Csharp 组件'；EditForm'；使用与包含子内容元素'；授权'；相同的参数名称('；上下文'；)

<AuthorizeView/>和<EditForm>都有ChildContent，它们将值传递给使用RenderFragment<T>.默认情况下，该值称为context.然而，由于这种嵌套，值context在<EditForm/>内是不明确的.为了避免这种歧义，请为上下文声明一个不同的名称，而不是默认的context.您可以使用Context="newContextName"来完成此操作.例如，您可以拨打AuthorizeView的context authContext，如下所示:

@page "/"

@using System.ComponentModel.DataAnnotations;
@using System.Globalization;
@inject ILogger<FreightCompany> Logger

@* here we declare a different variable name for the context of AuthorizeView *@
<AuthorizeView Context="authContext">
    <Authorized>

        <EditForm EditContext="@editContext" OnSubmit="@Submit">
            <DataAnnotationsValidator />
            <ValidationSummary />

            <div class="row">
                <label>Link Name: @_model!.LinkName</label>
            </div>
            <div class="row">
                <label>Link Address:</label>
                <InputText type="time" class="m-1 form-control form-control-sm" @bind-Value="_model.LinkAddress" />
            </div>
            <div class="row">
                <button class="form-control btn btn-primary m-1" @onclick='()=>submitId="1"' type="submit">Submit</button>
                <button class="form-control btn btn-success m-1" @onclick='()=>submitId="2"' type="submit">Submit 2</button>
            </div>

        </EditForm>

        <div class="container">
            <div class="row">
                <table>
                    @if (_list.Count() > 0)
                    {
                        @foreach (var item in _list)
                        {
                            <tr>
                                <td><a href="@_model.LinkAddress">@_model.LinkName</a></td>                                
                            </tr>
                        }
                    }
                </table>
            </div>
        </div>

    </Authorized>
    <NotAuthorized>
        <p>Please signed in.</p>
    </NotAuthorized>
</AuthorizeView>


@code {
    string submitId = "";

    private EditContext? editContext;

    public FreightCompany? _model { get; set; }
    List<FreightCompany> _list = new();

    protected override void OnInitialized()
    {
        _model ??= new();        
        editContext = new(_model);
    }

    private void Submit()
    {
        switch (submitId)
        {
            case "1":
                Logger.LogInformation("Submit 1 pressed");
                var isValidForm = editContext!.Validate();
                if (isValidForm)
                {
                    _list.Add(_model!);
                    _model = new();
                    editContext = new(_model);
                }
                break;
            case "2":
                Logger.LogInformation("Submit 2 pressed");

                foreach (var item in _list)
                {
                    // SqliteDataAccess.SaveFreightLink(item);
                }

                break;
        }
        Logger.LogInformation("Model.Id = {Id}", _model?.Id);
    }
}

您也可以为Context <EditForm />声明一个不同的名称.您也可以显式地命名这两个上下文.这不重要只是名字不能一样.

有关更详细的解释，请查看

• Blazor University - Passing data to RenderFragment个
• Microsoft Docs - Blazor templated components个