如何在RTF文本框中保存打开的文件

Question

txt file in my richtextbox and want to save the orginal file rather than save a new file (SaveAs). here is my code for saving the file

private void SaveMyFile_Click(object sender, EventArgs e)
    {

        SaveFileDialog saveFile1 = new SaveFileDialog();
        saveFile1.DefaultExt = "*.rtf";
        saveFile1.Filter = "RTF Files|*.rtf";          
        if (saveFile1.ShowDialog() == System.Windows.Forms.DialogResult.OK &&
        saveFile1.FileName.Length > 0)
        {
          richTextBox1.SaveFile(saveFile1.FileName, RichTextBoxStreamType.PlainText);
        }

    }

any help pleaseeee

Answer 1

Are you saying that you should don't want to present the dialog? If so, just save the filename and save using that:

richTextBox1.SaveFile(_filename, RichTextBoxStreamType.PlainText);

Answer 2

打开文件时，只需保存文件路径即可。然后丢失所有SaveFileDialog内容，然后调用richTextBox1.SaveFile（the_path_you_saved_when_you_opened_the_file）;

Answer 3

Just save the original path to the file that was read into the textbox. When the user clicks the button to save, use the following code:

richTextBox1.SaveFile(filename, RichTextBoxStreamType.PlainText);

Where filename is the variable you stored the original path to the file opened.

Answer 4

This is the code that it sounds like you want:

String fileLocation;
private void SaveMyFile_Click(object sender, EventArgs e)
{
    var performSave = true;
    if(String.IsNullOrEmpty(fileLocation))
    {
        performSave = SetFileLocation();
    }
    if(performSave)
        richTextBox1.SaveFile(fileLocation, RichTextBoxStreamType.PlainText);

}

private bool SetFileLocation()
{
        SaveFileDialog saveFile1 = new SaveFileDialog();
        saveFile1.DefaultExt = "*.rtf";
        saveFile1.Filter = "RTF Files|*.rtf";          
        if (saveFile1.ShowDialog() == System.Windows.Forms.DialogResult.OK &&
        saveFile1.FileName.Length > 0)
        {
          fileLocation = saveFile1.FileName;
          return true;
        }
        return false;
}

Answer 5

You should try adding the file name or FileInfo from which the rich text is loaded from. If the file has not been saved, prompt to save the file. Otherwise, save to the file info cached.

partial class YourForm : Form
{
    string filePath;

    private void SaveMyFile_Click(object sender, EventArgs e)
    {
        if (string.IsNullOrEmpty(filePath))
        {
            SaveFileDialog saveFile1 = new SaveFileDialog();
            saveFile1.DefaultExt = "*.rtf";
            saveFile1.Filter = "RTF Files|*.rtf";          
            if (saveFile1.ShowDialog() == System.Windows.Forms.DialogResult.OK &&
                saveFile1.FileName.Length > 0)
            {
                filePath = saveFile1.FileName;
            }
            else return;
        }

        try
        {
            richTextBox1.SaveFile(filePath, RichTextBoxStreamType.PlainText);
        }
        catch (Exception ee)
        {
            // Put exception handling code here
        }
    }
}

As per comment below, if you'd like a save as button, you can try the following:

partial class YourForm : Form
{
    Button saveFileAsButton; // Add this using the Forms Designer

    private void saveFileAsButton_Click(object sender, EventArgs e)
    {
        SaveFileDialog saveFile1 = new SaveFileDialog();
        saveFile1.DefaultExt = "*.rtf";
        saveFile1.Filter = "RTF Files|*.rtf";          
        if (saveFile1.ShowDialog() == System.Windows.Forms.DialogResult.OK &&
            saveFile1.FileName.Length > 0)
        {
            try
            {
                richTextBox1.SaveFile(saveFile1.FileName, RichTextBoxStreamType.PlainText);
                filePath = saveFile1.FileName;
            }
            catch (Exception ee)
            {
                // Put exception handling code here (e.g. error saying file cannot be saved)
            }
        }
    }
}

Note how the setting of filePath is in the try block. In case the save failed, you don't want to lose your original file path.

If you form has a MenuStrip , I recommend moving the save functions into the menus.

(BTW, the type name for RTF in your filter would be better as " Rich Text Document ".)