Validation 未使用IValidatableObject显示自定义验证消息

我有一个简单的表单，有两个按钮（取消和提交）和一个文本区。用户键入电子邮件地址列表并按submit。我试图弄清楚为什么我提交表单时没有显示自定义消息。我知道验证逻辑在触发我的[Required]规则时起作用，我可以看到错误消息：

但是，当我输入“test@”等数据然后提交时，验证中的逻辑会被触发，但我看不到错误消息“请确保所有电子邮件都有效”。我做错了什么

这就是我的模型：

public class ShareModel : IValidatableObject
{
    [HiddenInput] public string Title { get; set; }

    [Required]
    public string Emails { get; set; }

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        // custom validation logic here
        yield return new ValidationResult($"Please make sure that all of the emails are valid", new[] { "Emails" });
    }
}

公共类共享模型：IValidatableObject
{
[HiddenInput]公共字符串标题{get；set；}
[必需]
公共字符串电子邮件{get；set；}
公共IEnumerable验证（ValidationContext ValidationContext）
{
//这里的自定义验证逻辑
返回新的ValidationResult（$“请确保所有电子邮件都有效”，新[]{“电子邮件”}）；
}
}

这是我的看法：

<div class="modal fade" id="shareFormModal" role="dialog">
<div class="modal-dialog modal-md">
    <!-- Modal content-->
    <div class="modal-content">
        <div class="modal-header">
            <h4 class="modal-title">Share Workbook - @Model.Title</h4>

        </div>

        @using (Html.BeginForm("ShareWorkbook", "Home", FormMethod.Post, new {@id = "partialform"}))
        {
            <div class="modal-body">

                <label>@BaseLanguage.Share_workbook_Instruction_text</label>
                <div class="form-group">
                    <textarea class="form-control" asp-for="Emails" rows="4" cols="50" placeholder="@BaseLanguage.ShareDialogPlaceholder"></textarea>
                    <span asp-validation-for="Emails" class="text-danger"></span>
                </div>

                <input asp-for="Title"/>
            </div>
            <div class="modal-footer">
                <button type="submit" class="btn btn-primary">Share</button>
                <button id="btnCancelDialog" type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
            </div>
        }

    </div>
</div>

共享工作簿-@Model.Title
@使用（Html.BeginForm（“共享工作簿”、“主页”、FormMethod.Post、new{@id=“partialform”}））
{
@BaseLanguage.Share\u工作簿\u说明\u文本
分享
取消
}

根据此

IValidatableObject

不在客户端考虑。为了显示来自自定义验证的自定义错误消息，您需要实现自定义

ValidationAttribute

，该属性还实现了所述的

IClientModelValidator

接口。

供将来参考，正如Alexander在上面解释的，我必须同时使用

ValidationAttribute，IClientModelValidator

类似于：

共享模型：

public class ShareModel
{
    [HiddenInput] public string Title { get; set; }

    [Required]
    [IsEmailAttribute(ErrorMessage = "Check all of the emails you have typed")]
    public string Emails { get; set; }
}

public class IsEmailAttribute : ValidationAttribute, IClientModelValidator
{
    protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
         return new ValidationResult("Check emails!");
    }

    public void AddValidation(ClientModelValidationContext context)
    {
        MergeAttribute(context.Attributes, "data-val", "true");
        var errorMessage = FormatErrorMessage(context.ModelMetadata.GetDisplayName());
        MergeAttribute(context.Attributes, "data-val-isEmail", errorMessage);
    }

    private bool MergeAttribute(
        IDictionary<string, string> attributes,
        string key,
        string value)
    {
        if (attributes.ContainsKey(key))
        {
            return false;
        }
        attributes.Add(key, value);
        return true;
    }

@using DNAAnalysisCore.Resources
@model DNAAnalysisCore.Models.ShareModel

<!-- Modal -->
<div class="modal fade" id="shareFormModal" role="dialog">
    <div class="modal-dialog modal-md">
        <!-- Modal content-->
        <div class="modal-content">
            <div class="modal-header">
                <h4 class="modal-title">Share Workbook - @Model.Title</h4>

            </div>

            @using (Html.BeginForm("ShareWorkbook", "Home", FormMethod.Post, new {@id = "partialform"}))
            {
                <div class="modal-body">

                    <label>@BaseLanguage.Share_workbook_Instruction_text</label>
                    <div class="form-group">
                        <textarea class="form-control" asp-for="Emails" rows="4" cols="50" placeholder="@BaseLanguage.ShareDialogPlaceholder"></textarea>
                        <span asp-validation-for="Emails" class="text-danger"></span>
                    </div>

                    <input asp-for="Title"/>
                </div>
                <div class="modal-footer">
                    <button type="submit" class="btn btn-primary">Share</button>
                    <button id="btnCancelDialog" type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
                </div>
            }

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

@using DNAAnalysisCore.Resources
@model DNAAnalysisCore.Models.WorkBookModel
@{
}

@section BodyFill
{
    <div id="shareFormContainer">
        <!--PLACEHOLDER FOR SHARE DIALOG -->
        @{
            @Html.Partial("_ShareView", new ShareModel())
        }

    </div>

    <div class="workbook-container">
        <table class="table">
            <tbody>
                @foreach (var workbook in Model.Workbooks)
                {
                    <tr>
                        <td>@Html.ActionLink(workbook.Name, "Open", "OpenAnalytics", new { id = Model.Id, workbook = workbook.Name })</td>
                        <td>
                            <button title="Share" class="share-button" onclick='showSharingView("@workbook.Name")'>&nbsp;</button>
                        </td>
                    </tr>
                }
            </tbody>
        </table>
    </div>
}

@section Scripts
{
    <!--Load JQuery 'unobtrusive' validation -->
    @await Html.PartialAsync("_ValidationScriptsPartial")
    <script type="text/javascript">

        function showSharingView(title) {
            var url = "@Url.Action("ShowShareDialog", "Home")" + "?workbookTitle=" + encodeURI(title);
            $('#shareFormContainer').load(url,
                function() {
                    $('#shareFormModal').modal("show");
//                    // We need to manually register the form for validation as the dialog is
//                    // not included in the page when it initially loads
                    $.validator.unobtrusive.parse("#partialform");

                    // email validation
                    $.validator.addMethod("isEmail",
                        function (value, element, parameters) {
                            // TODO CLIENT SIDE VALIDATETION LOGIC HERE
                            return false;
                        });
                    $.validator.unobtrusive.adapters.add("isEmail",
                        [],
                        function(options) {
                            options.rules.isEmail = {};
                            options.messages["isEmail"] = options.message;
                        });
                });
        }

    </script>
}

公共类共享模型
{
[HiddenInput]公共字符串标题{get；set；}
[必需]
[IsEmailAttribute（ErrorMessage=“检查您键入的所有电子邮件”）]
公共字符串电子邮件{get；set；}
}
公共类IsEmailAttribute:ValidationAttribute，IClientModelValidator
{
受保护的重写ValidationResult有效（对象值，ValidationContext ValidationContext）
{
返回新的ValidationResult（“检查电子邮件！”）；
}
public void AddValidation（ClientModelValidationContext上下文）
{
MergeAttribute（context.Attributes，“数据值”、“真”）；
var errorMessage=FormatErrorMessage（context.ModelMetadata.GetDisplayName（））；
MergeAttribute（context.Attributes，“data val isEmail”，errorMessage）；
}
私有布尔合并属性(
IDictionary属性，
字符串键，
字符串值）
{
if（attributes.ContainsKey（键））
{
返回false；
}
属性。添加（键、值）；
返回true；
}

}

\u ShareView.cshtml：

public class ShareModel
{
    [HiddenInput] public string Title { get; set; }

    [Required]
    [IsEmailAttribute(ErrorMessage = "Check all of the emails you have typed")]
    public string Emails { get; set; }
}

public class IsEmailAttribute : ValidationAttribute, IClientModelValidator
{
    protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
         return new ValidationResult("Check emails!");
    }

    public void AddValidation(ClientModelValidationContext context)
    {
        MergeAttribute(context.Attributes, "data-val", "true");
        var errorMessage = FormatErrorMessage(context.ModelMetadata.GetDisplayName());
        MergeAttribute(context.Attributes, "data-val-isEmail", errorMessage);
    }

    private bool MergeAttribute(
        IDictionary<string, string> attributes,
        string key,
        string value)
    {
        if (attributes.ContainsKey(key))
        {
            return false;
        }
        attributes.Add(key, value);
        return true;
    }

@using DNAAnalysisCore.Resources
@model DNAAnalysisCore.Models.ShareModel

<!-- Modal -->
<div class="modal fade" id="shareFormModal" role="dialog">
    <div class="modal-dialog modal-md">
        <!-- Modal content-->
        <div class="modal-content">
            <div class="modal-header">
                <h4 class="modal-title">Share Workbook - @Model.Title</h4>

            </div>

            @using (Html.BeginForm("ShareWorkbook", "Home", FormMethod.Post, new {@id = "partialform"}))
            {
                <div class="modal-body">

                    <label>@BaseLanguage.Share_workbook_Instruction_text</label>
                    <div class="form-group">
                        <textarea class="form-control" asp-for="Emails" rows="4" cols="50" placeholder="@BaseLanguage.ShareDialogPlaceholder"></textarea>
                        <span asp-validation-for="Emails" class="text-danger"></span>
                    </div>

                    <input asp-for="Title"/>
                </div>
                <div class="modal-footer">
                    <button type="submit" class="btn btn-primary">Share</button>
                    <button id="btnCancelDialog" type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
                </div>
            }

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

@using DNAAnalysisCore.Resources
@model DNAAnalysisCore.Models.WorkBookModel
@{
}

@section BodyFill
{
    <div id="shareFormContainer">
        <!--PLACEHOLDER FOR SHARE DIALOG -->
        @{
            @Html.Partial("_ShareView", new ShareModel())
        }

    </div>

    <div class="workbook-container">
        <table class="table">
            <tbody>
                @foreach (var workbook in Model.Workbooks)
                {
                    <tr>
                        <td>@Html.ActionLink(workbook.Name, "Open", "OpenAnalytics", new { id = Model.Id, workbook = workbook.Name })</td>
                        <td>
                            <button title="Share" class="share-button" onclick='showSharingView("@workbook.Name")'>&nbsp;</button>
                        </td>
                    </tr>
                }
            </tbody>
        </table>
    </div>
}

@section Scripts
{
    <!--Load JQuery 'unobtrusive' validation -->
    @await Html.PartialAsync("_ValidationScriptsPartial")
    <script type="text/javascript">

        function showSharingView(title) {
            var url = "@Url.Action("ShowShareDialog", "Home")" + "?workbookTitle=" + encodeURI(title);
            $('#shareFormContainer').load(url,
                function() {
                    $('#shareFormModal').modal("show");
//                    // We need to manually register the form for validation as the dialog is
//                    // not included in the page when it initially loads
                    $.validator.unobtrusive.parse("#partialform");

                    // email validation
                    $.validator.addMethod("isEmail",
                        function (value, element, parameters) {
                            // TODO CLIENT SIDE VALIDATETION LOGIC HERE
                            return false;
                        });
                    $.validator.unobtrusive.adapters.add("isEmail",
                        [],
                        function(options) {
                            options.rules.isEmail = {};
                            options.messages["isEmail"] = options.message;
                        });
                });
        }

    </script>
}

@使用dnaanalysicscore.Resources
@模型DNAAnalysicScore.Models.ShareModel
共享工作簿-@Model.Title
@使用（Html.BeginForm（“共享工作簿”、“主页”、FormMethod.Post、new{@id=“partialform”}））
{
@BaseLanguage.Share\u工作簿\u说明\u文本
分享
取消
}

索引.cshtnl：

public class ShareModel
{
    [HiddenInput] public string Title { get; set; }

    [Required]
    [IsEmailAttribute(ErrorMessage = "Check all of the emails you have typed")]
    public string Emails { get; set; }
}

public class IsEmailAttribute : ValidationAttribute, IClientModelValidator
{
    protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
         return new ValidationResult("Check emails!");
    }

    public void AddValidation(ClientModelValidationContext context)
    {
        MergeAttribute(context.Attributes, "data-val", "true");
        var errorMessage = FormatErrorMessage(context.ModelMetadata.GetDisplayName());
        MergeAttribute(context.Attributes, "data-val-isEmail", errorMessage);
    }

    private bool MergeAttribute(
        IDictionary<string, string> attributes,
        string key,
        string value)
    {
        if (attributes.ContainsKey(key))
        {
            return false;
        }
        attributes.Add(key, value);
        return true;
    }

@using DNAAnalysisCore.Resources
@model DNAAnalysisCore.Models.ShareModel

<!-- Modal -->
<div class="modal fade" id="shareFormModal" role="dialog">
    <div class="modal-dialog modal-md">
        <!-- Modal content-->
        <div class="modal-content">
            <div class="modal-header">
                <h4 class="modal-title">Share Workbook - @Model.Title</h4>

