first i created a file by pressing on a label then i want to be able to delete it without restarting app (because it becomes in use)
code is
Dim UniWinDataPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles), "UniWin Activator Data")
Dim MsgIODat = Path.Combine(UniWinDataPath, "MessageIO.dat")
If File.Exists(MsgIODat) Then
'ERROR HERE
File.Delete(MsgIODat)
'''''''''''''''''''''
Dim clrdata = MessageBox.Show("Data Cleared.", "", MessageBoxButtons.OK, MessageBoxIcon.Information)
ElseIf (Not (File.Exists(MsgIODat))) Then
Dim nodata = MessageBox.Show("There is no data to clear.", "", MessageBoxButtons.OK, MessageBoxIcon.Information)
End If
error: The process cannot access the file '(PATH)' because it is being used by another process.
i've searched and didn't find anyone talking about this in vb.net language
is there a way to let my app stop using it to delete the file?
You need to dispose the FileStream returned by the File.Create() Method.
When you create the file,
File.Create("file").Dispose()
Related
Vb.net studio is comparivily new to (as a hobby when I have time) me so I need some help. to simply download a single file is easy I do that by the following code.
Try
' Make a WebClient.
Dim web_client As WebClient = New WebClient
' Download the file.
web_client.DownloadFile("TargetURLSite/MyFolder/" & "MyFile.exe", (Application.StartupPath & "\Plugins\" & MyFile.exe))
Catch ex As Exception
MessageBox.Show(ex.Message, "Download Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
End Try
Easy-Peazy...
But I now have a DataGridView column with file names of files I want to download. I thought that I could use a for each statement get the target file name from the first column of the DataGridView and execute the download function for each of the target files one by one but it dosnt seem to work I am lead to belive that its because the web client is stumbeling over its self still processing each download before being able to continue with the next.
For rowIndex = 0 To DataGridView1.RowCount - 1
'MsgBox("This cell is " & (DataGridView1.Rows(rowIndex).Cells("AppCol").Value.ToString))
Dim TargetApplication As String = (DataGridView1.Rows(rowIndex).Cells("AppCol").Value.ToString)
If My.Computer.FileSystem.FileExists(Application.StartupPath & "\Plugins\" & TargetApplication) Then
'File exists do nothing...
Else
'File dose not exist download to Plugins directory...
Try
' Make a WebClient.
Dim web_client As WebClient = New WebClient
' Download the file.
web_client.DownloadFile("TargetURLSite/MyFolder/" & TargetApplication, (Application.StartupPath & "\Plugins\" & TargetApplication))
Catch ex As Exception
MessageBox.Show(ex.Message, "Download Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
End Try
End If
Next
How do I fix this? I have a limited understanding of vb.net.
So I'm a bit stuck with my project, I am using Visual Studio and coding in Visual Basic, I am also using Microsoft Access with SQL if that helps at all.
What I need is to allow the user to select a document from an OpenFileDialog and to then save that document to the actual program so it is there when the program is next ran.
The following code is triggered on a button press, what I have so far is...
saveDocumentDialog.Filter = "Document Files|*.docx;*.doc;*.dot;*.txt;*.rtf;*.pdf;*.ppt;*.pptx;*.xls;*.xlsx"
saveDocumentDialog.FileName = "Untitled"
saveDocumentDialog.InitialDirectory = My.Computer.FileSystem.SpecialDirectories.Desktop
saveDocumentDialog.ShowDialog()
If saveDocumentDialog.ShowDialog = Windows.Forms.DialogResult.OK Then
fullFilename = saveDocumentDialog.FileName
End If
Using openDocumentDialog As New SaveFileDialog
Dim filename As String = IO.Path.GetFileName(fullFilename)
openDocumentDialog.FileName = "Untitled"
openDocumentDialog.InitialDirectory = My.Computer.FileSystem.SpecialDirectories.Desktop
openDocumentDialog.Title = "Select Save Location"
openDocumentDialog.Filter = "All Files (*.*)|*.*"
If openDocumentDialog.ShowDialog = Windows.Forms.DialogResult.OK Then
Try
My.Computer.FileSystem.CopyFile(fullFilename, openDocumentDialog.FileName)
Catch ex As Exception
MessageBox.Show("Could not copy the file." & Environment.NewLine & ex.Message, "Error copying file.", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
End If
One way to do this is to designate a specific folder to the program(e.g. Public Documents), and save the files there and reload them from the folder when the program restarts. You could either hard code the path, or make a setting in the program for the user to specify a folder they would prefer.
