How to Prevent Flickering When Frequently Updating a DataGridView?

Update DataGridView frequently without flickering

Question:

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

Analysis:

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

Solution:

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

Subclassing method

Create a subclass of DataGridView and expose the DoubleBuffered property:

<code class="language-csharp">public class DBDataGridView : DataGridView
{
    public new bool DoubleBuffered
    {
        get { return base.DoubleBuffered; }
        set { base.DoubleBuffered = value; }
    }

    public DBDataGridView()
    {
        DoubleBuffered = true;
    }
}</code>

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

Reflection method

Set up DoubleBuffering programmatically using reflection:

<code class="language-csharp">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 });
}</code>

Call SetDoubleBuffer to switch DoubleBuffering of DataGridView.

By enabling DoubleBuffering, the DataGridView will use an off-screen buffer to draw updates, reducing flickering and stuttering during frequent updates.

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