Question

我想保存用户步骤，并将我的MVC索引视图中的每一行都作为一个表单。

我在foreach中使用HTML.Begin表单来构建各个表单。页面呈现没有错误，表单提交没有问题，但我无法绑定到控制器内的模型 - 因此所有提交的数据都会丢失。

我已经验证表单值是在提交表单时开始的：item.Completed = true＆amp; item.Completed = false＆amp; item.Comment = HELLO + WORLD +＆amp; item.FinalizeStepId = 1＆amp; item .StepId = 1，但控制器不接受它们，并且使用空值创建FinalizeStepViewModel对象。

那么如何让表单正确传回数据呢？

这可能是我在Stackoverflow上的第二个问题，所以让我知道我可能需要添加的其他信息。

感谢。

===模特=====

public class FinalizeStepViewModel
    {
    public int FinalizeStepId { get; set; }

    // foreign key from Step table
    public int StepId { get; set; }

    // name of taks from Step table 
    public string StepDesc { get; set; }

    [DisplayName("Review Data")]
    public string ReviewFormulaValue { get; set; }

    [Required]
    public bool Completed { get; set; }

    [DisplayName("Fiscal Year")]
    public int FiscalYear { get; set; }

    // Period for the adjustment
    [Required]
    public int Period { get; set; }

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

    [Required]
    [DisplayName("Created By")]
    public string CreatedBy { get; set; }

    [Required]
    [DisplayName("Created At")]
    public DateTime CreatedAt { get; set; }

    public string Comment { get; set; }

====查看========== @model IEnumerable

@ { ViewBag.Title =＆＃34;索引＆＃34 ;;

// is everything completed, if yes => enabled
string alldone = "enabled";

}

<h2>Finalize Checklist</h2>


<table class="table">
    <tr>
        <th>
            Completed
        </th>
        <th>
            Finalized Task
        </th>
        <th>
            Review Data
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Comment)
        </th>
        <th></th>
        <th></th>
        @*<th>
                @Html.DisplayNameFor(model => model.FiscalYear)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.Period)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.CreatedBy)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.CreatedAt)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.UserID)
            </th>*@
        <th></th>
    </tr>

    @foreach (var item in Model)
    {
        //<form action="/FinalizeSteps/Checklist/" method="post">
        //@using (Html.BeginForm("Login", "Account", FormMethod.Post))
        //// <form action="/Account/Login" action="post">

        using (Html.BeginForm("EditFromChecklist", "FinalizeSteps", FormMethod.Post, new { finalizeStepPassed = Model }))
        {
            <tr>
                <td>
                    <div class="form-group" style="text-align: center; vertical-align: text-top;">
                        <div class="checkbox">
                            @Html.EditorFor(modelItem => item.Completed)
                            @if (item.Completed == false) { alldone = "disabled"; }
                        </div>
                    </div>
                </td>
                <td>
                    <h4>@Html.DisplayFor(modelItem => item.StepDesc)</h4>
                </td>
                <td style="text-align: center;">
                    @Html.DisplayFor(modelItem => item.ReviewFormulaValue)

                </td>
                <td>
                    <div class="form-group" style="width: 300px;">
                        @Html.EditorFor(modelItem => item.Comment, new { htmlAttributes = new { @class = "form-control" } })
                        @Html.ValidationMessageFor(modelItem => item.Comment, "", new { @class = "text-danger" })
                    </div>

                </td>
                <td>
                    <div class="form-group">
                        @Html.EditorFor(modelItem => item.FinalizeStepId, new { htmlAttributes = new { @class = "form-control" } })
                        @Html.ValidationMessageFor(modelItem => item.FinalizeStepId, "", new { @class = "text-danger" })
                    </div>

                </td>
                <td>
                    <div class="form-group">
                        @Html.EditorFor(modelItem => item.StepId, new { htmlAttributes = new { @class = "form-control" } })
                        @Html.ValidationMessageFor(modelItem => item.FinalizeStepId, "", new { @class = "text-danger" })
                    </div>

                </td>
                @*<td>
                        @Html.DisplayFor(modelItem => item.FiscalYear)
                    </td>
                    <td>
                        @Html.DisplayFor(modelItem => item.Period)
                    </td>
                    <td>
                        @Html.DisplayFor(modelItem => item.CreatedBy)
                    </td>
                    <td>
                        @Html.DisplayFor(modelItem => item.CreatedAt)
                    </td>
                    <td>
                        @Html.DisplayFor(modelItem => item.UserID)
                    </td>*@
                <td>
                    <div class="form-group">
                        <input type="submit" value="Save" class="btn btn-default" />
                    </div>
                    @Html.ActionLink("Save", "EditFromChecklist", new { FinalizeStepId = item.FinalizeStepId, StepId = item.StepId, Completed = item.Completed, Comment = item.Comment })

                    @*@Html.ActionLink("Edit", "Edit", new { id = item.FinalizeStepId }) |
                        @Html.ActionLink("Details", "Details", new { id = item.FinalizeStepId }) |
                        @Html.ActionLink("Delete", "Delete", new { id = item.FinalizeStepId })*@
                </td>
            </tr>
        }
    }

</table>

===控制器方法====

    [HttpPost]       
    public ActionResult EditFromChecklist([Bind(Include = "FinalizeStepId,StepId,Completed,Comment")] FinalizeStepViewModel finalizeStepPassed)
     {

        // Do we have a FinalizeStepId?
        if (finalizeStepPassed.FinalizeStepId != 0)
        {
            // Yes, this is an edit

...

Answer 1

您应该绑定到IList而不是IEnumerable，而不是

@foreach (var item in Model)
{
    @Html.EditorFor(modelItem => item.Completed)
}

使用此语法

@for( int i=0; i < Model.Count; i++ )
{
    @Html.EditorFor(modelItem => Model[i].Completed)
}

以前的主题也讨论了这个问题：How to pass IEnumerable list to controller in MVC including checkbox state?

Answer 2

将EditFromChecklist操作的参数从finalizeStepPassed更改为item。

或者您可以使用部分视图提交数据。

_FinalizeStepPartial.cshtml

@model FinalizeStepViewModel

using (Html.BeginForm("EditFromChecklist", "FinalizeSteps"))
{
    @Html.EditorFor(model => model.Completed)
    // rest of your form
}

并在循环内部的主视图中调用partial

@foreach (var item in Model)
{
    @Html.Partial("_FinalizeStepPartial",item)
}

HTMLC表单中的空值来自MVC视图

2 个答案: