Create custom Validation data annotation attribute in ASP.Net MVC

Hi

Below i have 2 Data Annotations for 2 separate fields Id & Description. I want only 1 class for both, Methods should be different.

Is it possible?

[Key]
[Required(ErrorMessage = "Id can not be blank.")]
[StringLength(4, ErrorMessage = "Max length should be less than or equal to 4.")]
[RegularExpression(@"^[a-zA-Z][a-zA-Z ]+$", ErrorMessage = "Special Characters not allowed")]
[Remote("IsExist", "Location", ErrorMessage = "Id already exists")]
[Display(Name = "Id")]
public string Id { get; set; }

[DataType(DataType.Text)]
[Required(ErrorMessage = "Description can not be blank.")]
[StringLength(25, ErrorMessage = "Max length should be less than or equal to 25.")]
[RegularExpression(@"^[a-zA-Z][a-zA-Z ]+$", ErrorMessage = "Special Characters not allowed")]
[Display(Name = "Description")]
public string Description { get; set; } 

Below is for 1 Data Annotation. Can the Annotation for ID can be done in this same class.

So that these can be used separately where required.

   public class DescriptionAttribute : ValidationAttribute  
   {  
       public override bool IsValid(object value)  
       {  
  
           if (  
              new RegularExpressionAttribute(@"^[a-zA-Z][a-zA-Z ]+$") { ErrorMessage = "Special Characters not allowed" }.IsValid(value)  
             && new RequiredAttribute { ErrorMessage = "Description can not be blank." }.IsValid(value)  
               && new StringLengthAttribute(25) { ErrorMessage = "Max length should be less than or equal to 25." }.IsValid(value)  
              && new DataTypeAttribute(DataType.Text).IsValid(value)  
  
               )  
           {  
               return true;  
           }  
           else  
           {  
               return false;  
           }
       }  
   }