EnterpriseLibrary验证(1)添加验证

代码下载：http://dev.mjxy.cn/a-entlib-Adding-Validation.aspx

本演练演示：为商业实体添加验证, 启用验证实例验证。

1. 为要验证的实体添加引用

Microsoft.Practices.EnterpriseLibrary.Validation.dll

System.ComponentModel.DataAnnotations

2.引用命名空间

using Microsoft.Practices.EnterpriseLibrary.Validation.Validators;

3.为实体属性添加验证

using Microsoft.Practices.EnterpriseLibrary.Validation.Validators;

namespace ValidationHOL.BusinessLogic

{

    public class Customer

    {

        [StringLengthValidator(1,25)]

        public string FirstName { get; set; }

        [StringLengthValidator(1,25)]

        public string LastName { get; set; }

        [RegexValidator(@"^\d\d\d-\d\d-\d\d\d\d$")]

        public string SSN { get; set; }

        public Address Address { get; set; }

    }

}

using Microsoft.Practices.EnterpriseLibrary.Validation;

using Microsoft.Practices.EnterpriseLibrary.Validation.Validators;

namespace ValidationHOL.BusinessLogic

{

    public class Address

    {

        [StringLengthValidator(1,50)]

        public string StreetAddress { get; set; }

        [ValidatorComposition(CompositionType.And)]

        [StringLengthValidator(1,30)]

        [ContainsCharactersValidator("sea",ContainsCharacters.All)]

        public string City { get; set; }

        [StringLengthValidator(2,2)]

        public string State { get; set; }

        [RegexValidator(@"^\d{5}$")]

        public string ZipCode { get; set; }

    }

}

4.为程序添加成员变量

 private Validator<Customer> customerValidator;

5.创建验证

private void MainForm_Load(object sender, EventArgs e)

        {

            ValidatorFactory valFactory =

                EnterpriseLibraryContainer.Current.GetInstance<ValidatorFactory>();

            customerValidator = valFactory.CreateValidator<Customer>();

        }

6.验证结果

            ValidationResults results = customerValidator.Validate(customer);

            if (!results.IsValid)

            {

                MessageBox.Show(this, "customer is not alid", "Error", MessageBoxButtons.OK);

                return;

            }