winforms - Can't get windows narrator to read message box content

I have a simple message box:

MessageBox.Show(this, "bla 开发者_JS百科bla bla", "banana man", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1, options);

And for some reason I don't manage to get the windows narrator to read its content ("bla bla bla"). Any idea how I can solve this?

Thanks, Li

Narrator is a very basic screen reader and not intelligent enough for many cases. I am not sure whether it is possible at all to support narrator to read this. This may give you more details.

See here if it helps you.