C# 从ClientModelValidationContext访问完整的html字段属性
我有一个自定义验证属性,正在从asp.net迁移到asn.net-core。这是一个实现IClientModelValidator的简单requiredif属性C# 从ClientModelValidationContext访问完整的html字段属性,c#,validation,asp.net-core,C#,Validation,Asp.net Core,我有一个自定义验证属性,正在从asp.net迁移到asn.net-core。这是一个实现IClientModelValidator的简单requiredif属性 public class RequiredIfAttribute : ValidationAttribute, IClientModelValidator { private String PropertyName { get; set; } private Object DesiredValue
public class RequiredIfAttribute : ValidationAttribute, IClientModelValidator
{
private String PropertyName { get; set; }
private Object DesiredValue { get; set; }
private readonly RequiredAttribute _innerAttribute;
public RequiredIfAttribute(String propertyName, Object desiredvalue)
{
PropertyName = propertyName;
DesiredValue = desiredvalue;
_innerAttribute = new RequiredAttribute();
}
protected override ValidationResult IsValid(object value, ValidationContext context)
{
var dependentValue = context.ObjectInstance.GetType().GetProperty(PropertyName).GetValue(context.ObjectInstance, null);
if (dependentValue.ToString() == DesiredValue.ToString())
{
if (!_innerAttribute.IsValid(value))
{
return new ValidationResult(FormatErrorMessage(context.DisplayName), new[] { context.MemberName });
}
}
return ValidationResult.Success;
}
public void AddValidation(ClientModelValidationContext context)
{
context.Attributes.Add("data-val", "true");
context.Attributes.Add("data-val-requiredif", ErrorMessage);
//this following line is the issue
context.Attributes.Add("data-val-requiredif-dependentproperty", (context as ViewContext).ViewData.TemplateInfo.GetFullHtmlFieldId(PropertyName));
context.Attributes.Add("data-val-requiredif-desiredvalue", DesiredValue.ToString());
}
}
正如我在AddValidation方法中的上述行中所评论的那样,通过将上下文转换为ViewContext并以这种方式访问它的名称,我似乎无法像在asp.net中那样获得完整的html字段id
获取非当前上下文属性的完整html字段id的新方法是什么
例如旧代码
(context as ViewContext).ViewData.TemplateInfo.GetFullHtmlFieldId(PropertyName)
可能返回了一个路径,如“viewModel.ComplexObject.PropertyID”
我已经尝试在上下文的ModelMetaData.ContainerContext中查找,但我不能保证properties容器包含我需要的属性(它可能嵌套在该容器的其他位置)
例如,假设我的模型看起来是这样的
public class A
{
[RequiredIf("PropertyB", true)]
public string propertyA { get; set; }
public bool PropertyB { get; set; }
}
有什么想法吗?在添加验证方法中使用以下代码:
var viewContext = context.ActionContext as ViewContext viewContext;
var fullName = viewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(PropertyName);
var fullId = propertyFullName.Replace(".", "_");
注意:TemplateInfo现在在asp.net core集合中没有GetFullHtmlFieldDid方法,还需要:
。替换(“[”,“”)。替换(“]”,“”)