How to fix incorrect saving of text from RichTextBox to RTF file?

Question

.NET

Saving text from the RichTextBox component to an RTF file does not work correctly. What is interesting: when stepping through the code, saving is performed, but during a normal launch it is not (the file is empty). What could be the problem?

if (richTextBoxWrite.Text != null)
            {
                SaveFileDialog sfd = new SaveFileDialog();
                // sfd.Filter = "RTF files|*.rtf";
                sfd.Filter = "txt files (*.rtf) | *.rtf | All files(*.*) | *.*";
                if ((sfd.ShowDialog() == DialogResult.OK) && (sfd.FileName.Length > 0))
                {
                    string filename = sfd.FileName;
                    richTextBoxWrite.SaveFile(filename, RichTextBoxStreamType.RichText);
                }
            }

Answer 1

Try replacing the first condition with:

if (!string.IsNullOrWhiteSpace(richTextBoxWrite.Text)) {
                ....
        }