Frequently update the DataGridView without flashing

question:

Refresh DataGridView in real time, especially when the update rate is high and the number of cells is large, visual defects such as flickering and lag are prone to occur.

analyze:

Double buffering technology solves these problems by using off-screen buffers.

Solution:

Enable the double buffering function of DataGridView through reflection or subclassing methods.

Subclassing method

Create a subclass of DataGridView, expose the DoubleBuffered property:

public class DBDataGridView : DataGridView
{
    public new bool DoubleBuffered
    {
        get { return base.DoubleBuffered; }
        set { base.DoubleBuffered = value; }
    }

    public DBDataGridView()
    {
        DoubleBuffered = true;
    }
}

Add this class to the project and set DoubleBuffering to true.

Reflection method

Set DoubleBuffering programmatically using reflection:

using System.Reflection;

static void SetDoubleBuffer(Control ctl, bool DoubleBuffered)
{
    typeof(Control).InvokeMember("DoubleBuffered",
        BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.SetProperty,
        null, ctl, new object[] { DoubleBuffered });
}

Call SetDoubleBuffer to switch the DoubleBuffering of DataGridView.

By enabling DoubleBuffering, DataGridView will draw updates using off-screen buffers, reducing flickering and stuttering during frequent updates.