MVC3正则表达式Designer.cs

Question

在MVC3中采用数据库第一种方法，我的所有模型都被创建并存储在designer.cs

中

在下面的代码中，我想强制NDC属性的正则表达式验证。输入需要类似于1234-1234-12或4位数字，短划线4位数，短划线2位数。

public partial class Drug : EntityObject

{
    #region Factory Method

    [EdmScalarPropertyAttribute(EntityKeyProperty=true, IsNullable=false)]
    [DataMemberAttribute()]
        public global::System.String NDC
    {
        [Required(ErrorMessage = "Please enter the Rx NDC")]
        [RegularExpression(@"\d\d\d\d-\d\d\d\d-\d\d", ErrorMessage = "Please enter a correctly formatted NDC")]

        get
        {
            return _NDC;
        }
        set
        {
            if (_NDC != value)
            {
                OnNDCChanging(value);
                ReportPropertyChanging("NDC");
                _NDC = StructuralObject.SetValidValue(value, false);
                ReportPropertyChanged("NDC");
                OnNDCChanged();
            }
        }
    }I dont know how to apply the code above in the code below because I get the this error:

错误13属性“必需”在此声明类型上无效。它仅对'property，indexer，field，param'声明有效。 C：\ Users \ Daniel \ Desktop \ 320Final -Updated \ 320Final \ Models \ DBModel.Designer.cs

Answer 1

您正在尝试设置属性内的属性：

public global::System.String NDC
{
    [Required(ErrorMessage = "Please enter the Rx NDC")]
    [RegularExpression(@"\d\d\d\d-\d\d\d\d-\d\d", ErrorMessage = "Please enter a correctly formatted NDC")]
    get
    {
        return _NDC;
    }
...

您需要在属性本身上设置它们：

[Required(ErrorMessage = "Please enter the Rx NDC")]
[RegularExpression(@"\d\d\d\d-\d\d\d\d-\d\d", ErrorMessage = "Please enter a correctly formatted NDC")]
public global::System.String NDC
{
    get
    {
        return _NDC;
    }
....