如果文件已经存在，该如何覆盖文件？

发布于 2025-01-23 08:36:59 字数 552 浏览 1 评论 0原文

我正在使用FastColoredTextbox制作文本编辑器。我有一个按钮，可让您将文本保存到PC上。问题在于，当用户试图将文件保存为已经存在的文件而不是覆盖文件时，它会引发异常。

这是我的代码。

SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "txt|*.txt|All files|*.*";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
    using (Stream s = File.Open(saveFileDialog1.FileName, FileMode.CreateNew))
    using (StreamWriter sw = new StreamWriter(s))
    {
        sw.Write(fastColoredTextBox1.Text);
    }
}

如果文件已经存在，我该如何使其覆盖该文件？

原文

I'm making a text editor using fastColoredTextbox. I have a button that allows you to save your text onto your pc. The problem is that it throws an exception when the user tries to save the file as a file that already exists, instead of overwriting the file.

This is my code.

SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "txt|*.txt|All files|*.*";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
    using (Stream s = File.Open(saveFileDialog1.FileName, FileMode.CreateNew))
    using (StreamWriter sw = new StreamWriter(s))
    {
        sw.Write(fastColoredTextBox1.Text);
    }
}

How would I go about making it overwrite the file if it already exists?

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

南街女流氓 2025-01-30 08:36:59

也许这可以帮助您：

sw = new StreamWriter(path, true);
sw.WriteLine(line);

https://learn.microsoft.com/es-es/es-es/dotnet/api/api/system.io.io.streamwriter.-ctor.-ctor?view=net-6.0 ＃System-io-streamwriter-ctor（System-string-System-boolean）

Maybe this could help you:

sw = new StreamWriter(path, true);
sw.WriteLine(line);

https://learn.microsoft.com/es-es/dotnet/api/system.io.streamwriter.-ctor?view=net-6.0#system-io-streamwriter-ctor(system-string-system-boolean)

回复收藏 0 原文

半窗疏影 2025-01-30 08:36:59

我稍微更改了代码，最终将其处理过，以某种方式使它起作用。

SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "txt|*.txt|All files|*.*";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
    Stream s = saveFileDialog1.OpenFile();
    StreamWriter sw = new StreamWriter(s);
    sw.Write(fastColoredTextBox1.Text);
    sw.Close();
}

I changed up my code a bit and ended up going with this, which somehow got it to work.

SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "txt|*.txt|All files|*.*";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
    Stream s = saveFileDialog1.OpenFile();
    StreamWriter sw = new StreamWriter(s);
    sw.Write(fastColoredTextBox1.Text);
    sw.Close();
}

回复收藏 0 原文

~没有更多了~