每个号码的验证结果

Question

我有一个文本字段，用户可以在其中填写IP地址。但有时用户填写错误的IP地址。因此，对于填写的每个错误的IP地址，都会显示一条消息，IP地址错误。

我正在使用这种方法：

protected override IEnumerable <ValidationResult> IsValid(object value, ValidationContext validationContext) {
            IpConditionSettings IpCondition = validationContext.ObjectInstance as IpConditionSettings ;


            string[] lines = IpCondition.IpAddress.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
            lines = IpCondition.IpAddress.Split(new char[0], StringSplitOptions.RemoveEmptyEntries);

            foreach (var item in lines)
            {
                if (item.StartsWith("127") || item.StartsWith("192"))

                    for (int i = 0; i < item.Length; i++)
                    {

                        //return model.Product.AuthenticationSettings;
                        item[i].ToString();
                       yield return  new ValidationResult("IpAddress cant be saved");
                    }
                   // return new ValidationResult("IpAddress cant be saved");


                if (String.IsNullOrWhiteSpace(IpCondition.IpAddress))
                  yield  return new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName));

                IPAddress address;

                if (IPAddress.TryParse(item, out address))
                {
                    continue;
                }
                else
                {
                  yield  return new ValidationResult("IpAddress cant be saved");
                }
            }



        yield return null;
        }

这是消息：

  foreach (var item in lines)
            {
                if (item.StartsWith("127") || item.StartsWith("192"))

                    for (int i = 0; i < item.Length; i++)
                    {

                        //return model.Product.AuthenticationSettings;
                        item[i].ToString();
                       yield return  new ValidationResult("IpAddress cant be saved");
                    }
                   // return new ValidationResult("IpAddress cant be saved");


                if (String.IsNullOrWhiteSpace(IpCondition.IpAddress))
                  yield  return new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName));

                IPAddress address;

                if (IPAddress.TryParse(item, out address))
                {
                    continue;
                }
                else
                {
                  yield  return new ValidationResult("IpAddress cant be saved");
                }
            }

但是我收到了这条消息：

'SenecaFormsServer.SfsHelpers.IpConditionRedirectValidation.IsValid(object, System.ComponentModel.DataAnnotations.ValidationContext)':

这是Ipaddress的观点：

<div class="editor-multiline-field">
    <div class="form-group" id="hallo">
        @Html.LabelFor(model => model.IpCondition.IpAddress, new { @class = "text-bold control-label col-md-2" })
        <div class="col-lg-6 col-md-8 col-sm-10" id="hallo">
            @Html.TextAreaFor(model => model.IpCondition.IpAddress, new { htmlAttributes = new { @class = "form-control col-md-3" } })
            @Html.ValidationMessageFor(model => model.IpCondition.IpAddress, "", new { @class = "text-error" })

        </div>
    </div>
    </div>

我现在在视图中有这个：

<div class="editor-multiline-field">
    <div class="form-group" id="hallo">
        @Html.LabelFor(model => model.IpCondition.IpAddress, new { @class = "text-bold control-label col-md-2" })
        <div class="col-lg-6 col-md-8 col-sm-10" id="hallo">
            @Html.TextAreaFor(model => model.IpCondition.IpAddress, new { htmlAttributes = new { @class = "form-control col-md-3" } })
          <br />
           @for (int i = 0; i < Model.IpCondition.IpAddress.Count() ; i++)
           {
               <br />
            @Html.ValidationMessageFor(model => model.IpCondition.IpAddress, "", new { @class = "text-error" })
           }



        </div>
    </div>
    </div>

这是我的方法：

protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
    IpConditionSettings IpCondition = validationContext.ObjectInstance as IpConditionSettings ;


    string[] lines = IpCondition.IpAddress.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
    lines = IpCondition.IpAddress.Split(new char[0], StringSplitOptions.RemoveEmptyEntries);

    foreach (var item in lines)
    {
        if (item.StartsWith("127") || item.StartsWith("192"))

            foreach (var result in lines)
            {

                result.ToString();
                 return new ValidationResult("IpAddress cant be saved");
            }
           // return new ValidationResult("IpAddress cant be saved");


        if (String.IsNullOrWhiteSpace(IpCondition.IpAddress))
            return new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName));

        IPAddress address;

        if (IPAddress.TryParse(item, out address))
        {
            continue;
        }
        else
        {
            return new ValidationResult("IpAddress cant be saved");
        }
    }

 return null;
}

但现在我得到错误消息的六倍。例如，我填写：127和192然后我必须收到两条错误消息。