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我使用的是 .net 4.0，所以不能使用内置的 FileExtensions 属性。

我正在尝试进行自己的验证，但遇到了绊脚石。我发现这篇文章看起来是一个很好的资源：http ://blog.tomasjansson.com/creating-custom-unobtrusive-file-extension-validation-in-asp-net-mvc-3-and-jquery

但唉，我的对象（值）总是以空值出现。我唯一不同的是我没有使用 HttpPostedFileBase 作为我的模型，我使用的是具有其他一些属性的视图模型。

任何想法如何在 IsValid 重载中填充我的对象以便我可以检查它？

这是我的代码，它或多或少是从那篇文章中复制和粘贴的，但我的视图模型中有更多内容：

视图模型：

public class Mp3ViewModel
{
    public string FileName { get; set; }
    public string FilePath { get; set; }
    [Required(ErrorMessage="You must enter a description of the MP3")]
    [Display(Name = "Description of MP3:")]
    public string Description { get; set; }
    [Required(ErrorMessage = "You must enter a job role")]
    [Display(Name = "Job Role:")]
    public string CallJobRole { get; set; }
    [Required(ErrorMessage = "You must enter a call outcome")]
    [Display(Name = "Call Outcome:")]
    public string CallOutcome { get; set; }
    [Required(ErrorMessage = "You must enter a call type")]
    [Display(Name = "Call Type:")]
    public string CallType { get; set; }
    [Required(ErrorMessage = "You must enter a call section")]
    [Display(Name = "Call Section:")]
    public string CallSection { get; set; }
    [Required(ErrorMessage = "You must enter call comments")]
    [Display(Name = "Call Comments:")]
    public string CallComments { get; set; }
    [Required(ErrorMessage = "You must enter call keywords")]
    [Display(Name = "Call Keywords (separate by comma):")]
    public string CallKeywords { get; set; }
    [Required(ErrorMessage = "You must select a file")]
    [Display(Name = "Select an MP3 to upload:")]
    [FileExtensions("txt|doc")]
    public HttpPostedFileBase Mp3 { get; set; }
}

自定义属性验证：

[AttributeUsage(AttributeTargets.Field | AttributeTargets.Property, AllowMultiple = false, Inherited = true)]
public class FileExtensionsAttribute : ValidationAttribute
{
    private List<string> ValidExtensions { get; set; }

    public FileExtensionsAttribute(string fileExtensions)
    {
        ValidExtensions = fileExtensions.Split('|').ToList();
    }

    public override bool IsValid(object value)
    {
        HttpPostedFileBase file = value as HttpPostedFileBase;
        if (file != null)
        {
            var fileName = file.FileName;
            var isValidExtension = ValidExtensions.Any(y => fileName.EndsWith(y));
            return isValidExtension;
        }
        return true;
    }
}

看法：

@model CallLibrary.BO.ViewModels.Mp3ViewModel
@{
    ViewBag.Title = "Call Library Administration";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
@section scripts
{
    <script src="~/Scripts/jquery.validate.min.js" type="text/javascript"></script>
    <script src="~/Scripts/jquery.validate.unobtrusive.min.js" type="text/javascript"></script>
}

<h2>Call Library Administration</h2>
@ViewBag.test
@using (Html.BeginForm())
{
<div>
@Html.ValidationMessageFor(x => x.Description)<br />
@Html.LabelFor(x => x.Description)
@Html.TextAreaFor(x => x.Description)

</div>
<div>
@Html.ValidationMessageFor(x => x.CallJobRole)<br />
@Html.LabelFor(x => x.CallJobRole)
@Html.TextBoxFor(x => x.CallJobRole)

</div>
<div>
@Html.ValidationMessageFor(x => x.CallOutcome)<br />
@Html.LabelFor(x => x.CallOutcome)
@Html.TextBoxFor(x => x.CallOutcome)

</div>
<div>
@Html.ValidationMessageFor(x => x.CallType)<br />
@Html.LabelFor(x => x.CallType)
@Html.TextBoxFor(x => x.CallType)

</div>
<div>
@Html.ValidationMessageFor(x => x.CallSection)<br />
@Html.LabelFor(x => x.CallSection)
@Html.TextBoxFor(x => x.CallSection)

</div>
<div>
@Html.ValidationMessageFor(x => x.CallComments)<br />
@Html.LabelFor(x => x.CallComments)
@Html.TextAreaFor(x => x.CallComments)

</div>
<div>
@Html.ValidationMessageFor(x => x.CallKeywords)<br />
@Html.LabelFor(x => x.CallKeywords)
@Html.TextAreaFor(x => x.CallKeywords)

</div>
    <div>
    @Html.ValidationMessageFor(x=>x.Mp3)<br />
    @Html.LabelFor(x=>x.Mp3)
    @Html.TextBoxFor(x=>x.Mp3, new {type= "file"})
    </div>
 <div>
 <input type="submit" value="Add MP3" />
 </div>   
}

任何建议将不胜感激。TIA

4

1 回答 1

1

哦！我的错。我没有使用包含多部分表单数据的表单。当我补充说，世界上一切都很好。

于 2013-09-30T18:04:59.060 回答