I am building an app which installs all the company's bespoke software at the click of a button. Included in the list is an asset tracker/reporting tool which must run at startup for everyone. Our standard build (I have no control over this whatsoever) is Windows 10, and we also have some legacy Windows 7 machines around, but in each case the startup registry keys are locked down so I started to create shortcuts in C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup.
If the startup folder doesn't exist, then it creates the folder. Logged on as local admin, I can create the startup folder manually without UAC popping up, take ownership of the folder and assign Everyone to have modify access, creating a shortcut in there. When I log off/on, the software runs. However when I code this, I get permissions errors.
Here's the code:
Sub DetectFolders()
Dim sFolder1 As String = "C:\My Apps\"
Dim sFolder2 As String = "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\"
Dim sFolder3 As String = "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\"
If Not Directory.Exists(sFolder1) Then
Directory.CreateDirectory(sFolder1)
End If
If Not Directory.Exists(sFolder2) Then
Try
' create folder
TakeOwnership(sFolder3)
Application.DoEvents()
AddDirectorySecurity(sFolder3, "MyDomain\" & Environment.UserName, FileSystemRights.FullControl, AccessControlType.Allow)
Application.DoEvents()
Directory.CreateDirectory(sFolder2)
Application.DoEvents()
TakeOwnership(sFolder2)
' everyone has modify access // TEST
AddDirectorySecurity(sFolder2, "Everyone", FileSystemRights.Modify, AccessControlType.Allow)
Catch ex As Exception
MessageBox.Show(ex.Message, "Config", MessageBoxButtons.OK, MessageBoxIcon.Error)
Me.Close()
End Try
End If
End Sub
Sub TakeOwnership(ByVal sfolder As String)
' take ownership
Try
Dim ds As System.Security.AccessControl.DirectorySecurity
Dim account As System.Security.Principal.NTAccount
ds = System.IO.Directory.GetAccessControl(sfolder, System.Security.AccessControl.AccessControlSections.Owner)
account = New System.Security.Principal.NTAccount(System.Security.Principal.WindowsIdentity.GetCurrent.Name)
ds.SetOwner(account)
System.IO.Directory.SetAccessControl(sfolder, ds)
Application.DoEvents()
Catch ex As Exception
MessageBox.Show("" & ex.Message & "", "Take Ownership", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
End Sub
Sub AddDirectorySecurity(ByVal FileName As String, ByVal Account As String, ByVal Rights As FileSystemRights, ByVal ControlType As AccessControlType)
Try
' Create a new DirectoryInfoobject.
Dim dInfo As New DirectoryInfo(FileName)
' Get a DirectorySecurity object that represents the
' current security settings.
Dim dSecurity As DirectorySecurity = dInfo.GetAccessControl()
' Add the FileSystemAccessRule to the security settings.
dSecurity.AddAccessRule(New FileSystemAccessRule(Account, Rights, ControlType))
' Set the new access settings.
dInfo.SetAccessControl(dSecurity)
Catch ex As Exception
MessageBox.Show("" & ex.Message & "", "Add Security", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
End Sub
The first two Errors that appear is: Attempted to perform an unauthorized Operation, generated from the first time that AddDirectorySecurity and TakeOwnership are called.
I then get an error which states:
Access to the path 'C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup' is denied.
This is generated from the directory.createdirectory line in DetectFolders sub
I'm rapidly beginning to run out of ideas to get this working. Is it something in my code? Am I missing something, or does windows 10 not work in this way. Any constructive help will be gratefully received.
I am working on an application for work. We use an excel file to create reports. I am rusty in coding and really have not faced such a large request. The way the application works is there is standard toolbar. When the user opens the application he is presented with blank form. They must first create a new file and save it to their folder of choice. I have used the stream reader/writer but the problem is there is large amounts of data that user has to fillout so my code is horrible and monster like and I was wondering is there an easier way?
ToolStripLabel1.Text = FileDataStorage.OpenFileTextBox1.Text
If ToolStripLabel1.Text = ("C:\Temp\New QCA.qca") Then
MsgBox("Must Save New file first ACCESS DENIED!")
End If
Dim FILE_NAME As String = FileDataStorage.OpenFileTextBox1.Text
Try
If System.IO.File.Exists(FILE_NAME) = True Then
Dim objWriter As New System.IO.StreamWriter(FILE_NAME)
objWriter.WriteLine(General_Data.GTextBox1.Text)
objWriter.WriteLine(General_Data.GTextBox2.Text)
objWriter.WriteLine(General_Data.GTextBox3.Text)
objWriter.WriteLine(General_Data.GTextBox4.Text)
objWriter.WriteLine(General_Data.GTextBox5.Text)
objWriter.WriteLine(General_Data.GTextBox6.Text)
objWriter.WriteLine(General_Data.GTextBox7.Text)
objWriter.WriteLine(General_Data.GTextBox8.Text)
objWriter.WriteLine(General_Data.GTextBox9.Text)
objWriter.WriteLine(General_Data.GTextBox10.Text)
objWriter.WriteLine(General_Data.GTextBox11.Text)
objWriter.WriteLine(Inventory.ComboBox1.Text)
objWriter.WriteLine(Inventory.ComboBox2.Text)
objWriter.WriteLine(Inventory.ComboBox3.Text)
objWriter.WriteLine(Inventory.ComboBox4.Text)
objWriter.WriteLine(Inventory.ComboBox5.Text)
objWriter.WriteLine(Inventory.ComboBox6.Text)
objWriter.WriteLine(Inventory.ComboBox7.Text)
objWriter.WriteLine(Inventory.ComboBox8.Text)
objWriter.WriteLine(Inventory.ComboBox9.Text)
objWriter.WriteLine(Inventory.ComboBox10.Text)
objWriter.WriteLine(Inventory.ComboBox11.Text)
objWriter.WriteLine(Inventory.ComboBox12.Text)
objWriter.WriteLine(Inventory.ComboBox13.Text)
objWriter.WriteLine(Inventory.ComboBox14.Text)
objWriter.WriteLine(Inventory.ComboBox15.Text)
objWriter.WriteLine(Inventory.ComboBox16.Text)
objWriter.WriteLine(Inventory.ComboBox17.Text)
objWriter.WriteLine(Inventory.ComboBox18.Text)
objWriter.WriteLine(Inventory.ComboBox19.Text)
objWriter.WriteLine(Inventory.ComboBox20.Text)
objWriter.WriteLine(Inventory.TextBox1.Text)
objWriter.WriteLine(Inventory.TextBox2.Text)
objWriter.WriteLine(Inventory.TextBox3.Text)
objWriter.WriteLine(Inventory.TextBox4.Text)
objWriter.WriteLine(Inventory.TextBox5.Text)
objWriter.WriteLine(Inventory.TextBox6.Text)
objWriter.WriteLine(Inventory.TextBox7.Text)
objWriter.WriteLine(Inventory.TextBox8.Text)
objWriter.WriteLine(Inventory.TextBox9.Text)
objWriter.WriteLine(Inventory.TextBox10.Text)
objWriter.WriteLine(Inventory.TextBox11.Text)
objWriter.WriteLine(Inventory.TextBox12.Text)
objWriter.WriteLine(Inventory.TextBox13.Text)
objWriter.WriteLine(Inventory.TextBox14.Text)
objWriter.WriteLine(Inventory.TextBox15.Text)
objWriter.WriteLine(Inventory.TextBox16.Text)
objWriter.WriteLine(Inventory.TextBox17.Text)
objWriter.WriteLine(Inventory.TextBox18.Text)
objWriter.WriteLine(Inventory.TextBox19.Text)
objWriter.WriteLine(Inventory.TextBox20.Text)
objWriter.WriteLine(Inventory.TextBox21.Text)
objWriter.WriteLine(Inventory.TextBox22.Text)
objWriter.WriteLine(Inventory.TextBox23.Text)
objWriter.WriteLine(Inventory.TextBox24.Text)
objWriter.WriteLine(Inventory.TextBox25.Text)
objWriter.WriteLine(Inventory.TextBox26.Text)
objWriter.WriteLine(Inventory.TextBox27.Text)
objWriter.WriteLine(Inventory.TextBox28.Text)
objWriter.WriteLine(Inventory.TextBox29.Text)
objWriter.WriteLine(Inventory.TextBox30.Text)
objWriter.WriteLine(Inventory.TextBox31.Text)
objWriter.WriteLine(Inventory.TextBox32.Text)
objWriter.WriteLine(Inventory.TextBox33.Text)
objWriter.WriteLine(Inventory.TextBox34.Text)
objWriter.WriteLine(Inventory.TextBox35.Text)
objWriter.WriteLine(Inventory.TextBox36.Text)
objWriter.WriteLine(Inventory.TextBox37.Text)
objWriter.WriteLine(Inventory.TextBox38.Text)
objWriter.WriteLine(Inventory.TextBox39.Text)
objWriter.WriteLine(Inventory.TextBox40.Text)
objWriter.WriteLine(Inventory.TextBox41.Text)
objWriter.WriteLine(Inventory.TextBox42.Text)
objWriter.WriteLine(Inventory.TextBox43.Text)
objWriter.WriteLine(Inventory.TextBox44.Text)
