如何使用 MVC Power BI Embedded 传递变量？

Question

我正在使用 visual studio 中嵌入的 Power BI 构建应用程序。我在控制器中的报告操作中添加了用户名和角色，对应于我要嵌入的实际报告中的用户名和角色。我想将用户名作为变量从 index.cshtml 中的文本框传递给 Report 操作；当此值被硬编码时，报告会加载并嵌入，但我无法将其作为变量传递！

这是控制器中的 ActionResult -

public async Task<ActionResult> Report(string reportId)
{
    //This is where I'm trying to get the variable from the textbox
    username = Request["centreID"].ToString();

    using (var client = this.CreatePowerBIClient())
    {

        var reportsResponse = await client.Reports.GetReportsAsync(this.workspaceCollection, this.workspaceId);
        var report = reportsResponse.Value.FirstOrDefault(r => r.Id == reportId);
        IEnumerable<string> roles = new List<string>() { "xxxxxxxx" };

// I can hardcode the username here, and it works, but can't pass in a variable from the html like above
        //string username = "xxxxxx";

        //username = this.username;
        var embedToken = PowerBIToken.CreateReportEmbedToken(this.workspaceCollection, this.workspaceId, report.Id, username, roles);
        var viewModel = new ReportViewModel
        {
            Report = report,
            AccessToken = embedToken.Generate(this.accessKey)
        };

        return View(viewModel);
    }
}

在模型中我放置了 get 和 sets

public string username { get; set; }

这是我用过的html；我之前在控制器中用 void 方法测试过它，它确实将变量传递给控制器

@using (Html.BeginForm("Report", "Dashboard"))
{
    @Html.Label("Enter Centre ID")
    @Html.TextBox("centreID")

    <input type="submit" value="submit" />
}
</span>
</a>

Answer 1

您的方法需要一个 reportId，但是当您调用它时，没有使用该名称的控件。现在假设您在 ViewBag 中的上一步中获得了该值，那么您的代码需要按以下方式更新：

@using (Html.BeginForm("Report", "Dashboard"))
{
   @Html.Label("Enter Centre ID")
   @Html.TextBox("centreID")
   <input type="hidden" name="reportId " value="@(ViewBag.reportId ?? "")" />
   <input type="submit" value="submit" />
}

还有你的方法，比如：

public async Task<ActionResult> Report(string reportId, string centreID)
{
//This is where I'm trying to get the variable from the textbox
using (var client = this.CreatePowerBIClient())
{

    var reportsResponse = await client.Reports.GetReportsAsync(this.workspaceCollection, this.workspaceId);
    var report = reportsResponse.Value.FirstOrDefault(r => r.Id == reportId);
    IEnumerable<string> roles = new List<string>() { "xxxxxxxx" };

     // I can hardcode the username here, and it works, but can't pass in a variable from the html like above
    var embedToken = PowerBIToken.CreateReportEmbedToken(this.workspaceCollection, this.workspaceId, report.Id, centreID, roles);
    var viewModel = new ReportViewModel
    {
        Report = report,
        AccessToken = embedToken.Generate(this.accessKey)
    };

    return View(viewModel);
}
}

如何使用 MVC Power BI Embedded 传递变量？

How can I pass variables using MVC Power BI Embedded?

c#

asp.net-mvc

powerbi

powerbi-embedded