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copied!<p>The problem is that, using the method, you cannot save the content of a RichTextBox in the PDF format.</p> <p>Here you can find the currently available stream format types the can be used: <a href="http://msdn.microsoft.com/en-us/library/system.windows.forms.richtextboxstreamtype.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/system.windows.forms.richtextboxstreamtype.aspx</a>.</p> <p>As you see, the main supported type is RTF (Rich Text Format), a plain-text multi-platform format: this is very different from PDF. Look <a href="http://it.wikipedia.org/wiki/Rich_Text_Format" rel="nofollow">here</a> and <a href="http://it.wikipedia.org/wiki/Portable_Document_Format" rel="nofollow">here</a>.</p> <p><strong>EDIT:</strong> I just answer to the questioneer's comment asking for some helping code:</p> <pre><code>// This method opens a dialog and save the content of the passed RichTextBox private bool ShowRichTextBoxSaveDialog(RichTextBox richTextBox) { SaveFileDialog newFileDialog = new SaveFileDialog(); newFileDialog.Filter = "PDF Files|*.pdf"; newFileDialog.Title = "Save As..."; newFileDialog.Filter = "*.pdf"; // If the user confirm the dialog window... if (newFileDialog.ShowDialog() == DialogResult.OK) { try { richTextBox.SaveFile(newFileDialog.FileName, RichTextBoxStreamType.PlainText); // Success! return true; } catch(Exception e) { // Error during saving! MessageBox.Show(String.Concat("Error during saving: ", e.Message)); return false; } } else // Aborted by the user! return false; } private void button3_Click(object sender, EventArgs e) { // NEXT WILL SHOW UP 4 DIALOGS, FOR ASKING THE USER 4 FILES TO SAVE! this.ShowRichTextBoxSaveDialog(richTextBox1); this.ShowRichTextBoxSaveDialog(richTextBox3); this.ShowRichTextBoxSaveDialog(richTextBox4); // HERE I ALSO CHECK IF THE SAVING IS SUCCESSFUL.. if (this.ShowRichTextBoxSaveDialog(richTextBox5)) MessageBox.Show("Success in saving :)"); else MessageBox.Show("Failure in saving :("); } </code></pre>

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