objWriter.WriteLine(Inventory.TextBox45.Text)
objWriter.WriteLine(Inventory.TextBox46.Text)
objWriter.WriteLine(Inventory.TextBox47.Text)
objWriter.WriteLine(Inventory.TextBox48.Text)
objWriter.WriteLine(Inventory.TextBox49.Text)
objWriter.WriteLine(Inventory.TextBox50.Text)
objWriter.WriteLine(Inventory.TextBox51.Text)
objWriter.WriteLine(Inventory.TextBox52.Text)
objWriter.WriteLine(Inventory.TextBox53.Text)
objWriter.WriteLine(Inventory.TextBox54.Text)
objWriter.WriteLine(Inventory.TextBox55.Text)
objWriter.WriteLine(Inventory.TextBox56.Text)
objWriter.WriteLine(Inventory.TextBox57.Text)
objWriter.WriteLine(Inventory.TextBox58.Text)
objWriter.WriteLine(Inventory.TextBox59.Text)
objWriter.WriteLine(Inventory.TextBox60.Text)
objWriter.WriteLine(Inventory.TextBox61.Text)
objWriter.WriteLine(Inventory.TextBox62.Text)
objWriter.WriteLine(Inventory.TextBox63.Text)
objWriter.WriteLine(Inventory.TextBox64.Text)
objWriter.WriteLine(Inventory.TextBox65.Text)
objWriter.WriteLine(Inventory.TextBox66.Text)
objWriter.WriteLine(Inventory.TextBox67.Text)
objWriter.WriteLine(Inventory.TextBox68.Text)
objWriter.WriteLine(Inventory.TextBox69.Text)
objWriter.WriteLine(Inventory.TextBox70.Text)
objWriter.WriteLine(Inventory.TextBox71.Text)
objWriter.WriteLine(Inventory.TextBox72.Text)
objWriter.WriteLine(Inventory.TextBox73.Text)
objWriter.WriteLine(Inventory.TextBox74.Text)
objWriter.WriteLine(Inventory.TextBox75.Text)
objWriter.WriteLine(Inventory.TextBox76.Text)
objWriter.WriteLine(Inventory.TextBox77.Text)
objWriter.WriteLine(Inventory.TextBox78.Text)
objWriter.WriteLine(Inventory.TextBox79.Text)
objWriter.WriteLine(Inventory.TextBox80.Text)
objWriter.WriteLine(Water_QC.ComboBox1.Text)
objWriter.WriteLine(Water_QC.TextBox1.Text)
objWriter.WriteLine(Water_QC.TextBox2.Text)
objWriter.WriteLine(Water_QC.TextBox3.Text)
objWriter.WriteLine(Water_QC.TextBox4.Text)
objWriter.WriteLine(Water_QC.TextBox5.Text)
objWriter.WriteLine(Water_QC.ComboBox2.Text)
objWriter.WriteLine(Water_QC.TextBox6.Text)
objWriter.WriteLine(Water_QC.TextBox7.Text)
objWriter.WriteLine(Water_QC.TextBox8.Text)
objWriter.WriteLine(Water_QC.TextBox9.Text)
objWriter.WriteLine(Water_QC.TextBox10.Text)
objWriter.WriteLine(Water_QC.TextBox11.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox1.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox2.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox3.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox4.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox5.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox6.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox7.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox8.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox9.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox10.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox11.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox12.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox13.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox14.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox15.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox16.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox17.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox18.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox19.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox20.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox21.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox22.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox23.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox24.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox25.