Problem Reading unicode files

Question

Below is the code I am using to attempt to open a text file.  Are there any problems with it?  Every time i run it only the first character of the file is read.  I am attempting to read from unicode .txt files if that makes a difference.

PS:  Ok i just checked only my unicoded .txt files wont open correctly.  Standard .txt files will.

if (openFileDialog1.ShowDialog() != DialogResult.Cancel) 

            { 

                StreamReader fs =new StreamReader( new FileStream(openFileDialog1.FileName, FileMode.OpenOrCreate, FileAccess.Read)); 

                while (fs.Peek() != -1) 

                { 

                    leftBox.Text += fs.ReadToEnd(); 

                } 

                fs.Close(); 

            }