            </div>

            @using (Html.BeginForm("ShareWorkbook", "Home", FormMethod.Post, new {@id = "partialform"}))
            {
                <div class="modal-body">

                    <label>@BaseLanguage.Share_workbook_Instruction_text</label>
                    <div class="form-group">
                        <textarea class="form-control" asp-for="Emails" rows="4" cols="50" placeholder="@BaseLanguage.ShareDialogPlaceholder"></textarea>
                        <span asp-validation-for="Emails" class="text-danger"></span>
                    </div>

                    <input asp-for="Title"/>
                </div>
                <div class="modal-footer">
                    <button type="submit" class="btn btn-primary">Share</button>
                    <button id="btnCancelDialog" type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
                </div>
            }

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

@using DNAAnalysisCore.Resources
@model DNAAnalysisCore.Models.WorkBookModel
@{
}

@section BodyFill
{
    <div id="shareFormContainer">
        <!--PLACEHOLDER FOR SHARE DIALOG -->
        @{
            @Html.Partial("_ShareView", new ShareModel())
        }

    </div>

    <div class="workbook-container">
        <table class="table">
            <tbody>
                @foreach (var workbook in Model.Workbooks)
                {
                    <tr>
                        <td>@Html.ActionLink(workbook.Name, "Open", "OpenAnalytics", new { id = Model.Id, workbook = workbook.Name })</td>
                        <td>
                            <button title="Share" class="share-button" onclick='showSharingView("@workbook.Name")'>&nbsp;</button>
                        </td>
                    </tr>
                }
            </tbody>
        </table>
    </div>
}

@section Scripts
{
    <!--Load JQuery 'unobtrusive' validation -->
    @await Html.PartialAsync("_ValidationScriptsPartial")
    <script type="text/javascript">

        function showSharingView(title) {
            var url = "@Url.Action("ShowShareDialog", "Home")" + "?workbookTitle=" + encodeURI(title);
            $('#shareFormContainer').load(url,
                function() {
                    $('#shareFormModal').modal("show");
//                    // We need to manually register the form for validation as the dialog is
//                    // not included in the page when it initially loads
                    $.validator.unobtrusive.parse("#partialform");

                    // email validation
                    $.validator.addMethod("isEmail",
                        function (value, element, parameters) {
                            // TODO CLIENT SIDE VALIDATETION LOGIC HERE
                            return false;
                        });
                    $.validator.unobtrusive.adapters.add("isEmail",
                        [],
                        function(options) {
                            options.rules.isEmail = {};
                            options.messages["isEmail"] = options.message;
                        });
                });
        }

    </script>
}

@使用dnaanalysicscore.Resources
@模型DNAAnalysicScore.Models.WorkBookModel
@{
}
@分段填体
{
@{
@Html.Partial（“\u ShareView”，新的ShareModel（））
}
@foreach（Model.Workbooks中的var工作簿）
{
@ActionLink（workbook.Name，“Open”，“OpenAnalytics”，new{id=Model.id，workbook=workbook.Name}）
}
}
@节脚本
{
@等待Html.PartialAsync（“验证脚本”）
功能显示共享视图（标题）{
var url=“@url.Action”（“ShowShareDialog”，“Home”）“+”？workbookTitle=“+encodeURI（标题）；
$（'#shareFormContainer'）。加载（url，
函数（）{
$（'shareFormModal'）.modal（“show”）；
////我们需要手动注册表单以进行验证，因为对话框是
////初始加载时不包括在页面中
$.validator.unobtrusive.parse（“#partialform”）；
//电子邮件验证
$.validator.addMethod（“isEmail”，
函数（值、元素、参数）{
//此处的TODO客户端验证逻辑
返回false；
});
$.validator.unobtrusive.adapters.add（“isEmail”，
[],
功能（选项）{
options.rules.isEmail={}；
options.messages[“isEmail”]=options.message；
});
});
}
}

谢谢您的建议。但是，它仍然不起作用-我看不到自定义错误消息。我用我这里的东西创建了一个要点，如果你能看一下，也许我遗漏了什么：@GeorgiKoemdzhiev you missing

options.rules.isEmail={}行。将其插入options.messages[“isEmail”]=options.message之前