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox26.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox27.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox28.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox29.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox30.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox31.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox32.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox33.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox34.Text)
objWriter.WriteLine(Base_Gel_QC.TextBox35.Text)
objWriter.WriteLine(Acid_QC.TextBox1.Text)
objWriter.WriteLine(Acid_QC.TextBox2.Text)
objWriter.WriteLine(Acid_QC.TextBox3.Text)
objWriter.WriteLine(Acid_QC.TextBox4.Text)
objWriter.WriteLine(Acid_QC.TextBox5.Text)
objWriter.WriteLine(Acid_QC.TextBox6.Text)
objWriter.WriteLine(Acid_QC.TextBox7.Text)
objWriter.WriteLine(Acid_QC.TextBox8.Text)
objWriter.WriteLine(Acid_QC.TextBox9.Text)
objWriter.WriteLine(Acid_QC.TextBox10.Text)
objWriter.WriteLine(Acid_QC.TextBox11.Text)
objWriter.WriteLine(Acid_QC.TextBox12.Text)
objWriter.WriteLine(Acid_QC.TextBox13.Text)
objWriter.WriteLine(Acid_QC.TextBox14.Text)
objWriter.WriteLine(Acid_QC.TextBox15.Text)
objWriter.WriteLine(Acid_QC.TextBox16.Text)
objWriter.WriteLine(Acid_QC.TextBox17.Text)
objWriter.WriteLine(Acid_QC.TextBox18.Text)
objWriter.WriteLine(Acid_QC.TextBox19.Text)
objWriter.WriteLine(Acid_QC.TextBox20.Text)
objWriter.WriteLine(Acid_QC.TextBox21.Text)
objWriter.WriteLine(Acid_QC.TextBox22.Text)
objWriter.WriteLine(Acid_QC.TextBox23.Text)
objWriter.WriteLine(Acid_QC.TextBox24.Text)
objWriter.WriteLine(Acid_QC.TextBox25.Text)
objWriter.WriteLine(Acid_QC.TextBox26.Text)
objWriter.WriteLine(Acid_QC.TextBox27.Text)
objWriter.WriteLine(Acid_QC.TextBox28.Text)
objWriter.WriteLine(Acid_QC.TextBox29.Text)
objWriter.WriteLine(Acid_QC.TextBox30.Text)
objWriter.WriteLine(Acid_QC.TextBox31.Text)
objWriter.WriteLine(Acid_QC.TextBox32.Text)
objWriter.WriteLine(Acid_QC.TextBox33.Text)
objWriter.WriteLine(Acid_QC.TextBox34.Text)
objWriter.WriteLine(Acid_QC.TextBox35.Text)
objWriter.WriteLine(Acid_QC.TextBox36.Text)
objWriter.WriteLine(Acid_QC.TextBox37.Text)
objWriter.WriteLine(Acid_QC.TextBox38.Text)
objWriter.WriteLine(Acid_QC.TextBox39.Text)
objWriter.WriteLine(Acid_QC.TextBox40.Text)
objWriter.WriteLine(Acid_QC.TextBox41.Text)
objWriter.WriteLine(Acid_QC.TextBox42.Text)
objWriter.WriteLine(Acid_QC.TextBox43.Text)
objWriter.WriteLine(Acid_QC.TextBox44.Text)
objWriter.WriteLine(Acid_QC.TextBox45.Text)
objWriter.WriteLine(Acid_QC.TextBox46.Text)
objWriter.WriteLine(Acid_QC.TextBox47.Text)
objWriter.WriteLine(Acid_QC.TextBox48.Text)
objWriter.WriteLine(Acid_QC.TextBox49.Text)
objWriter.WriteLine(Acid_QC.TextBox50.Text)
objWriter.WriteLine(Acid_QC.TextBox51.Text)
objWriter.WriteLine(Acid_QC.TextBox52.Text)
objWriter.WriteLine(Acid_QC.TextBox53.Text)
objWriter.WriteLine(Acid_QC.TextBox54.Text)
objWriter.WriteLine(Acid_QC.TextBox55.Text)
objWriter.WriteLine(Acid_QC.TextBox56.Text)
objWriter.WriteLine(Acid_QC.TextBox57.Text)
objWriter.WriteLine(Acid_QC.TextBox58.Text)
objWriter.WriteLine(Acid_QC.TextBox59.Text)
objWriter.WriteLine(Acid_QC.TextBox60.Text)
objWriter.WriteLine(Acid_QC.TextBox61.Text)
objWriter.WriteLine(Acid_QC.TextBox62.Text)
objWriter.WriteLine(Acid_QC.TextBox63.Text)
objWriter.WriteLine(Acid_QC.TextBox64.Text)
objWriter.WriteLine(Acid_QC.TextBox65.Text)
objWriter.Close()
MsgBox("Data written to file")
Else
'Do Nothing
End If
Catch ex As Exception
End Try
End Sub
If you mean making the code more elegant? You could do something like the following.
