Question

is there a way to make an enum value not browsable to combo box
or just, not to come back from Enum.GetValues() ??

public enum DomainTypes  
{  
    [Browsable(true)]  
     Client = 1,  
    [Browsable(false)]  
    SecretClient = 2,    
} 

Answer 1

There is nothing already in place to do this for you with the Enum.GetValues() method. If you want to use attributes, you can create your own custom attribute and use it via reflection:

public class BrowsableAttribute : Attribute
{
  public bool IsBrowsable { get; protected set; }
  public BrowsableAttribute(bool isBrowsable)
  {
    this.IsBrowsable = isBrowsable;
  }
}

public enum DomainTypes  
{  
    [Browsable(true)]  
     Client = 1,  
    [Browsable(false)]  
    SecretClient = 2,    
} 

And then you can use reflection to check for custom attributes and generate a list of Enums based on the Browsable attribute.