protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
var result = ValidationResult.Success;
var otherValue = validationContext.ObjectType.GetProperty(OtherPropertyName)?.GetValue(validationContext.ObjectInstance, null);
if (value == null)
{
return(result);
}
if (!(value is DateTime))
{
return(result);
}
if (otherValue == null)
{
return(result);
}
if (!(otherValue is DateTime))
{
return(result);
}
if (!OtherPropertyName.Contains("EventDateTime"))
{
if ((DateTime)value > (DateTime)otherValue)
{
result = new ValidationResult(ErrorMessage);
}
}
else
{
if ((DateTime)value < (DateTime)otherValue)
{
result = new ValidationResult(ErrorMessage);
}
}
if ((DateTime)value == (DateTime)otherValue && !AllowEquality)
{
result = new ValidationResult(ErrorMessage);
}
return(result);
}
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
if (OtherPropertyName.IsNullOrEmptyOrWhiteSpace())
{
return(new ValidationResult("Other property name is empty"));
}
var otherPropertyInfo = validationContext.ObjectType.GetProperty(OtherPropertyName);
if (otherPropertyInfo == null)
{
return(new ValidationResult($"Unknown property: {OtherPropertyName}"));
}
var otherValue = otherPropertyInfo.GetValue(validationContext.ObjectInstance, null);
if (Equals(OtherPropertyValue, otherValue))
{
return(base.IsValid(value, validationContext));
}
return(null);
}
/// <summary>
/// To check wether the property safisfy the required validaton based on the other property value.
/// </summary>
/// <param name="value">Value of the property.</param>
/// <param name="validationContext">The request validation context.</param>
/// <returns>Returns <see cref="ValidationResult"/>.</returns>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="validationContext"/> is null.</exception>
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
if (validationContext == null)
{
throw new ArgumentNullException(nameof(validationContext));
}
if (string.IsNullOrWhiteSpace(OtherPropertyName))
{
throw new ArgumentException($"Other property name is empty");
}
object parentObj = validationContext.ObjectInstance;
PropertyInfo otherPropertyInfo = validationContext.ObjectType.GetProperty(OtherPropertyName);
if (otherPropertyInfo == null)
{
string[] propertyNames = OtherPropertyName.Split('.');
otherPropertyInfo = validationContext.ObjectType.GetProperty(propertyNames[0]);
if (otherPropertyInfo == null)
{
throw new ArgumentException($"The object does not contain any property with name '{OtherPropertyName}'");
}
for (int i = 1; i < propertyNames.Length; i++)
{
parentObj = otherPropertyInfo.GetValue(parentObj, null);
otherPropertyInfo = otherPropertyInfo.PropertyType.GetProperty(propertyNames[i]);
if (otherPropertyInfo == null)
{
throw new ArgumentException($"The object does not contain any property with name '{OtherPropertyName}'");
}
}
}
Type otherPropertyType = otherPropertyInfo.PropertyType;
object otherPropertyContextValue = otherPropertyInfo.GetValue(parentObj, null);
// Cast value to the appropriate dynamic type.
dynamic otherPropertyContextValueDynamic;
dynamic otherPropertyValueDynamic;
if (otherPropertyType.IsDateTimeType())
{
otherPropertyContextValueDynamic = otherPropertyContextValue.ToDateTime();
otherPropertyValueDynamic = OtherPropertyValue.ToDateTime();
}
else if (otherPropertyType.IsNumericType())
{
otherPropertyContextValueDynamic = Convert.ToDecimal(otherPropertyContextValue, CultureInfo.InvariantCulture);
otherPropertyValueDynamic = Convert.ToDecimal(OtherPropertyValue, CultureInfo.InvariantCulture);
}
else if (otherPropertyType == typeof(string))
{
if (this.ComparisonType == ComparisonType.Equal || this.ComparisonType == ComparisonType.NotEqual)
{
otherPropertyContextValueDynamic = otherPropertyContextValue?.ToString() ?? string.Empty;
otherPropertyValueDynamic = OtherPropertyValue?.ToString() ?? string.Empty;
}
else
{
otherPropertyContextValueDynamic = otherPropertyContextValue?.ToString().Length ?? 0;
otherPropertyValueDynamic = OtherPropertyValue?.ToString().Length ?? 0;
}
}
else if (otherPropertyType.IsTimeSpanType())
{
otherPropertyContextValueDynamic = otherPropertyContextValue.ToTimeSpan();
otherPropertyValueDynamic = OtherPropertyValue.ToTimeSpan();
}
else if (otherPropertyType == typeof(bool))
{
if (ComparisonType != ComparisonType.Equal && ComparisonType != ComparisonType.NotEqual)
{
throw new Exception($"The comparison type with boolean is not supported in {nameof(RequiredIfAttribute)}. Use Equal or NotEqual.");
}
otherPropertyContextValueDynamic = Convert.ToBoolean(otherPropertyContextValue, CultureInfo.InvariantCulture);
otherPropertyValueDynamic = Convert.ToBoolean(OtherPropertyValue, CultureInfo.InvariantCulture);
}
else
{
throw new Exception($"The type is not supported in {nameof(RequiredIfAttribute)}.");
}
// Do comaprison and do the required validation.
if (ComparisonType == ComparisonType.Equal)
{
if (otherPropertyContextValueDynamic == otherPropertyValueDynamic)
{
return(IsRequired(value, validationContext));
}
}
else if (ComparisonType == ComparisonType.NotEqual)
{
if (otherPropertyContextValueDynamic != otherPropertyValueDynamic)
{
return(IsRequired(value, validationContext));
}
}
else if (ComparisonType == ComparisonType.GreaterThan)
{
if (otherPropertyContextValueDynamic > otherPropertyValueDynamic)
{
return(IsRequired(value, validationContext));
}
}
else if (ComparisonType == ComparisonType.GreaterThanOrEqual)
{
if (otherPropertyContextValueDynamic >= otherPropertyValueDynamic)
{
return(IsRequired(value, validationContext));
}
}
else if (ComparisonType == ComparisonType.SmallerThan)
{
if (otherPropertyContextValueDynamic < otherPropertyValueDynamic)
{
return(IsRequired(value, validationContext));
}
}
else if (ComparisonType == ComparisonType.SmallerThanOrEqual)
{
if (otherPropertyContextValueDynamic <= otherPropertyValueDynamic)
{
return(IsRequired(value, validationContext));
}
}
return(ValidationResult.Success);
}