Question

I would like to validate an input from a textbox so that it is integer and in the range of 0-255. I have a small asp.net mvc4 project

Answer 1

Use data annotations: http://www.asp.net/mvc/tutorials/mvc-music-store/mvc-music-store-part-6

[Required(ErrorMessage = "Value must be set")]
[Range(0, 250, ErrorMessage = "Value must be between 0 and 250")]
public int Value{ get; set; }