Question

我的代码如下：

//Validate that all the attributes are well setted

ValidationContext vc = new ValidationContext(callDAO, null, null);
var resultsValidation = new List<ValidationResult>();
bool validated = Validator.TryValidateObject(callDAO, vc, resultsValidation, true);

if(validated)
{
   //Execute some code
}
else{
     notValidated++;
     var errorValidations = resultsValidation.Select(v => v.ErrorMessage);
     log.Error(string.Format("The attribute VALIDATION FAILED due to: " + errorValidations));
}

我想要做的是正确打印日志文件中“errorValidations”中包含的错误。但是在日志中写入时，会写入以下内容：

System.Linq.Enumerable+WhereSelectListIterator`2[System.ComponentModel.DataAnnotations.ValidationResult,System.String]

问题：如何正确显示“resultsValidation”中包含的信息？

注意：当引入的attribut lenght大于定义时，“resultsValidation”中的内容示例：

[0] {The field Id must be a string with a maximum lenght of 15.}

谢谢大家的回答。

Answer 1

errorValidations属于IEnumerable<ValidationResult>类型，您需要一个foreach循环来遍历集合以打印每个验证结果，

foreach (ValidationResult result in errorValidations)
    log.Error("The attribute VALIDATION FAILED due to: " + result.ToString());

打印结果保存在ValidationResult错误列表.NET中

1 个答案: