How to change "The Id field is required" in DropDownList?

[Janko]

I'm using DropDownList in grid as EditorTemplate. If no value is selected I get a message that says "The Id field is required". How to change the message or remove it completely?

[Vasko]

Hi Janko,

Depending what you want - to remove or to change the message - here are the 2 approaches:

• To change it, in your Model, adjust the Required modifier above the properties you want to display a custom message to (see screenshot for end result):  

      public class Calls
      {
          [Required(ErrorMessage="This is a custom validation message")]
          public string? Name { get; set; }
      }

• To remove it completely, remove the Required modifiers above the properties (see gif): 

      public class Calls
      {
          // [Required(ErrorMessage="This is a custom validation message")]
          public string? Name { get; set; }
      }

Kind regards,
Vasko
Progress Telerik