How do I export pdf from crystal report using ASP.NET core web api

See more:

CrystalReports

ASP.NET-Core

Hello everyone,

I am creating an application using reactjs as a frontend, asp.net 6.0 as a backend, I want to create report in crystal report and export this report to PDF and Excel using asp.net core web api.

I have written code in asp.net but some error in
ReportDocument reportDocument = new ReportDocument();

I am also sending error screenshot and code below..

Code is below :

public async Task<iactionresult> GenerateReport()
{
    try
    {
        string rootDirectoryPath = _hostingEnvironment.ContentRootPath;
        string reportPath = Path.Combine(_hostingEnvironment.ContentRootPath, "Reports" + "\\AccountReport.rpt");
        ReportDocument reportDocument = new ReportDocument();
        reportDocument.Load(reportPath);

        System.IO.MemoryStream stream = new System.IO.MemoryStream();
       
        stream.Seek(0, System.IO.SeekOrigin.Begin);
       
        return File(stream, "application/pdf", "report.pdf");
    }
    catch (Exception ex)
    {
        
        return StatusCode(500, $"Internal server error: {ex.Message}");
    }
}

Error is below :

FileNotFoundException: Could not load file or assembly 'System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

The system cannot find the file specified.

Please help me to solve this problem..

Thanks

What I have tried:

I have install all related Nuget Packges