private void button1_Click(object sender, System.EventArgs e)
{
    Stream myStream = null;
    OpenFileDialog openFileDialog1 = new OpenFileDialog();

    openFileDialog1.InitialDirectory = "c:\\" ;
    openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*" ;
    openFileDialog1.FilterIndex = 2 ;
    openFileDialog1.RestoreDirectory = true ;

    if(openFileDialog1.ShowDialog() == DialogResult.OK)
    {
        try
        {
            if ((myStream = openFileDialog1.OpenFile()) != null)
            {
                using (myStream)
                {
                    // Insert code to read the stream here.
                }
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);
        }
    }
}

------解决方案--------------------
http://msdn.microsoft.com/en-us/library/system.windows.forms.openfiledialog_methods.aspx

请问你查出来有 OpenFiles 在哪里？？？

或者你直接说你想用 OpenFiles 做什么？（假设OpenFiles存在）。

------解决方案--------------------

探讨

我也是从msdn上看到的，难道已经废掉了？