如何在 VB .NET 庫中生成 PDF 文件 | IronPDF

# SSRS itself is server-based, but the in-process LocalReport API
# ships via Microsoft's ReportViewerControl packages (latest 150.1652.0,
# June 2024 — .NET Framework 4.0–4.8.1 only).
dotnet remove package Microsoft.ReportingServices.ReportViewerControl.WebForms
dotnet remove package Microsoft.ReportingServices.ReportViewerControl.Winforms

# If your project used the community .NET Core port, remove it too:
# dotnet remove package ReportViewerCore.NETCore

# Install IronPDF
dotnet add package IronPdf

// Add at application startup
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY";

' Add at application startup
IronPdf.License.LicenseKey = "YOUR-LICENSE-KEY"

// Before: SSRS
using Microsoft.Reporting.WebForms;
using Microsoft.Reporting.WinForms;

// After: IronPDF
using IronPdf;
using IronPdf.Rendering;

Imports Microsoft.Reporting.WebForms
Imports Microsoft.Reporting.WinForms

' After: IronPDF
Imports IronPdf
Imports IronPdf.Rendering

// SSRS - SQL Server Reporting Services
using System;
using System.Data;
using System.Data.SqlClient;
using Microsoft.Reporting.WebForms;
using System.IO;

class SSRSHtmlToPdf
{
    static void Main()
    {
        // Create a ReportViewer instance
        var reportViewer = new ReportViewer();
        reportViewer.ProcessingMode = ProcessingMode.Local;

        // Load RDLC report definition
        reportViewer.LocalReport.ReportPath = "Report.rdlc";

        // Add HTML content as a parameter or dataset
        var htmlContent = "<h1>Hello World</h1><p>This is HTML content.</p>";
        var param = new ReportParameter("HtmlContent", htmlContent);
        reportViewer.LocalReport.SetParameters(param);

        // Render the report to PDF
        string mimeType, encoding, fileNameExtension;
        string[] streams;
        Warning[] warnings;

        byte[] bytes = reportViewer.LocalReport.Render(
            "PDF",
            null,
            out mimeType,
            out encoding,
            out fileNameExtension,
            out streams,
            out warnings);

        File.WriteAllBytes("output.pdf", bytes);
    }
}

Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports Microsoft.Reporting.WebForms
Imports System.IO

Class SSRSHtmlToPdf
    Shared Sub Main()
        ' Create a ReportViewer instance
        Dim reportViewer As New ReportViewer()
        reportViewer.ProcessingMode = ProcessingMode.Local

        ' Load RDLC report definition
        reportViewer.LocalReport.ReportPath = "Report.rdlc"

        ' Add HTML content as a parameter or dataset
        Dim htmlContent As String = "<h1>Hello World</h1><p>This is HTML content.</p>"
        Dim param As New ReportParameter("HtmlContent", htmlContent)
        reportViewer.LocalReport.SetParameters(param)

        ' Render the report to PDF
        Dim mimeType As String
        Dim encoding As String
        Dim fileNameExtension As String
        Dim streams As String()
        Dim warnings As Warning()

        Dim bytes As Byte() = reportViewer.LocalReport.Render( _
            "PDF", _
            Nothing, _
            mimeType, _
            encoding, _
            fileNameExtension, _
            streams, _
            warnings)

        File.WriteAllBytes("output.pdf", bytes)
    End Sub
End Class

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class IronPdfHtmlToPdf
{
    static void Main()
    {
        // Create a ChromePdfRenderer instance
        var renderer = new ChromePdfRenderer();

        // Convert HTML string to PDF
        var htmlContent = "<h1>Hello World</h1><p>This is HTML content.</p>";
        var pdf = renderer.RenderHtmlAsPdf(htmlContent);

        // Save the PDF file
        pdf.SaveAs("output.pdf");
    }
}

Imports IronPdf
Imports System

Class IronPdfHtmlToPdf
    Shared Sub Main()
        ' Create a ChromePdfRenderer instance
        Dim renderer = New ChromePdfRenderer()

        ' Convert HTML string to PDF
        Dim htmlContent = "<h1>Hello World</h1><p>This is HTML content.</p>"
        Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)

        ' Save the PDF file
        pdf.SaveAs("output.pdf")
    End Sub
End Class

// SSRS - SQL Server Reporting Services
using System;
using System.IO;
using System.Net;
using Microsoft.Reporting.WebForms;

class SSRSUrlToPdf
{
    static void Main()
    {
        // Download HTML content from URL
        string url = "https://example.com";
        string htmlContent;

        using (var client = new WebClient())
        {
            htmlContent = client.DownloadString(url);
        }

        // Create RDLC report with header/footer configuration
        var reportViewer = new ReportViewer();
        reportViewer.ProcessingMode = ProcessingMode.Local;
        reportViewer.LocalReport.ReportPath = "WebReport.rdlc";

