this.richTextBox1.Location = new System.Drawing.Point(21, 28);
this.richTextBox1.Name = "richTextBox1";
this.richTextBox1.Size = new System.Drawing.Size(233, 168);
this.richTextBox1.TabIndex = 0;
this.richTextBox1.Text = "";

static void Main(String []args)
{
String filePath = null;
if (args.Length != 0) {
filePath = args[0];
}
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1(filePath));
}

public partial class Form1 : Form
{
String fp = null;
public Form1(String filePath)
{
fp = filePath;
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
if (fp != null)
{
richTextBox1.LoadFile(fp, RichTextBoxStreamType.PlainText);
}
}
}