DoubleBuffered versus SetStyle

Question

I am getting conflicting Google results and I wondered if this can be clarified please?

I have:

typeof(TableLayoutPanel)
   .GetProperty("DoubleBuffered",
      System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance)
    .SetValue(tableLayoutPanel, true, null);

typeof(TableLayoutPanel)
    .GetMethod("SetStyle",
      System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic)
      .Invoke(tableLayoutPanel, new object[] { ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint, true });

But I have been told that if I set DoubleBuffered to true that I do not need to manually set the 3 styles as the system will do that internally. At the moment I am calling both.

Answer 1

From the Reference Source here's the implementation of the DoubleBuffered property:

protected virtual bool DoubleBuffered {
    get {
        return GetStyle(ControlStyles.OptimizedDoubleBuffer);
    }
    set {
        if (value != DoubleBuffered) {
            if (value) {
                SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint, value);
            }
            else {
                SetStyle(ControlStyles.OptimizedDoubleBuffer, value);
            }
        }
    }
}

(Note that the property is inherited, so you have to go back to the Control class to find it.)