关闭saveFileDialog

Question

我关闭saveFileDialog时遇到问题。当我点击'取消'窗口再次出现。这是我的代码：

        private void SaveAsItem_Click(object sender, EventArgs e)
    {
        saveFileDialog1.FileName = "untitled";
        saveFileDialog1.Filter = "Text (*.txt)|*.txt";
        saveFileDialog1.ShowDialog();
        System.IO.StreamWriter SaveFile = new System.IO.StreamWriter(saveFileDialog1.FileName);
        if (saveFileDialog1.ShowDialog()==DialogResult.Cancel)
        {
            richTextBox1.Text = "CANCEL";
            issaved = false;
        }
        else
        {
            issaved = true;
            SaveFile.WriteLine(richTextBox1.Text);
        }
        SaveFile.Close();
    }

Answer 1

您正在调用saveFileDialog1.ShowDialog()两次，一次显示它，一次调用结果。你只需要调用一次。删除单词saveFileDialog1.ShowDialog();的行，您已经在if条件内执行此操作。

编辑：您还需要移动else块中的所有FileStream操作，以便在删除该行后正常工作。这是我编辑的版本：

    private void SaveAsItem_Click(object sender, EventArgs e)
{
    saveFileDialog1.FileName = "untitled";
    saveFileDialog1.Filter = "Text (*.txt)|*.txt";
    if (saveFileDialog1.ShowDialog()==DialogResult.Cancel)
    {
        richTextBox1.Text = "CANCEL";
        issaved = false;
    }
    else
    {
        System.IO.StreamWriter SaveFile = new System.IO.StreamWriter(saveFileDialog1.FileName);
        issaved = true;
        SaveFile.WriteLine(richTextBox1.Text);
        SaveFile.Close();
    }
}

你也可以完全跳过FileStream而只是File.WriteAlltext(saveFileDialog1.FileName, richTextBox1.Text)。