Error when opening text file

[Aphrite]

Ok so I have a program that can save user's input into a text file and load it back, but whenever I try to open the file and exit without selecting the file I get an error.(if i select the file and open it i don't get any errors).

this is the code that handles text file loading

Private Sub Button4_Click(sender As System.Object, e As System.EventArgs) Handles Button4.Click
        OpenFileDialog1.InitialDirectory = "C:\"
        OpenFileDialog1.Filter = "Text Files ONLY (*.txt) | *.txt"
        OpenFileDialog1.ShowDialog()
        Dim loader As New IO.StreamReader(OpenFileDialog1.FileName)
        TextBox1.Text = loader.ReadLine
        TextBox2.Text = loader.ReadLine
        TextBox3.Text = loader.ReadLine
        TextBox4.Text = loader.ReadLine
        TextBox5.Text = loader.ReadLine
        TextBox6.Text = loader.ReadLine
        TextBox7.Text = loader.ReadLine
        TextBox8.Text = loader.ReadLine
        TextBox9.Text = loader.ReadLine
        TextBox10.Text = loader.ReadLine
        TextBox11.Text = loader.ReadLine
        TextBox12.Text = loader.ReadLine
        TextBox13.Text = loader.ReadLine
        TextBox14.Text = loader.ReadLine
        TextBox16.Text = loader.ReadLine
        TextBox57.Text = loader.ReadLine
        loader.Close()
    End Sub

the error is :"FileNotFoundException was unhandled. Could not find file at xxx"
also I would like to know how to make it so that the initial file name for file saving is today's date.
I do not get any errors when I try to save the file, please help :(

[adam_k]

The openfiledialog can return a filename, but doesn't have to as you've figured out by cancelling the dialog. The way you've coded this you expect always to get a filename out of openfiledialog.

If you check here: http://msdn.microsoft.com/en-us/library/system.windows.forms.openfiledialog.aspx you'll find an example in the bottom of the page using

If openFileDialog1.ShowDialog() = System.Windows.Forms.DialogResult.OK Then
'Some code here
end if

to verify that the dialog hasn't been cancelled or closed before proceeding to work with the file.

[Jx_Man]

Or you can check the length of filename.

If OpenFileDialog1.FileName.Length > 0 Then
    Dim loader As New IO.StreamReader(OpenFileDialog1.FileName)
    TextBox1.Text = loader.ReadLine
    TextBox2.Text = loader.ReadLine
    ...
    loader.Close()
End If

[Aphrite]

Thanks guys, now to my 2nd question, how do i change the initial filename to today's date?

SaveFileDialog1.InitialDirectory = "C:\"
SaveFileDialog1.FileName = "TODAYS DATE"
SaveFileDialog1.Filter = "Text Files ONLY (*.txt) | *.txt"

i.e today is 18 jan 2012 so i want "TODAYS DATE" to be 18-01-2012 and if the program is run again tomorrow it would be 19-01-2012.

[Jx_Man]

Try this :

SaveFileDialog1.FileName = Date.Now

[Aphrite]

Try this :

SaveFileDialog1.FileName = Date.Now

using your code i get a new error:
NotSupportedException was unhandled - The given path format is not supported.

Private Sub Button3_Click(sender As System.Object, e As System.EventArgs) Handles Button3.Click
        SaveFileDialog1.InitialDirectory = "C:\"
        SaveFileDialog1.FileName = Date.Now
        SaveFileDialog1.Filter = "Text Files ONLY (*.txt) | *.txt"
        SaveFileDialog1.ShowDialog()
        Dim saver As New IO.StreamWriter(SaveFileDialog1.FileName)
        saver.WriteLine(TextBox1.Text)
        saver.WriteLine(TextBox2.Text)
        saver.WriteLine(TextBox3.Text)
        saver.WriteLine(TextBox4.Text)
        saver.WriteLine(TextBox5.Text)
        saver.WriteLine(TextBox6.Text)
        saver.WriteLine(TextBox7.Text)
        saver.WriteLine(TextBox8.Text)
        saver.WriteLine(TextBox9.Text)
        saver.WriteLine(TextBox10.Text)
        saver.WriteLine(TextBox11.Text)
        saver.WriteLine(TextBox12.Text)
        saver.WriteLine(TextBox13.Text)
        saver.WriteLine(TextBox14.Text)
        saver.WriteLine(TextBox16.Text)
        saver.WriteLine(TextBox57.Text)
        saver.Close()
    End Sub

[Aphrite]

Nevermind I fixed it with this

DateTime.Now.ToString("MM.dd.yyyy")

Thanks again :D

[Jx_Man]

Yes. Good Job..
I not have compiler installed right now. so i forgot that windows cannot save symbols like "/" as an address.
Don't forget to mark this thread as solved.