c#, devexpress - How to use attributes in GridControl (devexpress)

The attributes in the class can be used as metadata for generated GridControl (devexpress) columns. 

Class for rows:

public enum TypeEnum {
   [Display(Name = "Type is expression.")]  
   EXPRESSION = 0,
   [Display(Name = "Type is operator.")]  
   OPERATOR = 1
}    

public class TmpParent
{            
   [Display(
     ShortName = "Company", 
     Name = "Company Name", 
     Description = "The amount of currently available product", 
     AutoGenerateFilter = false)
   ]
  public string str1 { get; set; }
  [DataType(DataType.Text), StringLength(20, MinimumLength = 3)]
  public string str2 { get; set; }
  public bool bool1 { get; set; }
  public TypeEnum enum1 { get; set; }
  [DisplayFormat(DataFormatString = "MMMM/yyyy")]
  public DateTime date1 { get; set; }
  [DisplayFormat(DataFormatString = "p", ApplyFormatInEditMode = true)]
  public float value1 {  get; set; }
  [DataType(DataType.Currency), Range(200, 5000), Required]    
  public float value2 { get; set; }
        
   public TmpParent( string _s1, string _s2, bool _b, TypeEnum _enum = TypeEnum.EXPRESSION )
   {
     str1 = _s1;
     str2 = _s2;
     bool1 = _b;
     enum1 = _enum;
     date1 = DateTime.Now;
     value1 = 100.1f;
     value2 = 300.5f;
   }
}

Grid fillings:

var p = new TmpParent( "A", "A", true );
list.Add( p );
list.Add( new TmpParent( "B", "B", false, TypeEnum.OPERATOR ) );
list.Add( new TmpParent( "C", "C", true ) );
list.Add( new TmpParent( "D", "D", false ) );

gridParent.DataSource = list;

Output: