关闭saveFileDialog

Question

我在关闭saveFileDialog时遇到问题。当我单击“取消”时，窗口再次出现。下面是我的代码：

        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

您将调用saveFileDialog1.ShowDialog()两次，一次用于显示结果，另一次用于获取结果。你只需要调用它一次。删除写着“saveFileDialog1.ShowDialog();本身，您已经在if条件中这样做了”的代码行。

编辑:您还需要将所有FileStream操作移动到else块中，以便在删除该行后使其正常工作。以下是我编辑后的版本：

    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();
    }
}

您也可以完全跳过FileStream，只执行一个File.WriteAlltext(saveFileDialog1.FileName, richTextBox1.Text)。