//https://msdn.microsoft.com/en-us/library/microsoft.office.tools.word.document.selectionchange.aspx
public static void ThisDocument_SelectionChange(object sender, Microsoft.Office.Tools.Word.SelectionEventArgs e)
{
Globals.ThisAddIn._userControlTaskPane.richTextBox1.Text = e.Selection.Text;
Methods _methods = new Methods();
_methods.IsBookmark();
}