Need help on Property Grid

Question

Hi All,

I am new to c#.net implementation and i need to implement property grid where few properties are normal ones and few have ellipses and drop down list. All this is implemented and works fine but now i have one more property where on click of the ellipse, form needs to be shown which will have a tree view and based on the selection of nodes comma separated string needs to be set as the property value. Can some one show me some sample code or any kind of help is highly appreciated and Thank you all in Advance.

-Jeevan