Hi Vladimir,
Thank you for your interest in Syncfusion products.
In our SfRichTextBoxAdv control, using the ContentChanged event we can able to know
whenever the content in SfRichTextBoxAdv document changes. We have also
mentioned the sample c# code for hooking the ContentChanged event of
SfRichTextBoxAdv. Please find the sample code below.
Sample C# code:
richTextBox.ContentChanged
+= RichTextBox_ContentChanged;
Please let us know if you have any other questions.
Regards,
Arumuga Perumal S.