designer-debug-mode.md

Detecting Designer Mode

Component.DesignMode Property

[System.ComponentModel.Browsable(false)]
protected bool DesignMode { get; }

bool isDesignMode = Process.GetCurrentProcess().ProcessName == "devenv";

bool isDesignMode = DesignerProperties.GetIsInDesignMode(this);

bool isDesignMode = LicenseManager.UsageMode == LicenseUsageMode.Designtime;

Detecting Debug Mode

if (Debugger.IsAttached) {}