        // Set parameters for header and footer
        var parameters = new ReportParameter[]
        {
            new ReportParameter("HeaderText", "Company Report"),
            new ReportParameter("FooterText", "Page " + DateTime.Now.ToString()),
            new ReportParameter("HtmlContent", htmlContent)
        };
        reportViewer.LocalReport.SetParameters(parameters);

        // Render to PDF
        string mimeType, encoding, fileNameExtension;
        string[] streams;
        Warning[] warnings;

        byte[] bytes = reportViewer.LocalReport.Render(
            "PDF", null, out mimeType, out encoding,
            out fileNameExtension, out streams, out warnings);

        File.WriteAllBytes("webpage.pdf", bytes);
    }
}

Imports System
Imports System.IO
Imports System.Net
Imports Microsoft.Reporting.WebForms

Class SSRSUrlToPdf
    Shared Sub Main()
        ' Download HTML content from URL
        Dim url As String = "https://example.com"
        Dim htmlContent As String

        Using client As New WebClient()
            htmlContent = client.DownloadString(url)
        End Using

        ' Create RDLC report with header/footer configuration
        Dim reportViewer As New ReportViewer()
        reportViewer.ProcessingMode = ProcessingMode.Local
        reportViewer.LocalReport.ReportPath = "WebReport.rdlc"

        ' Set parameters for header and footer
        Dim parameters As ReportParameter() = {
            New ReportParameter("HeaderText", "Company Report"),
            New ReportParameter("FooterText", "Page " & DateTime.Now.ToString()),
            New ReportParameter("HtmlContent", htmlContent)
        }
        reportViewer.LocalReport.SetParameters(parameters)

        ' Render to PDF
        Dim mimeType As String, encoding As String, fileNameExtension As String
        Dim streams As String()
        Dim warnings As Warning()

        Dim bytes As Byte() = reportViewer.LocalReport.Render(
            "PDF", Nothing, mimeType, encoding,
            fileNameExtension, streams, warnings)

        File.WriteAllBytes("webpage.pdf", bytes)
    End Sub
End Class

// NuGet: Install-Package IronPdf
using IronPdf;
using IronPdf.Rendering;
using System;

class IronPdfUrlToPdf
{
    static void Main()
    {
        // Create a ChromePdfRenderer instance
        var renderer = new ChromePdfRenderer();

        // Configure rendering options with header and footer
        renderer.RenderingOptions.HtmlHeader = new HtmlHeaderFooter()
        {
            HtmlFragment = "<div style='text-align:center'>Company Report</div>"
        };

        renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter()
        {
            HtmlFragment = "<div style='text-align:center'>Page {page} of {total-pages} - " + DateTime.Now.ToString("MM/dd/yyyy") + "</div>"
        };

        // Convert URL to PDF
        string url = "https://example.com";
        var pdf = renderer.RenderUrlAsPdf(url);

        // Save the PDF file
        pdf.SaveAs("webpage.pdf");
    }
}

Imports IronPdf
Imports IronPdf.Rendering
Imports System

Class IronPdfUrlToPdf
    Shared Sub Main()
        ' Create a ChromePdfRenderer instance
        Dim renderer As New ChromePdfRenderer()

        ' Configure rendering options with header and footer
        renderer.RenderingOptions.HtmlHeader = New HtmlHeaderFooter() With {
            .HtmlFragment = "<div style='text-align:center'>Company Report</div>"
        }

        renderer.RenderingOptions.HtmlFooter = New HtmlHeaderFooter() With {
            .HtmlFragment = "<div style='text-align:center'>Page {page} of {total-pages} - " & DateTime.Now.ToString("MM/dd/yyyy") & "</div>"
        }

        ' Convert URL to PDF
        Dim url As String = "https://example.com"
        Dim pdf = renderer.RenderUrlAsPdf(url)

        ' Save the PDF file
        pdf.SaveAs("webpage.pdf")
    End Sub
End Class

// SSRS - SQL Server Reporting Services
using System;
using System.Data;
using System.Data.SqlClient;
using Microsoft.Reporting.WebForms;
using System.IO;

class SSRSDatabaseReport
{
    static void Main()
    {
        // Create a ReportViewer instance
        var reportViewer = new ReportViewer();
        reportViewer.ProcessingMode = ProcessingMode.Local;
        reportViewer.LocalReport.ReportPath = "SalesReport.rdlc";

        // Create database connection and fetch data
        string connString = "Server=localhost;Database=SalesDB;Integrated Security=true;";
        using (var connection = new SqlConnection(connString))
        {
            var adapter = new SqlDataAdapter("SELECT * FROM Sales", connection);
            var dataSet = new DataSet();
            adapter.Fill(dataSet, "Sales");

            // Bind data to report
            var dataSource = new ReportDataSource("SalesDataSet", dataSet.Tables[0]);
            reportViewer.LocalReport.DataSources.Clear();
            reportViewer.LocalReport.DataSources.Add(dataSource);
        }

