如何在我的MVC字段中添加验证？

Question

我有以下定义:

public class Menu
{
    [DisplayName("Control")]
    public int Control { get; set; }

像这样使用它:

  @Html.TextBoxFor(x => x.Control, new { id = "control" })

我可以为订单指定一个范围吗？我希望订单是0到999之间的数字.

还有可能让我创建的文本框只有三个字符的空间吗？

Answer 1

Is it possible for me to specify a range for the order? I would like the order to be a number between 0 and 999. 

使用RangeAttribute

[DisplayName("Control")]
[Range(0, 99, ErrorMessage = "{0} must be between {1} and {2}")]
public int Control { get; set; }

对于第二个问题

Also is it possible for me to make the textbox that gets created just have space for three characters?

使用StringLengthAttribute

[StringLength(3, ErrorMessage="{0} must be {1} characters"]
[DisplayName("Control")]
[Range(0, 99, ErrorMessage = "{0} must be between {1} and {2}")]
public int Control { get; set; }

如果需要,您还可以指定minumun chars长度

[StringLength(10, minimumLength=5, ErrorMessage="{0} must be between {1} and {2} characters"]
public int Control { get; set; }