ToolStripLabel1.Text = FileDataStorage.OpenFileTextBox1.Text
If ToolStripLabel1.Text = ("C:\Temp\New QCA.qca") Then
MsgBox("Must Save New file first ACCESS DENIED!")
End If
Dim FILE_NAME As String = FileDataStorage.OpenFileTextBox1.Text
Try
If System.IO.File.Exists(FILE_NAME) = True Then
Dim objWriter As New System.IO.StreamWriter(FILE_NAME)
For Each c As Control In Form.Controls
If TypeOf c Is TextBox Or TypeOf c Is ComboBox Then
objWriter.WriteLine(c.Text)
End If
Next
objWriter.Close()
MsgBox("Data written to file")
Else
'Do Nothing
End If
Catch ex As Exception
Throw
End Try
In keeping with what you have already, an external function similar to this may work for you.
It goes over the form passed to it, and then finds the objects of a certain type, and then prints them out to the writer that you've created there. You'll have to make it work with what you have already, but something like this would save so many lines.
What it does is gets the number of controls on the form, and then goes across each one to get its type. If the type is correct, then it just writes its contents to the file.
Private sub writeToFile(formFrom as Form)
Dim controls As Control
For Each controls In formFrom.Controls
If TypeOf (controls) Is TextBox Then
objWriter.WriteLine(formFrom.controls.text)
elseif TypeOf (controls) is ComboBox then
objWriter.WriteLine(formFrom.controls.text)
End If
Next
end sub
We have to learn VB.NET for the semester, my experience lies mainly with C# - not that this should make a difference to this particular problem.
I've used just about the most simple way to save a file using the .NET framework, but Windows 7 won't let me save the file anywhere (or anywhere that I have found yet). Here is the code I am using to save a text file.
Dim dialog As FolderBrowserDialog = New FolderBrowserDialog()
Dim saveLocation As String = dialog.SelectedPath
... Build up output string ...
Try
' Try to write the file.
My.Computer.FileSystem.WriteAllText(saveLocation, output, False)
Catch PermissionEx As UnauthorizedAccessException
' We do not have permissions to save in this folder.
MessageBox.Show("Do not have permissions to save file to the folder specified. Please try saving somewhere different.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
Catch Ex As Exception
' Catch any exceptions that occured when trying to write the file.
MessageBox.Show("Writing the file was not successful.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
End Try
The problem is that this using this code throws an UnauthorizedAccessException no matter where I try to save the file. I've tried running the .exe file as administrator, and the IDE as administrator.
Is this just Windows 7 being overprotective? And if so, what can I do to solve this problem? The requirements state that I be able to save a file!
Thanks.
This code:
Dim dialog As FolderBrowserDialog = New FolderBrowserDialog()
Dim saveLocation As String = dialog.SelectedPath
Is giving you the location of a folder. Then you're trying to save a file with the same name as the folder. Instead, I assume you want to save a file inside that folder:
Dim saveLocation As String = dialog.SelectedPath
saveLocation = Path.Combine(saveLocation, "SomeFile.txt")
That will create a file called "SomeFile.txt" inside the selected folder.
Alternatively, instead of using FolderBrowserDialog to choose a folder, use SaveFileDialog to select the actual file instead.