RichTextBox.SaveFile

[Andy]

Im trying to save a text file using the following code:

RichTextBox t = new RichTextBox();
t.Text = doc.FocusedDocument.Control.Text;
SaveFileDialog saveFile1 = new SaveFileDialog();
saveFile1.FileName = doc.FocusedDocument.Text;
saveFile1.DefaultExt = "*.txt";
saveFile1.Filter = "Text File|*.txt|RTF Files|*.rtf";
if(saveFile1.ShowDialog() == System.Windows.Forms.DialogResult.OK &&
saveFile1.FileName.Length > 0)
{
t.SaveFile(saveFile1.FileName, RichTextBoxStreamType.UnicodePlainText);
}

When i try to run the program i get the following error:



An unhandled exception of type 'System.NullReferenceException' occurred in
system.windows.forms.dll
Additional information: Object reference not set to an instance of an
object.



I've checked that the richtextbox contains text and the returned filename is
valid.

Any help would be greatly appreciated.

Thanks

Andy

 

[Vanessa]

If you type in "richTextBox" at the C#/MSDN website, you get a wealth of
information.