Please help me with code for inserting images from files into Oracle Long Raw colums using C# application.

I tried but can insert only images with length less than or equal to 8000 byes.

First, if you are using .bmp files, convert them to .jpg or .gif format, and substantially reduce the space required, and time needed to display. Second, put your images in a directory by themselves, for easy maintenance, and store the \path\filename in the oracle table. The \path need not be accessible to users, only to your C# frontend.