使用 IJSRuntime 将引导模式包装在 blazor 中

Roy*_*ris 3 c# bootstrap-modal blazor

是否可以通过 IJSRuntime 获取对 Bootstrap 5 的引用bootstrap.Modal并保存对该实例的引用以供以后使用?

例子:

我可以用这种方法显示模式:

await _jsRuntime.InvokeVoidAsync("eval", $"new bootstrap.Modal(document.getElementById('myId')).show()");
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但我不能以同样的方式隐藏它,因为我需要存储对new bootstrap.Modal创作的引用。我怎样才能动态地做到这一点(我有一个引导模式组件)而不必编写javascript?有什么方法可以保存变量并稍后通过 IJSRuntime 引用它们吗?

Roy*_*ris 5

经过大量搜索后,我发现这eval永远不是解决方案。我不是 JavaScript 开发人员,但我得到了这个:

BootstrapModal.razor

@inject IJSRuntime _jsRuntime;

<div class="modal fade" id="@Id" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            @ChildContent
        </div>
    </div>
</div>

@code {
    [Parameter]
    public string Id { get; set; }

    [Parameter]
    public RenderFragment ChildContent { get; set; }

    public dynamic Parameter { get; private set; }

    protected override void OnInitialized()
    {
        if (string.IsNullOrEmpty(Id))
        {
            Id = Guid.NewGuid().ToString();
        }
    }

    public async Task Show(dynamic parameter = null)
    {
        Parameter = parameter;

        await _jsRuntime.InvokeVoidAsync("BootstrapModal.ShowModal", Id);
    }

    public async Task Hide()
    {
        await _jsRuntime.InvokeVoidAsync("BootstrapModal.HideModal");
    }
}

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BootstrapModalInterop.js

window.BootstrapModal = {};
window.BootstrapModal.OpenedModal = null;

window.BootstrapModal.ShowModal = (id) => {
    if (window.BootstrapModal.OpenedModal != null) {
        window.BootstrapModal.HideModal();
    }

    window.BootstrapModal.OpenedModal = new bootstrap.Modal(document.getElementById(id));
    window.BootstrapModal.OpenedModal.show();
}

window.BootstrapModal.HideModal = () => {
    if (window.BootstrapModal.OpenedModal == null) {
        return;
    }

    window.BootstrapModal.OpenedModal.hide();
    window.BootstrapModal.OpenedModal = null;
}
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确保您BootstrapModalInterop.js从主机文件中引用该文件。

您现在可以从 blazor 代码本地打开和关闭模式。

用法示例:

...
<button class="btn btn-danger" @onclick="async () => await _deleteModal.Show(discountCode.Id)"><i class="fas fa-trash"></i></button>
...

<BootstrapModal @ref="_deleteModal">
    <div class="modal-header">
        <h5 class="modal-title">
            Delete Discount Code
        </h5>
    </div>
    <div class="modal-body">
        <p>
            Are you sure that you want to delete this discount code? This cannot be undone!
        </p>
    </div>
    <div class="modal-footer">
        <button @onclick="async () => await _deleteModal.Hide()" class="btn btn-secondary">Close</button>
        <button @onclick="async () => await Delete((int)_deleteModal.Parameter)" class="btn btn-outline-danger">Delete</button>
    </div>
</BootstrapModal>

@code 
{
  private BootstrapModal _deleteModal;
}
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参数属性是可选的,但我用它来解析我想用它删除的项目的 ID。稍后我可以使用 获取此 ID (int)_deleteModal.Parameter。我选择了一种dynamic类型,这样我就可以解析任何内容。