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Binway's avatar
Binway
Icon for Helper II rankHelper II
4 years ago
Solved

Embedded Lab cannot convert from string to system.guid

I am following some lab content I found that demonstrates how to embed Power BI content into a web app.  The PDfs are fairly straightforward but when I go to debug the code I get an error in the PBIEmbeddedManager.cs file that says "cannot convert from string to system.guid."

It is in relation to this line in the public class PbiEmbeddedManager:

private static readonly string workspaceId = ConfigurationManager.AppSettings["app-workspace-id"];

The code is picking the id up from the Web.config file which has the workspaceid from the url as instructed in the notes.  Unfortunately I have no idea how to alter the variable to a GUID or where to put it in the code.  It seems I need to add another class?? but I am not certain.

Thanks in advance.

 

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  • Binway's avatar
    Binway
    4 years ago

    Got it working.

    Had to add a bit of extra to the code supplied in git to some classes as per below:

          /* renamed the variable to indicate it is a string for workspaceId and reportId*/
        private static readonly string strworkspaceId = ConfigurationManager.AppSettings["app-workspace-id"];
        private static string datasetId = ConfigurationManager.AppSettings["dataset-id"];
        private static readonly string strreportId = ConfigurationManager.AppSettings["report-id"];

    Then in this class

      public static async Task<ReportEmbeddingData> GetReportEmbeddingData()
        {

            PowerBIClient pbiClient = GetPowerBiClient();
            /* in this class add the conversion to GUID*/
            Guid workspaceId = Guid.Parse(strworkspaceId);
            Guid reportId = Guid.Parse(strreportId);

            var report = await pbiClient.Reports.GetReportInGroupAsync(workspaceId, reportId);
            var embedUrl = report.EmbedUrl;
            var reportName = report.Name;

    But in here it has to go back to string in the GUID("D") format

      return new ReportEmbeddingData
            {
                /*in here converted the GUID back to string*/
                reportId = reportId.ToString("D"),
                reportName = reportName,

    With the report working.

1 Reply

  • Binway's avatar
    Binway
    Icon for Helper II rankHelper II
    4 years ago

    Got it working.

    Had to add a bit of extra to the code supplied in git to some classes as per below:

          /* renamed the variable to indicate it is a string for workspaceId and reportId*/
        private static readonly string strworkspaceId = ConfigurationManager.AppSettings["app-workspace-id"];
        private static string datasetId = ConfigurationManager.AppSettings["dataset-id"];
        private static readonly string strreportId = ConfigurationManager.AppSettings["report-id"];

    Then in this class

      public static async Task<ReportEmbeddingData> GetReportEmbeddingData()
        {

            PowerBIClient pbiClient = GetPowerBiClient();
            /* in this class add the conversion to GUID*/
            Guid workspaceId = Guid.Parse(strworkspaceId);
            Guid reportId = Guid.Parse(strreportId);

            var report = await pbiClient.Reports.GetReportInGroupAsync(workspaceId, reportId);
            var embedUrl = report.EmbedUrl;
            var reportName = report.Name;

    But in here it has to go back to string in the GUID("D") format

      return new ReportEmbeddingData
            {
                /*in here converted the GUID back to string*/
                reportId = reportId.ToString("D"),
                reportName = reportName,

    With the report working.