我做一個屬性([ValidateObject]),它會驗證你把你的階級屬性,就像你會覺得它該做的。
public class Personne
{
[ValidateObject]
public Address Address { get; set; }
//[...]
}
(地址是一個自定義類。)
它可用於驗證:
代碼:
public class ValidateObjectAttribute : ValidationAttribute
{
public ValidateObjectAttribute()
{
}
private ValidationContext ValidationContext { get; set; }
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
this.ValidationContext = validationContext;
var results = new List<ValidationResult>();
try
{
var isIterable = this.IsIterable(value);
if (isIterable)
{
int currentItemPosition = -1;
foreach (var objectToValidate in value as IEnumerable<object>)
{
currentItemPosition++;
var resultTemp = ValidationsForObject(objectToValidate, true, currentItemPosition);
if (resultTemp != null)
results.AddRange(resultTemp);
}
if (results.Count <= 0)
results = null;
}
else
results = ValidationsForObject(value);
if (results != null)
{
//Build a validation result
List<string> memberNames = new List<string>();
results.ForEach(r => memberNames.AddRange(r.MemberNames));
var compositeResultsReturn = new CompositeValidationResult($"Validation for {validationContext.DisplayName} failed!", memberNames.AsEnumerable());
results.ForEach(r => compositeResultsReturn.AddResult(r));
return compositeResultsReturn;
}
}
catch (Exception) { }
return ValidationResult.Success;
}
private List<ValidationResult> ValidationsForObject (object objectToValidate, bool IsIterable = false, int position = -1)
{
var results = new List<ValidationResult>();
var contextTemp = new ValidationContext(objectToValidate, null, null);
var resultsForThisItem = new List<ValidationResult>();
var isValid = Validator.TryValidateObject(objectToValidate, contextTemp, resultsForThisItem, true);
if (isValid)
return null;
foreach (var validationResult in resultsForThisItem)
{
List<string> propNames = new List<string>();// add prefix to properties
foreach (var nameOfProp in validationResult.MemberNames)
{
if (IsIterable)
propNames.Add($"{this.ValidationContext.MemberName}[{position}].{nameOfProp}");
else
propNames.Add($"{this.ValidationContext.MemberName}.{nameOfProp}");
}
var customFormatValidation = new ValidationResult(validationResult.ErrorMessage, propNames);
results.Add(customFormatValidation);
}
return results;
}
private bool IsIterable(object value)
{
////COULD WRITE THIS, but its complicated to debug...
//if (value.GetType().GetInterfaces().Any(
//i => i.IsGenericType &&
//i.GetGenericTypeDefinition() == typeof(IEnumerable<>)))
//{
// // foreach...
//}
Type valueType = value.GetType();
var interfaces = valueType.GetInterfaces();
bool isIterable = false;
foreach (var i in interfaces)
{
var isGeneric = i.IsGenericType;
bool isEnumerable = i.GetGenericTypeDefinition() == typeof(IEnumerable<>);
isIterable = isGeneric && isEnumerable;
if (isIterable)
break;
}
return isIterable;
}
}
public class CompositeValidationResult : ValidationResult
{
private readonly List<ValidationResult> _results = new List<ValidationResult>();
public IEnumerable<ValidationResult> Results
{
get
{
return _results;
}
}
public CompositeValidationResult(string errorMessage) : base(errorMessage)
{
}
public CompositeValidationResult(string errorMessage, IEnumerable<string> memberNames) : base(errorMessage, memberNames)
{
}
protected CompositeValidationResult(ValidationResult validationResult) : base(validationResult)
{
}
public void AddResult(ValidationResult validationResult)
{
_results.Add(validationResult);
}
}
這將工作,如果你的模型是否正確綁定:)
您可能需要添加所需的屬性,確保對象不爲空本身。
[Required]
希望它有幫助!
它看起來不像根對象有錯誤(非預期的和ModelState.IsValid = true) – ChrisHDog
請嘗試另一個建議,以確保根證實驗證方法中的孩子在該帖子中顯示或使用屬性基於方法。 –