技术标签: GcPDF 2024 Excel to PDF
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Winnovative Excel to PDF Converter can be used in any type of .NET application to convert Excel documents to PDF. The integration with existing .NET applications is extremely easy and no installation is necessary in order to run the converter. The downloaded archive contains the assembly for .NET and demo applications for Excel to PDF conversion. The result of conversion can be produced in a memory buffer, in a file on disk or in a stream. The Excel to PDF Converter does not require Microsoft Excel or other third party tools. |
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Features |
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Convert Excel XLS and XLSX documents to PDF Does not require Microsoft Excel or other third party tools Convert to memory buffer, file, stream or to a PDF object for further processing Convert all the worksheets or select the worksheets in workbook to convert Set PDF page size to a standard (A4, etc.) or a custom size Set PDF page orientation and PDF document margins Add headers and footers with page numbering to PDF pages Append or prepend external PDF files to conversion result Password protect and set permissions of the PDF document Add a digital signature to generated PDF document Add graphic elements to generated PDF document Generate PDF/A and PDF/X compliant documents Generate CMYK and Gray Scale PDF documents Edit existing PDF documents Merge multiple PDF documents in a single PDF document Split a PDF document in multiple PDF documents Support for .NET 4.0 framework and later Documentation and C# samples for all the features |
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Code Sample for Excel to PDF Conversion |
The code below was taken from the Excel to PDF demo application available for download in the Excel to PDF Converter archive. In this example an instance of the ExcelToPdfConverter class is constructed and used to convert an Excel file to a PDF document in a memory buffer. The resulted buffer is saved in a PDF file on disk. The demo also contains code for adding a header and a footer with page numbering to the resulted PDF document. |
private void btnExcelToPdf_Click(object sender, EventArgs e) { // Create an Excel to PDF converter object with default settings ExcelToPdfConverter excelToPdfConverter = new ExcelToPdfConverter(); // Set license key received after purchase to use the converter in licensed mode // Leave it not set to use the converter in demo mode excelToPdfConverter.LicenseKey = "P7GgsKSisKCwpr6gsKOhvqGivqmpqamwoA=="; // PDF Page Options // Set PDF page size which can be a predefined size like A4 or a custom size in points // Leave it not set to have a default A4 PDF page excelToPdfConverter.PdfDocumentOptions.PdfPageSize = SelectedPdfPageSize(); // Set PDF page orientation to Portrait or Landscape // Leave it not set to have a default Portrait orientation for PDF page excelToPdfConverter.PdfDocumentOptions.PdfPageOrientation = SelectedPdfPageOrientation(); // Set PDF page margins in points or leave them not set to have a PDF page without margins excelToPdfConverter.PdfDocumentOptions.LeftMargin = float.Parse(leftMarginTextBox.Text); excelToPdfConverter.PdfDocumentOptions.RightMargin = float.Parse(rightMarginTextBox.Text); excelToPdfConverter.PdfDocumentOptions.TopMargin = float.Parse(topMarginTextBox.Text); excelToPdfConverter.PdfDocumentOptions.BottomMargin = float.Parse(bottomMarginTextBox.Text); // Excel Content Destination and Spacing Options // Set Excel content destination in PDF page if (xLocationTextBox.Text.Length > 0) excelToPdfConverter.PdfDocumentOptions.X = float.Parse(xLocationTextBox.Text); if (yLocationTextBox.Text.Length > 0) excelToPdfConverter.PdfDocumentOptions.Y = float.Parse(yLocationTextBox.Text); if (contentWidthTextBox.Text.Length > 0) excelToPdfConverter.PdfDocumentOptions.Width = float.Parse(contentWidthTextBox.Text); if (contentHeightTextBox.Text.Length > 0) excelToPdfConverter.PdfDocumentOptions.Height = float.Parse(contentHeightTextBox.Text); // Set Excel content top and bottom spacing or leave them not set to have no spacing for the Excel content excelToPdfConverter.PdfDocumentOptions.TopSpacing = float.Parse(topSpacingTextBox.Text); excelToPdfConverter.PdfDocumentOptions.BottomSpacing = float.Parse(bottomSpacingTextBox.Text); // Scaling Options // Use this option to fit the Excel content width in PDF page width // By default this property is true and the Excel content can be resized to fit the PDF page width excelToPdfConverter.PdfDocumentOptions.FitWidth = fitWidthCheckBox.Checked; // Use this option to enable the Excel content stretching when its width is smaller than PDF page width // This property has effect only when FitWidth option is true // By default this property is false and the Excel content is not stretched excelToPdfConverter.PdfDocumentOptions.StretchToFit = stretchCheckBox.Checked; // Use this option to automatically dimension the PDF page to display the Excel content unscaled // This property has effect only when the FitWidth property is false // By default this property is true and the PDF page is automatically dimensioned when FitWidth is false excelToPdfConverter.PdfDocumentOptions.AutoSizePdfPage = autoSizeCheckBox.Checked; // Use this option to fit the Excel content height in PDF page height // If both FitWidth and FitHeight are true then the Excel content will resized if necessary to fit both width and height // preserving the aspect ratio at the same time // By default this property is false and the Excel content is not resized to fit the PDF page height excelToPdfConverter.PdfDocumentOptions.FitHeight = fitHeightCheckBox.Checked; // Use this option to render the whole Excel content into a single PDF page // The PDF page size is limited to 14400 points // By default this property is false excelToPdfConverter.PdfDocumentOptions.SinglePage = singlePageCheckBox.Checked; // Add Header // Enable header in the generated PDF document excelToPdfConverter.PdfDocumentOptions.ShowHeader = addHeaderCheckBox.Checked; // Draw header elements if (excelToPdfConverter.PdfDocumentOptions.ShowHeader) DrawHeader(excelToPdfConverter, true); // Add Footer // Enable footer in the generated PDF document excelToPdfConverter.PdfDocumentOptions.ShowFooter = addFooterCheckBox.Checked; // Draw footer elements if (excelToPdfConverter.PdfDocumentOptions.ShowFooter) DrawFooter(excelToPdfConverter, true, true); Cursor = Cursors.WaitCursor; string outPdfFile = @"DemoAppFiles\Output\ExcelToPdf.pdf"; try { string excelFile = excelFilePathTextBox.Text; // Convert the Excel document to a PDF document byte[] outPdfBuffer = excelToPdfConverter.ConvertExcelFile(excelFile); // Write the memory buffer in a PDF file System.IO.File.WriteAllBytes(outPdfFile, outPdfBuffer); } catch (Exception ex) { // The Excel to PDF conversion failed MessageBox.Show(String.Format("Excel to PDF Error. {0}", ex.Message)); return; } finally { Cursor = Cursors.Arrow; } // Open the created PDF document in default PDF viewer try { System.Diagnostics.Process.Start(outPdfFile); } catch (Exception ex) { MessageBox.Show(String.Format("Cannot open created PDF file '{0}'. {1}", outPdfFile, ex.Message)); } } /// <summary> /// Draw the header elements /// </summary> /// <param name="excelToPdfConverter">The Excel to PDF Converter object</param> /// <param name="drawHeaderLine">A flag indicating if a line should be drawn at the bottom of the header</param> private void DrawHeader(ExcelToPdfConverter excelToPdfConverter, bool drawHeaderLine) { string headerImagePath = System.IO.Path.Combine(Application.StartupPath, @"DemoAppFiles\Input\Images\logo.jpg"); // Set the header height in points excelToPdfConverter.PdfHeaderOptions.HeaderHeight = 60; // Set