FileDialog.Filter 屬性怎麼寫

每次都忘記都要找，所以直接貼上來，
其實只是內建的說明而已 XD

Text files (*.txt)|*.txt|All files (*.*)|*.*

Image Files(*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF|All files (*.*)|*.*

Excel files (*.xls)|*.xls|All files (*.*)|*.*

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);

        }

    }

}