open a c file, cpp file, java files and csharp files using opendialog?

[poringgunner]

i cant open any other file extension except text file. i want to put all text of the files inside the richtextbox. but it does'nt appear on richtextbox.
but when i browse a text file, the text inside the files are appear on richtextbox.


please help

 

[jmcilhinney]

Obviously you are doing something wrong. If we don't know what you're doing, we can't possibly know what's wrong with it. In short, show us the code.

 

[rudalboy09]

maybe you wrong about filter in opendialog.