header background color excelToPdfConverter.PdfHeaderOptions.HeaderBackColor = Color.WhiteSmoke; // Set logo ImageElement headerImage = new ImageElement(5, 5, 100, 50, headerImagePath); excelToPdfConverter.PdfHeaderOptions.AddElement(headerImage); // Set header text TextElement headerText = new TextElement(0, 5, "Winnovative Excel to PDF Converter ", new System.Drawing.Font(new System.Drawing.FontFamily("Times New Roman"), 10, System.Drawing.GraphicsUnit.Point)); // Align the text at the right of the footer headerText.TextAlign = HorizontalTextAlign.Right; // Set text color headerText.ForeColor = Color.Navy; // Embed the text element font in PDF headerText.EmbedSysFont = true; // Add the text element to header excelToPdfConverter.PdfHeaderOptions.AddElement(headerText); if (drawHeaderLine) { // Calculate the header width based on PDF page size and margins float headerWidth = excelToPdfConverter.PdfDocumentOptions.PdfPageOrientation == PdfPageOrientation.Portrait ? excelToPdfConverter.PdfDocumentOptions.PdfPageSize.Width : excelToPdfConverter.PdfDocumentOptions.PdfPageSize.Height - excelToPdfConverter.PdfDocumentOptions.LeftMargin - excelToPdfConverter.PdfDocumentOptions.RightMargin; // Calculate header height float headerHeight = excelToPdfConverter.PdfHeaderOptions.HeaderHeight; // Create a line element for the bottom of the header LineElement headerLine = new LineElement(0, headerHeight - 1, headerWidth, headerHeight - 1); // Set line color headerLine.ForeColor = Color.Gray; // Add line element to the bottom of the header excelToPdfConverter.PdfHeaderOptions.AddElement(headerLine); } } /// <summary> /// Draw the footer elements /// </summary> /// <param name="excelToPdfConverter">The Excel to PDF Converter object</param> /// <param name="addPageNumbers">A flag indicating if the page numbering is present in footer</param> /// <param name="drawFooterLine">A flag indicating if a line should be drawn at the top of the footer</param> private void DrawFooter(ExcelToPdfConverter excelToPdfConverter, bool addPageNumbers, bool drawFooterLine) { string footerImagePath = System.IO.Path.Combine(Application.StartupPath, @"DemoAppFiles\Input\Images\logo.jpg"); // Set the footer height in points excelToPdfConverter.PdfFooterOptions.FooterHeight = 60; // Set footer background color excelToPdfConverter.PdfFooterOptions.FooterBackColor = Color.WhiteSmoke; // Set logo ImageElement headerImage = new ImageElement(5, 5, 100, 50, footerImagePath); excelToPdfConverter.PdfFooterOptions.AddElement(headerImage); // Add page numbering if (addPageNumbers) { // Create a text element with page numbering place holders &p; and & P; TextElement footerText = new TextElement(0, 30, "Page &p; of &P; ", new System.Drawing.Font(new System.Drawing.FontFamily("Times New Roman"), 10, System.Drawing.GraphicsUnit.Point)); // Align the text at the right of the footer footerText.TextAlign = HorizontalTextAlign.Right; // Set page numbering text color footerText.ForeColor = Color.Navy; // Embed the text element font in PDF footerText.EmbedSysFont = true; // Add the text element to footer excelToPdfConverter.PdfFooterOptions.AddElement(footerText); } if (drawFooterLine) { // Calculate the footer width based on PDF page size and margins float footerWidth = excelToPdfConverter.PdfDocumentOptions.PdfPageOrientation == PdfPageOrientation.Portrait ? excelToPdfConverter.PdfDocumentOptions.PdfPageSize.Width : excelToPdfConverter.PdfDocumentOptions.PdfPageSize.Height - excelToPdfConverter.PdfDocumentOptions.LeftMargin - excelToPdfConverter.PdfDocumentOptions.RightMargin; // Create a line element for the top of the footer LineElement footerLine = new LineElement(0, 0, footerWidth, 0); // Set line color footerLine.ForeColor = Color.Gray; // Add line element to the bottom of the footer excelToPdfConverter.PdfFooterOptions.AddElement(footerLine); } } |
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