        // Render to PDF
        string mimeType, encoding, fileNameExtension;
        string[] streams;
        Warning[] warnings;

        byte[] bytes = reportViewer.LocalReport.Render(
            "PDF", null, out mimeType, out encoding,
            out fileNameExtension, out streams, out warnings);

        File.WriteAllBytes("sales-report.pdf", bytes);
    }
}

Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports Microsoft.Reporting.WebForms
Imports System.IO

Class SSRSDatabaseReport
    Shared Sub Main()
        ' Create a ReportViewer instance
        Dim reportViewer As New ReportViewer()
        reportViewer.ProcessingMode = ProcessingMode.Local
        reportViewer.LocalReport.ReportPath = "SalesReport.rdlc"

        ' Create database connection and fetch data
        Dim connString As String = "Server=localhost;Database=SalesDB;Integrated Security=true;"
        Using connection As New SqlConnection(connString)
            Dim adapter As New SqlDataAdapter("SELECT * FROM Sales", connection)
            Dim dataSet As New DataSet()
            adapter.Fill(dataSet, "Sales")

            ' Bind data to report
            Dim dataSource As New ReportDataSource("SalesDataSet", dataSet.Tables(0))
            reportViewer.LocalReport.DataSources.Clear()
            reportViewer.LocalReport.DataSources.Add(dataSource)
        End Using

        ' Render to PDF
        Dim mimeType As String, encoding As String, fileNameExtension As String
        Dim streams As String()
        Dim warnings As Warning()

        Dim bytes As Byte() = reportViewer.LocalReport.Render("PDF", Nothing, mimeType, encoding, fileNameExtension, streams, warnings)

        File.WriteAllBytes("sales-report.pdf", bytes)
    End Sub
End Class

// NuGet: Install-Package IronPdf
using IronPdf;
using System;
using System.Data;
using System.Data.SqlClient;
using System.Text;

class IronPdfDatabaseReport
{
    static void Main()
    {
        // Create database connection and fetch data
        string connString = "Server=localhost;Database=SalesDB;Integrated Security=true;";
        var dataTable = new DataTable();

        using (var connection = new SqlConnection(connString))
        {
            var adapter = new SqlDataAdapter("SELECT * FROM Sales", connection);
            adapter.Fill(dataTable);
        }

        // Build HTML table from data
        var htmlBuilder = new StringBuilder();
        htmlBuilder.Append("<h1>Sales Report</h1><table border='1'><tr>");

        foreach (DataColumn column in dataTable.Columns)
            htmlBuilder.Append($"<th>{column.ColumnName}</th>");
        htmlBuilder.Append("</tr>");

        foreach (DataRow row in dataTable.Rows)
        {
            htmlBuilder.Append("<tr>");
            foreach (var item in row.ItemArray)
                htmlBuilder.Append($"<td>{item}</td>");
            htmlBuilder.Append("</tr>");
        }
        htmlBuilder.Append("</table>");

        // Convert to PDF
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderHtmlAsPdf(htmlBuilder.ToString());
        pdf.SaveAs("sales-report.pdf");
    }
}

Imports IronPdf
Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports System.Text

Class IronPdfDatabaseReport
    Shared Sub Main()
        ' Create database connection and fetch data
        Dim connString As String = "Server=localhost;Database=SalesDB;Integrated Security=true;"
        Dim dataTable As New DataTable()

        Using connection As New SqlConnection(connString)
            Dim adapter As New SqlDataAdapter("SELECT * FROM Sales", connection)
            adapter.Fill(dataTable)
        End Using

        ' Build HTML table from data
        Dim htmlBuilder As New StringBuilder()
        htmlBuilder.Append("<h1>Sales Report</h1><table border='1'><tr>")

        For Each column As DataColumn In dataTable.Columns
            htmlBuilder.Append($"<th>{column.ColumnName}</th>")
        Next
        htmlBuilder.Append("</tr>")

        For Each row As DataRow In dataTable.Rows
            htmlBuilder.Append("<tr>")
            For Each item In row.ItemArray
                htmlBuilder.Append($"<td>{item}</td>")
            Next
            htmlBuilder.Append("</tr>")
        Next
        htmlBuilder.Append("</table>")

        ' Convert to PDF
        Dim renderer As New ChromePdfRenderer()
        Dim pdf = renderer.RenderHtmlAsPdf(htmlBuilder.ToString())
        pdf.SaveAs("sales-report.pdf")
    End Sub
End Class

var data = await _dbContext.Sales.ToListAsync();
// Then bind to HTML template

Dim data = Await _dbContext.Sales.ToListAsync()
' Then bind to HTML template

// Your own parameter form, then:
var pdf = GenerateReport(startDate, endDate, region);

' Your own parameter form, then:
Dim pdf = GenerateReport(startDate, endDate, region)

// Using Hangfire or similar
RecurringJob.AddOrUpdate("weekly-report",
    () => GenerateAndEmailReport(), Cron.Weekly);