Small File Input Problem

[Steve25]

I'm trying to make a simple program where a text file is read in and it prints the text in a textbox and the number of lines in the file. I cant get the number of lines to come up OK and get the file to display in the textbox. However I cannot get the program to do both these things in one program. Here is my code so far:

if (openFile.ShowDialog() == DialogResult.OK)
            {
                //Create variable for storing the number of lines
                int lines = 0;
                string fileName = openFile.FileName;
                StreamReader objReader = new StreamReader(fileName);
                //Loop until we reach the end of the file and increase the line count
                while (objReader.ReadLine() != null)
                {
                    lines++;
                }
                //Print the contents of the file to the textbox
                txtFile.Text = objReader.ReadToEnd();
                lblLines.Text = lines.ToString();
                objReader.Close();
            }