This is internal to framework and should not be used in your own applications.

public sealed class DesignTimeVisibleAttribute : Attribute {
// Public Constructors
   public DesignTimeVisibleAttribute();
   public DesignTimeVisibleAttribute(bool visible);
// Public Static Fields
   public static readonly DesignTimeVisibleAttribute Default;  // =System.ComponentModel.DesignTimeVisibleAttribute
   public static readonly DesignTimeVisibleAttribute No;  // =System.ComponentModel.DesignTimeVisibleAttribute
   public static readonly DesignTimeVisibleAttribute Yes;  // =System.ComponentModel.DesignTimeVisibleAttribute
// Public Instance Properties
   public bool Visible{get; }
// Public Instance Methods
   public override bool Equals(object obj);  // overrides Attribute
   public override int GetHashCode();  // overrides Attribute
   public override bool IsDefaultAttribute();  // overrides Attribute
}

Hierarchy

System.Object System.Attribute DesignTimeVisibleAttribute

Valid On

Class, Interface