Why is this generating a message that file is not found

[pooker75]

This code works perfectly except when I start I get a message that file is not found. The file is there and everything reads perfectly. How can I get the file to read and not get the message that the file is not found? Do I need to use something other than Try? I tried taking the Try away and then I get errors and no file reads. Jo Ann

[CODE=vbnet]Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As System.EventArg s) Handles MyBase.Load

'load the item into the combobox
Try

vinStreamreader = New StreamReader("c ar.txt")
DisplayRecord()
Catch ex As Exception
'File is not found.
MessageBox.Show ("File does not exist.")
End Try


End Sub
Private Sub ComboBox1_Selec tedIndexChanged (ByVal sender As System.Object, ByVal e As System.EventArg s) Handles ComboBox1.Selec tedIndexChanged
'Read the next record.
DisplayRecord()
End Sub

Private Sub DisplayRecord()
'Read and display the next record.
Dim vinString As String
Do While vinStreamreader .Peek <> -1
vinString = vinStreamreader .ReadLine()
Me.ComboBox1.Te xt = vinString
Me.ComboBox1.It ems.Add(ComboBo x1.Text)

Me.ListBox1.Ite ms.Add(vinStrea mreader.ReadLin e())
Me.ListBox2.Ite ms.Add(vinStrea mreader.ReadLin e())
Me.ListBox3.Ite ms.Add(vinStrea mreader.ReadLin e())

Loop
'Display labels
Me.Label4.Text = Me.ListBox1.Ite ms(Me.ComboBox1 .SelectedIndex)
Me.Label5.Text = Me.ListBox2.Ite ms(Me.ComboBox1 .SelectedIndex)
Me.Label6.Text = Me.ListBox3.Ite ms(Me.ComboBox1 .SelectedIndex)

End Sub


End Class[/CODE]

[Killer42]

If the code produces an error, then what do you mean by "working perfectly"?

Presumably it's line 6 that produces the error? If so, then I guess you're looking for the file in the wrong directory. Try specifying the full path to the file.

[QVeen72]

Hi,

You have hard-coded the message.
Catch the actual Exception message. Change your code this way, and check ..

[code=vbnet]
Try
vinStreamreader = New StreamReader("c ar.txt")
DisplayRecord()
Catch ex As Exception
MessageBox.Show (ex.Message)
End Try
[/code]


Regards
Veena

[pooker75]

I did what you said but it just generates another error message that I don't know how to fix. Please advise if you have any ideas how to fix so I don't get an error message.

[pooker75]

If the code produces an error, then what do you mean by "working perfectly"?

Presumably it's line 6 that produces the error? If so, then I guess you're looking for the file in the wrong directory. Try specifying the full path to the file.

If I click ok on the message, the program proceeds to run just fine. I just need to get rid of the first error message that pops. The file is there and does not need the full file location to read. I just need the code to get rid of that error message. I tried changing file not found to ex.message but that just generates another error message that I can't fix.

[Killer42]

... I tried changing file not found to ex.message but that just generates another error message that I can't fix.

I think we need to know the details of the error that is generated.

[pooker75]

I think we need to know the details of the error that is generated.

It says "Value cannot be null; Parameter Name: Item

[Killer42]

It says "Value cannot be null; Parameter Name: Item

Exactly where is it reporting this error? On the New StreamReader? If so, check out the Item parameter, since it apparently needs a value.