需要帮助解决此错误

问题描述

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()

弹出的错误

{空路径名称不合法。}

我正在使用vs 2010 Express

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

推荐答案

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

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