C#

DataGridTableStyle style = new DataGridTableStyle();
style.MappingName = "MyTableName";  // Name of the DataTable
DataGridColumnStyle colStyle = new DataGridTextBoxColumn();
colStyle.Width = 85;
colStyle.NullText = "";
colStyle.MappingName = "Column1";  // Name of the column in the DataTable
colStyle.HeaderText = "First Name";  // This will be displayed as the column header
style.GridColumnStyles.Add(colStyle);
dataGrid1.TableStyles.Add(style);

private void ReadFromPort()
{
  string value = value from port;
  if (text1.InvokeRequired)
  {
    // This isn't really optimized, but it's only an example...
    Type t = text1.GetType();
    MethodInfo info = t.GetProperty("Text").GetSetMethod();
    Delegate d = Delegate.CreateDelegate(t, info);
    text1.Invoke(d, new object[] {value});
  }
  else text1.Text = value;
}

private delegate void SetTextDelegate(TextBox tb, string text);

private void ReadFromPort(TextBox tb)
{
       string portData = ... // read from communications port

       this.SetText(tb, portData);
}

private void SetText(TextBox tb, string text)
{
	if(tb.InvokeRequired) // if we're calling from any thread other than the one used to create the text box
	{
		tb.Invoke(new SetTextDelegate(SetText), new object[] {tb, text});
	}
	else tb.Text = text; // no invoke required
}

this.SetStyle(ControlStyles.DoubleBuffer | ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint, true);