Custom properties for visual webpart
You should read 3 article first
http://mstechsharing.blogspot.com/2012/03/lesson-04-webpart-property-and-default.html
http://mstechsharing.blogspot.com/2012/03/lesson-05-more-attribute-and-custom.html
http://mstechsharing.blogspot.com/2012/03/lesson-06-validation-in-webpart-and.html
Create new Visual webpart project
Add new class for toolpart class
Open CustomPropertiesForVisualWebpart.cs and Replace...
