学习微软企业库的心得-验证

1：验证

添加DLL

Microsoft.Practices.EnterpriseLibrary.Validation

System.ComponentModel.DataAnnotations

添加命名空间：

using Microsoft.Practices.EnterpriseLibrary.Validation.Validators;
using Microsoft.Practices.EnterpriseLibrary.Validation;

加验证

public class Customer
    {
        [StringLengthValidator(1, 25)]
        public string FirstName { get; set; }
        [StringLengthValidator(1, 25)]
        public string LastName { get; set; }
        [RegexValidator(@"^ddd-dd-dddd$")]
        public string SSN { get; set; }
        public Address Address { get; set; }
    }

　　

  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; }
    }

　　

主项目加添DLL

Microsoft.Practices.ServiceLocation

Microsoft.Practices.EnterpriseLibrary.Common

Microsoft.Practices.EnterpriseLibrary.Validation

添加命名空间：

using Microsoft.Practices.EnterpriseLibrary.Validation;
using Microsoft.Practices.EnterpriseLibrary.Common.Configuration;

代码：

private Validator<Customer> customerValidator;

        private void MainForm_Load(object sender, EventArgs e)
        {
            ValidatorFactory valFactory = EnterpriseLibraryContainer.Current.GetInstance<ValidatorFactory>();
            customerValidator = valFactory.CreateValidator<Customer>();
        }
        
        private void acceptButton_Click(object sender, EventArgs e)
        {
            Customer customer = new Customer
            {
                FirstName = firstNameTextBox.Text,
                LastName = lastNameTextBox.Text,
                SSN = ssnTextBox.Text,
                Address = new Address
                {
                    StreetAddress = streetAddressTextBox.Text,
                    City = cityTextBox.Text,
                    State = stateComboBox.Text,
                    ZipCode = zipCodeTextBox.Text
                }
            };       
            
            ValidationResults results = customerValidator.Validate(customer);
            if (!results.IsValid)
            {
                MessageBox.Show(
                    this,
                    "Customer is not valid",
                    "Error",
                    MessageBoxButtons.OK,
                    MessageBoxIcon.Error);
                return;
            }

            MessageBox.Show(
                this,
                "Processing customer '" + customer.FirstName + "'",
                "Working",
                MessageBoxButtons.OK,
                MessageBoxIcon.Information);
        }

或

 if (!results.IsValid)
            {
                StringBuilder builder = new StringBuilder();
                builder.AppendLine("Customer is not valid:");
                foreach (ValidationResult result in results)
                {
                    builder.AppendLine(string.Format("{0}: {1}", result.Key, result.Message));
                }
                MessageBox.Show(
                    this,
                    builder.ToString(),
                    "Error",
                    MessageBoxButtons.OK,
                    MessageBoxIcon.Error);
                return;
            }

            MessageBox.Show(
                this,
                "Processing customer '" + customer.FirstName + "'",
                "Working",
                MessageBoxButtons.OK,
                MessageBoxIcon.Information);

　　或用资源文件

　　

 [StringLengthValidator(1, 25, 
            MessageTemplateResourceType = typeof(Resources), 
            MessageTemplateResourceName = "FirstNameMessage")] 
        public string FirstName { get; set; } 
        [StringLengthValidator(1, 25, 
            MessageTemplateResourceType = typeof(Resources), 
            MessageTemplateResourceName = "LastNameMessage")] 
        public string LastName { get; set; } 
        [RegexValidator(@"^ddd-dd-dddd$", 
            MessageTemplateResourceType = typeof(Resources), 
            MessageTemplateResourceName = "SSNMessage")] 

　　使用默认的消息验证