C# 尝试在不使用SaveFileDialog的情况下保存文件

我正在创建一个文本编辑器，我被困在SaveFileDialog窗口的打开状态 并请求覆盖当前打开的文件

我已经看到了所有类似的问题都是这样问的，但是没有一个能够帮助我。我甚至试过这个问题的代码：不用对话框保存文件

我的程序文件名有问题，我被卡住了

这是我目前拥有的代码

namespace Text_Editor
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void newToolStripMenuItem_Click(object sender, EventArgs e)
        {
            richTextBox1.Clear();
        }

        private void openToolStripMenuItem_Click(object sender, EventArgs e)
        {
            OpenFileDialog open = new OpenFileDialog();

            open.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
            open.Title = "Open File";
            open.FileName = "";

            if (open.ShowDialog() == DialogResult.OK)
            {
                this.Text = string.Format("{0}", Path.GetFileNameWithoutExtension(open.FileName));
                StreamReader reader = new StreamReader(open.FileName);
                richTextBox1.Text = reader.ReadToEnd();
                reader.Close();
            }
        }

        private void exitToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private void saveToolStripMenuItem_Click(object sender, EventArgs e)
        {
            SaveFileDialog save = new SaveFileDialog();

            save.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
            save.Title = "Save File";

            save.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

            if (save.ShowDialog() == DialogResult.OK)
            {
                StreamWriter writer = new StreamWriter(save.FileName);
                writer.Write(richTextBox1.Text);
                writer.Close();
            }
        }

        private void saveAsToolStripMenuItem_Click(object sender, EventArgs e)
        {
            SaveFileDialog saving = new SaveFileDialog();

            saving.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

            saving.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
            saving.Title = "Save As";
            saving.FileName = "Untitled";

            if (saving.ShowDialog() == DialogResult.OK)
            {
                StreamWriter writing = new StreamWriter(saving.FileName);
                writing.Write(richTextBox1.Text);
                writing.Close();
            }
        }

    }
}

因此，我的问题是如何修改代码，以便保存当前打开的文件，而不必每次都打开SaveFile对话框

---

我知道这与我正在调用.ShowDialog有关，但我不知道如何修改它。

您必须存储您已保存文件的事实，例如，将文件名存储在您拥有的类的某个表单中。然后使用if检查是否已保存文件，如果尚未保存或未保存，则使用ShowDialog显示SaveFileDialog，并继续保存到存储在成员变量中的已定义文件名

尝试一下，请执行以下操作：

定义一个字符串成员变量，称之为_filenameprivate string _fileName；在你们班 在saveToolStripMenuItem\u Click方法中，如果null==\u fileName，则检查它是否为null 如果为null，则继续显示对话框之前的操作，并在获取文件名后，将其存储在成员变量中 重构您的文件编写代码，这样您可以像以前一样从文件对话框中获取文件名，或者从您的成员变量\u fileName获取文件名

---

玩得开心，C是一种很好的编程语言。

例如，在类中创建一个新的字符串变量 string filename=string.empty

然后

private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
  if(string.IsNullOrEmpty(filename)) {
 //Show Save filedialog
    SaveFileDialog save = new SaveFileDialog();

    save.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
    save.Title = "Save File";

    save.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

    if (save.ShowDialog() == DialogResult.OK)
    {
        filename = save.FileName;

    }
   }
   StreamWriter writer = new StreamWriter(filename);
        writer.Write(richTextBox1.Text);
        writer.Close();
}

---

保存文件对话框现在仅在文件名为null或空时打开

打开文件时，将文件名保存在表单级变量或属性中

现在，在保存文件时，您可以使用此文件名，而不是从FileOpenDialog获取它

首先声明一个变量以在表单级别保存文件名

// declare at form level
private string FileName = string.Empty;

打开文件时，将文件名保存在此变量中

private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
    OpenFileDialog open = new OpenFileDialog();

    open.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
    open.Title = "Open File";
    open.FileName = "";

    if (open.ShowDialog() == DialogResult.OK)
    {
        // save the opened FileName in our variable
        this.FileName = open.FileName;
        this.Text = string.Format("{0}", Path.GetFileNameWithoutExtension(open.FileName));
        StreamReader reader = new StreamReader(open.FileName);
        richTextBox1.Text = reader.ReadToEnd();
        reader.Close();
    }
}

private void saveAsToolStripMenuItem_Click(object sender, EventArgs e)
{
    SaveFileDialog saving = new SaveFileDialog();

    saving.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

    saving.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
    saving.Title = "Save As";
    saving.FileName = "Untitled";

    if (saving.ShowDialog() == DialogResult.OK)
    {
        // save the new FileName in our variable
        this.FileName = saving.FileName;
        StreamWriter writing = new StreamWriter(saving.FileName);
        writing.Write(richTextBox1.Text);
        writing.Close();
    }
}

private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
    // clear the FileName
    this.FileName = string.Empty;
    richTextBox1.Clear();
}

