private void Button1Click(object sender, EventArgs e)
{
#region Invoke Help
string helpFilePath = GetHelpFilePath();
XmlSchemaSet schemaSet = GetXmlSchemaSet();
XmlSchemaElement element = GetSelectedElement(schemaSet);
string keyword = schemaSet.GetHelpKeyword(element);
Help.ShowHelp(this, helpFilePath, HelpNavigator.KeywordIndex, keyword);
#endregion
}