WinForms: Flickering Issue with Custom Control During Resize Events
I'm having a hard time understanding I'm stuck on something that should probably be simple... I've searched everywhere and can't find a clear answer... I'm encountering a flickering issue with my custom control in a WinForms application when the form is resized. The control is designed to render a dynamic graph based on user input, and while resizing the form, it seems to undergo several repaint cycles that lead to a visible flicker of the control. I've tried overriding the OnPaint and OnPaintBackground methods to optimize rendering, but the flickering persists. Here's a snippet of my custom control class: ```csharp public class GraphControl : Control { protected override void OnPaintBackground(PaintEventArgs e) { // Prevent flickering // No background painting to avoid flicker } protected override void OnPaint(PaintEventArgs e) { // Custom drawing logic for the graph e.Graphics.Clear(Color.White); // Drawing graph logic here... } } ``` I'm also calling `Invalidate()` on the control during resize, like so: ```csharp private void Form1_Resize(object sender, EventArgs e) { myGraphControl.Invalidate(); // Triggers repaint } ``` Additionally, I set the DoubleBuffered property to true: ```csharp public GraphControl() { this.DoubleBuffered = true; } ``` Despite these efforts, the flickering remains noticeable, especially when resizing the form quickly. I'm using .NET Framework 4.8 on Visual Studio 2019. Could there be any other strategies or configurations I might be missing to completely eliminate this flicker? Any insights or best practices would be greatly appreciated! I'd really appreciate any guidance on this. I'm working with C# in a Docker container on CentOS. My development environment is Windows 10. Could someone point me to the right documentation?