在执行SaveAs操作时，更新此变量

private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
    OpenFileDialog open = new OpenFileDialog();

    open.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
    open.Title = "Open File";
    open.FileName = "";

    if (open.ShowDialog() == DialogResult.OK)
    {
        // save the opened FileName in our variable
        this.FileName = open.FileName;
        this.Text = string.Format("{0}", Path.GetFileNameWithoutExtension(open.FileName));
        StreamReader reader = new StreamReader(open.FileName);
        richTextBox1.Text = reader.ReadToEnd();
        reader.Close();
    }
}

private void saveAsToolStripMenuItem_Click(object sender, EventArgs e)
{
    SaveFileDialog saving = new SaveFileDialog();

    saving.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

    saving.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
    saving.Title = "Save As";
    saving.FileName = "Untitled";

    if (saving.ShowDialog() == DialogResult.OK)
    {
        // save the new FileName in our variable
        this.FileName = saving.FileName;
        StreamWriter writing = new StreamWriter(saving.FileName);
        writing.Write(richTextBox1.Text);
        writing.Close();
    }
}

private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
    // clear the FileName
    this.FileName = string.Empty;
    richTextBox1.Clear();
}

然后可以按如下方式修改保存功能：

private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
    if (string.IsNullOrEmpty(this.FileName))
    {
        // call SaveAs 
        saveAsToolStripMenuItem_Click(sender, e);
    } else {
        // we already have the filename. we overwrite that file.
        StreamWriter writer = new StreamWriter(this.FileName);
        writer.Write(richTextBox1.Text);
        writer.Close();
    }
}

在New and Close函数中，应清除此变量

private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
    OpenFileDialog open = new OpenFileDialog();

    open.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
    open.Title = "Open File";
    open.FileName = "";

    if (open.ShowDialog() == DialogResult.OK)
    {
        // save the opened FileName in our variable
        this.FileName = open.FileName;
        this.Text = string.Format("{0}", Path.GetFileNameWithoutExtension(open.FileName));
        StreamReader reader = new StreamReader(open.FileName);
        richTextBox1.Text = reader.ReadToEnd();
        reader.Close();
    }
}

private void saveAsToolStripMenuItem_Click(object sender, EventArgs e)
{
    SaveFileDialog saving = new SaveFileDialog();

    saving.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

    saving.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
    saving.Title = "Save As";
    saving.FileName = "Untitled";

    if (saving.ShowDialog() == DialogResult.OK)
    {
        // save the new FileName in our variable
        this.FileName = saving.FileName;
        StreamWriter writing = new StreamWriter(saving.FileName);
        writing.Write(richTextBox1.Text);
        writing.Close();
    }
}

private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
    // clear the FileName
    this.FileName = string.Empty;
    richTextBox1.Clear();
}

首先，从SaveAstolStripMenuItem中提取方法。单击：若要添加弹出菜单，请单击“速度”按钮？那就实施吧

  public partial class Form1: Form {
    // File name to save text to  
    private String m_FileName = "";

    private Boolean SaveText(Boolean showDialog) {
      // If file name is not assigned or dialog explictly required
      if (String.IsNullOrEmpty(m_FileName) || showDialog) {
        // Wrap IDisposable into using
        using (SaveFileDialog dlg = new SaveFileDialog()) {
          dlg.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
          dlg.Title = "Save File";
          dlg.FileName = m_FileName;  

          if (dlg.ShowDialog() != DialogResult.OK) 
            return false;

          m_FileName = dlg.FileName;  
        } 
      }

      File.WriteAllText(m_FileName, richTextBox1.Text);

      this.Text = Path.GetFileNameWithoutExtension(m_FileName);

      return true;
    }

    private void saveAsToolStripMenuItem_Click(object sender, EventArgs e) {
      // SaveAs: always show the dialog 
      SaveText(true);
    }

    private void saveToolStripMenuItem_Click(object sender, EventArgs e) {
      // Save: show the dialog when required only
      SaveText(false);
    }
    ...
  }

---

然后不要调用它…所以你想让用户在文本框中输入文件名还是什么？如果你知道文件的路径，就使用它，不要显示对话框。是的，我知道我不能调用它，但我不知道如何修改我的代码以避免调用它。如果用户有一个打开的文本文件，并且他们对其进行了修改，那么当点击save时，应该只保存该文件。没有打开对话框询问必须保存在哪里。Alex我想我理解你的意思。请你详细说明一下好吗