DataValidationAttribute.cs
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using NCC.DataValidation;
using NCC.Dependency;
using NCC.Localization;
using System.Linq;
namespace System.ComponentModel.DataAnnotations
{
/// <summary>
/// 数据类型验证特性
/// </summary>
[SuppressSniffer]
public class DataValidationAttribute : ValidationAttribute
{
/// <summary>
/// 构造函数
/// </summary>
/// <param name="validationPattern">验证逻辑</param>
/// <param name="validationTypes"></param>
public DataValidationAttribute(ValidationPattern validationPattern, params object[] validationTypes)
{
ValidationPattern = validationPattern;
ValidationTypes = validationTypes;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="validationTypes"></param>
public DataValidationAttribute(params object[] validationTypes)
{
ValidationPattern = ValidationPattern.AllOfThem;
ValidationTypes = validationTypes;
}
/// <summary>
/// 验证逻辑
/// </summary>
/// <param name="value"></param>
/// <param name="validationContext"></param>
/// <returns></returns>
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
// 判断是否允许 空值
if (AllowNullValue && value == null) return ValidationResult.Success;
// 是否忽略空字符串
if (AllowEmptyStrings && value is string && value.Equals(string.Empty)) return ValidationResult.Success;
// 执行值验证
var dataValidationResult = value.TryValidate(ValidationPattern, ValidationTypes);
dataValidationResult.MemberOrValue = validationContext.MemberName;
// 验证失败
if (!dataValidationResult.IsValid)
{
var resultMessage = dataValidationResult.ValidationResults.FirstOrDefault().ErrorMessage;
// 进行多语言处理
var errorMessage = !string.IsNullOrWhiteSpace(ErrorMessage) ? ErrorMessage : resultMessage;
return new ValidationResult(string.Format(L.Text == null ? errorMessage : L.Text[errorMessage], validationContext.MemberName));
}
// 验证成功
return ValidationResult.Success;
}
/// <summary>
/// 验证类型
/// </summary>
public object[] ValidationTypes { get; set; }
/// <summary>
/// 验证逻辑
/// </summary>
public ValidationPattern ValidationPattern { get; set; }
/// <summary>
///是否允许空字符串
/// </summary>
public bool AllowEmptyStrings { get; set; } = false;
/// <summary>
/// 允许空值，有值才验证，默认 false
/// </summary>
public bool AllowNullValue { get; set; } = false;
}
}