - populated with "selected" field names.There cannot be the same field name in both listboxes - it's either one of the other.The logic I was going to apply was to populate Listbox 1 with every field name ... and then as I populated Listbox with the field names which the user has already selected, remove the corresponding item from Listbox 1.
View 8 RepliesHow To Use If Exists
Apr 15, 2012i am trying to use the if exists command to check if a database exists but it seems i cant declare the "EXISTS" its always giving me problems.i am now using the code with the try and catch if there is an exception it will give a msgbox that will say db already exists.but if there was no error it will say db created successfully the problem is now even if the db exists or no the " finally " condition will excute and show the msg will appear which is db created successfully.on both cases
View 14 RepliesAdd DLL Reference ONLY If It Exists?
Jun 8, 2011In my project I have add-on .dll files. Right now my DLL is called "FTP.dll". What I was wondering was if there was a way I could make it to check if the dll exists in a certain folder
View 9 RepliesCannot Add An Entity That Already Exists?
Mar 9, 2010in my database there are 3 tables
CustomerType
CusID
EventType
EventTypeID
CustomerEventType
CusID
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Check If A Xml Tag Exists?
Sep 25, 2010I 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]...