Question

我正在寻找一种检查表单中两个文本框的方法，以确保至少填充其中一个文本框。仅当两个文本框都为空时，验证才会失败。使用Unobtrusive JScript和MVC3表单验证是否有一种简单的方法可以做到这一点？感谢

Answer 1

您可以实现类似answer by Darin Dimitrov之类的内容。

它解释了如何制作自己的自定义验证器（在客户端和服务器端）。它将使用MVC3验证和JQuery不显眼的验证。您可以检查是否满足条件（选中一个或多个复选框）并根据该条件进行验证。

Answer 2

Javascript你可以用Jquery

这样做

$(document).ready(function(){
    var inp = $("#txt").val();
    var inp2 = $("#txt2").val(); 
  if(jQuery.trim(inp).length < 0 && jQuery.trim(inp2).length < 0)
   {
     //show your message.
   }
})

Answer 3

您可以查看下面提到的文章中解释的条件验证

http://blogs.msdn.com/b/simonince/archive/2010/06/04/conditional-validation-in-mvc.aspx

你可以在两个文本框中加上 [RequiredIf] 属性，并检查textBox1是否为空，然后需要textbox2，反之亦然。

Answer 4

试试这个。它有所有的信息。希望它有所帮助：

http://derans.blogspot.com/2011/05/contact-form-revisited-with-aspnet-mvc.html

Answer 5

尝试nuget包万无一失的验证。它包括[Requiredif]和[Requiredifnot] http://foolproof.codeplex.com/

Answer 6

这是我的版本的AtLeastOneRequired验证器，支持DisplayAttribute：

[AttributeUsage(AttributeTargets.Property)]
public class AtLeastOneRequiredAttribute : ValidationAttribute
{
    private readonly string[] _members;

    public AtLeastOneRequiredAttribute(params string[] members)
    {
        _members = members;
    }

    protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
        if (_members == null || _members.Length < 1)
            return null;

        var displayNames = new List<string>();

        foreach (var member in _members)
        {
            var propertyInfo = validationContext.ObjectType.GetProperty(member);
            if (propertyInfo == null)
                throw new InternalErrorException("Property '{0}' cannot be found in '{1}'", member, validationContext.ObjectType);

            var propertyValue = propertyInfo.GetValue(validationContext.ObjectInstance);

            var stringValue = propertyValue as string;
            if (stringValue != null && stringValue.Trim().Length != 0)
                return ValidationResult.Success;

            var displayAttribute = propertyInfo.GetCustomAttribute<DisplayAttribute>();
            displayNames.Add(displayAttribute != null ? displayAttribute.Name : member);
        }

        return new ValidationResult(FormatErrorMessage(String.Join(", ", displayNames)));
    }
}

非常简单的模型：

public class FeedbackPostModel
{
    [Display(Name = "Phone")]
    [AtLeastOneRequired("SenderPhone", "SenderEmail", ErrorMessageResourceName = "ValidationAtLeastOnRequired", ErrorMessageResourceType = typeof(Strings))]
    [StringLength(256, ErrorMessageResourceName = "ValidationFieldStringLengthMax", ErrorMessageResourceType = typeof(Strings))]
    [Phone(ErrorMessageResourceName = "ValidationFieldPhoneFormat", ErrorMessageResourceType = typeof(Strings))]
    public string SenderPhone { get; set; }

    [Display(Name = "Email")]
    [StringLength(256, ErrorMessageResourceName = "ValidationFieldStringLengthMax", ErrorMessageResourceType = typeof(Strings))]
    [EmailAddress(ErrorMessageResourceName = "ValidationFieldEmailAddress", ErrorMessageResourceType = typeof(Strings))]
    public string SenderEmail { get; set; }
}

MVC3验证文本框中的一个或另一个所需

6 个答案: