Many a times there are a large number of constructors for a type in the .net framework. For example the System.IO.FileStream class has 15 constructors as shown to me by Visual Studio Intellisense. Now by default always the first overload of the constructor is shown. Now if I enter a parameter which is a string and then press , to enter the next parameter I should be shown only those overloads which have string as the first parameter. in case of the FileStream if I first entered string(which is the file path) then show only those constructors which have the first parameter as filePath