Viewing: Read Data from a file

I have created a small application by which you can read from a file and display the contents of the file onto the browser.
There are ways of reading the opened file like:
streamReaderObj.Read()
Reads the stream character-wise. It returns an integer value equal to the ASCII equivalent of the character read. This is also used in reading the Binary Stream Input. If the end-of-file is reached then it returns -1.
streamReaderObj.ReadLine()
Reads a line of characters from the current stream and returns the data as a string. if end of stream is reached then it returns Null of "".
streamReaderObj.ReadBlock(buffer, index, count)
Reads data from the stream. The difference in this method is that the readblock method reads data bytes equal the number specified by 'count' into 'buffer' starting from the 'index' position in the 'buffer'
streamReaderObj.ReadToEnd()
Reads the data from the current stream position to the end of stream.