selfelected

public partial class MyAppForm : System.Windows.Forms.Form
{
protected new bool DesignMode
{
get
{
return HelperMethods.IsDesignMode(this);
}
}
}



public partial class MyAppUserControl : UserControl
{
protected new bool DesignMode
{
get
{
return HelperMethods.IsDesignMode(this);
}
}
}


class HelperMethods
{
public static bool IsDesignMode(System.ComponentModel.Component x)
{
var site = x as System.ComponentModel.ISite;
return
( null == site ? false : site.DesignMode ) ||
System.ComponentModel.LicenseManager.UsageMode == System.ComponentModel.LicenseUsageMode.Designtime ||
System.Diagnostics.Process.GetCurrentProcess().ProcessName == "devenv";
}
}