Need Help WIth this error

Question

3.00/5 (1 vote)

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VS2010

VB

Dim sfd As New SaveFileDialog
            sfd.Filter = "Text Document (.txt)|*.txt"
            Dim sv As String
            sfd.ShowDialog()
            sv = sfd.FileName
            Dim sw As New StreamWriter(sv) <---ERROR HERE
                sw.Write(RichTextBox1.Text)
            sw.Close()

the error that pops up
{"Empty path name is not legal."}
I'm using vs 2010 Express

Posted 20-Sep-14 5:33am

Tariq Carrim

Updated 20-Sep-14 5:38am

Aarti Meswania

v2

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George Jonsson · Answer 1 · 2014-09-20T06:03:00

You should check the return value of ShowDialog and only look do something if the return value means that the user has pressed OK.
The user can also cancel the operation and then sfd.FileName will be empty.

VB

if (sfd.ShowDialog() == DialogResult.OK) // Sorry for the c# syntax
{
    Dim sw As New StreamWriter(sfd.FileName)
    sw.Write(RichTextBox1.Text)
    sw.Close()
}

CPallini · Answer 2 · 2014-09-20T06:13:00

Solution 2

The message is clear: sv is an empty string (while it must contain a valid path name).
You have to properly handle such scenarios (for instance when the user clicks on the SaveFileDialog's 'Cancel' button).

Posted 20-Sep-14 6:13am

CPallini

Comments

Sergey Alexandrovich Kryukov 20-Sep-14 14:14pm

5ed.
—SA

CPallini 20-Sep-14 16:22pm

Thank you, Sergey.