.NET Core Blazor 应用程序:如何在页面之间传递数据? [英] .NET Core Blazor App: How to pass data between pages?

问题描述

我刚刚开始学习如何使用 Blazor 模板制作网站.但我不知道如何将数据从一页传递到另一页.它与 .NET CORE MVC Web 应用程序有点不同，我找不到这方面的示例.

I just started learning how to make websites with using Blazor template. But I don't know how to pass the data from one page to another. It is a bit different than .NET CORE MVC web application and I couldn't find an example for this.

    <p>Solve This problem: @rnd1 * @rnd2 = ?</p>

    <input type="text" name="result" bind="@result" />
    <input type="button" onclick="@calculate" value="Submit" />

我想将文本框中的值发送到另一个页面.我该怎么做?

I want to send the value in my textbox to the another page. How can I do this?

推荐答案

您可以将其作为参数传递.

You can pass it as a parameter.

在您要导航到的页面中，将参数添加到您的路由中:

In the page you want to navigate to, add the parameter to your route:

@page "/navigatetopage/{myvalue}"

并确保该参数存在于该页面中:

and make sure the parameter exists in that page:

[Parameter]
private string myvalue{ get; set; }

在同一页面中，您可以选择:

In the same page you can pick that up in:

protected override void OnParametersSet()
{
    //the param will be set now
    var test = myvalue;
}

现在在您的起始页中，确保导航到包含值的第二页:

Now in your start page make sure to navigate to the second page including the value:

uriHelper.NavigateTo($"/navigatetopage/{result}");

那个uriHelper需要像这样注入:

That uriHelper needs to be injected like this:

@inject Microsoft.AspNetCore.Blazor.Services.IUriHelper uriHelper

更新 PREVIEW-9在 preview-9 上你应该使用 navigationManager 而不是 uriHelper，它还有一个 NavigateTo 方法

UPDATE PREVIEW-9 on preview-9 you should use navigationManager instead of uriHelper, it also has a NavigateTo method

@inject Microsoft.AspNetCore.Components.NavigationManager navigationManager

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