Add 91 example(s) for working-with-tables

Author: agent-aspose-pdf-examples

working-with-tables/add-auto-numbered-column-to-pdf-table.cs

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+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using Aspose.Pdf;
+using Aspose.Pdf.Text;
+
+class Program
+{
+    static void Main()
+    {
+        // Paths (adjust as needed)
+        const string outputPath = "AutoNumberedTable.pdf";
+
+        // Create a new PDF document
+        using (Document doc = new Document())
+        {
+            // Add a page to the document
+            Page page = doc.Pages.Add();
+
+            // Create a table with two columns
+            Table table = new Table
+            {
+                // Optional: set table position and width
+                Left = 50,
+                Top = 700,
+                ColumnWidths = "50 200" // first column 50 units, second column 200 units
+            };
+
+            // Sample data for the second column
+            string[] data = { "Apple", "Banana", "Cherry", "Date", "Elderberry" };
+
+            // Add rows: first column will be filled later with numbers
+            foreach (string item in data)
+            {
+                // Add a new row
+                Row row = table.Rows.Add();
+
+                // Add empty cell for the auto‑numbered column
+                row.Cells.Add(new Cell());
+
+                // Add cell with actual data
+                Cell dataCell = new Cell();
+                dataCell.Paragraphs.Add(new TextFragment(item));
+                row.Cells.Add(dataCell);
+            }
+
+            // Insert sequential numbers into the first cell of each row
+            for (int i = 0; i < table.Rows.Count; i++)
+            {
+                Row row = table.Rows[i];
+                // Ensure the first cell exists
+                if (row.Cells.Count > 0)
+                {
+                    // Clear any existing content (if any) and add the number
+                    row.Cells[0].Paragraphs.Clear();
+                    row.Cells[0].Paragraphs.Add(new TextFragment((i + 1).ToString()));
+                }
+            }
+
+            // Add the table to the page
+            page.Paragraphs.Add(table);
+
+            // Save the PDF – guard against missing GDI+ (libgdiplus) on non‑Windows platforms
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                doc.Save(outputPath);
+                Console.WriteLine($"PDF saved to '{outputPath}'.");
+            }
+            else
+            {
+                try
+                {
+                    doc.Save(outputPath);
+                    Console.WriteLine($"PDF saved to '{outputPath}'.");
+                }
+                catch (TypeInitializationException ex) when (ContainsDllNotFound(ex))
+                {
+                    Console.WriteLine("Warning: GDI+ (libgdiplus) is not available on this platform. PDF was not saved.");
+                }
+            }
+        }
+    }
+
+    // Helper that walks the inner‑exception chain looking for a DllNotFoundException
+    private static bool ContainsDllNotFound(Exception? ex)
+    {
+        while (ex != null)
+        {
+            if (ex is DllNotFoundException)
+                return true;
+            ex = ex.InnerException;
+        }
+        return false;
+    }
+}

working-with-tables/add-centered-paragraph-to-table-cell.cs

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+using System;
+using System.IO;
+using Aspose.Pdf;
+using Aspose.Pdf.Text;
+
+class Program
+{
+    static void Main()
+    {
+        // Input and output file paths
+        const string inputPdf  = "input.pdf";
+        const string outputPdf = "output.pdf";
+
+        // Ensure the input file exists
+        if (!File.Exists(inputPdf))
+        {
+            Console.Error.WriteLine($"Input file not found: {inputPdf}");
+            return;
+        }
+
+        // Open the existing PDF document
+        using (Document doc = new Document(inputPdf))
+        {
+            // Get the first page (pages are 1‑based)
+            Page page = doc.Pages[1];
+
+            // Create a table and add it to the page
+            Table table = new Table
+            {
+                // Optional: set table position and column widths
+                Left = 50,
+                Top  = 700,
+                ColumnWidths = "200"
+            };
+            page.Paragraphs.Add(table);
+
+            // Add a row to the table
+            Row row = table.Rows.Add();
+
+            // Add a cell to the row
+            Cell cell = row.Cells.Add();
+
+            // Create a paragraph (TextFragment) with centered alignment
+            TextFragment paragraph = new TextFragment("Centered text in cell")
+            {
+                // HorizontalAlignment is defined in BaseParagraph
+                HorizontalAlignment = HorizontalAlignment.Center
+            };
+
+            // Add the paragraph to the cell's Paragraphs collection
+            cell.Paragraphs.Add(paragraph);
+
+            // Save the modified PDF
+            doc.Save(outputPdf);
+        }
+
+        Console.WriteLine($"PDF saved to '{outputPdf}'.");
+    }
+}

working-with-tables/add-footnote-references-in-table-cells.cs

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+using System;
+using System.IO;
+using Aspose.Pdf;
+using Aspose.Pdf.Text;
+using Aspose.Pdf.Tagged;
+using Aspose.Pdf.LogicalStructure;
+
+class Program
+{
+    static void Main()
+    {
+        const string inputPath = "input.pdf";
+        const string outputPath = "output_footnotes.pdf";
+
+        if (!File.Exists(inputPath))
+        {
+            Console.Error.WriteLine($"File not found: {inputPath}");
+            return;
+        }
+
+        // Load the source PDF
+        using (Document doc = new Document(inputPath))
+        {
+            // Enable tagged content and set basic properties
+            ITaggedContent tagged = doc.TaggedContent;
+            tagged.SetLanguage("en-US");
+            tagged.SetTitle("Document with footnotes");
+
+            // Work with the first page
+            Page page = doc.Pages[1];
+
+            // Create a simple table (2 columns)
+            Table table = new Table
+            {
+                ColumnWidths = "200 200"
+            };
+            page.Paragraphs.Add(table);
+
+            // Header row
+            Row header = table.Rows.Add();
+            header.Cells.Add("Item");
+            header.Cells.Add("Description");
+
+            // Data row with a footnote reference in the second cell
+            Row dataRow = table.Rows.Add();
+            dataRow.Cells.Add("Widget A"); // first cell
+
+            // Second cell – contains superscript number and a footnote
+            Cell footnoteCell = dataRow.Cells.Add();
+
+            // TextFragment with superscript "1" (Unicode U+00B9)
+            TextFragment tf = new TextFragment("Widget A description\u00B9");
+            tf.TextState.Font = FontRepository.FindFont("Helvetica");
+            tf.TextState.FontSize = 12;
+
+            // Create the footnote content
+            Note footNote = new Note("This widget is a prototype used for testing.");
+
+            // Associate the footnote with the TextFragment
+            tf.FootNote = footNote;
+
+            // Add the TextFragment to the cell
+            footnoteCell.Paragraphs.Add(tf);
+
+            // Save the modified PDF
+            doc.Save(outputPath);
+        }
+
+        Console.WriteLine($"Saved PDF with footnotes to '{outputPath}'.");
+    }
+}

working-with-tables/add-hyperlink-to-table-cell.cs

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+using System;
+using System.IO;
+using Aspose.Pdf;
+using Aspose.Pdf.Annotations;
+using Aspose.Pdf.Text;
+
+class Program
+{
+    static void Main()
+    {
+        const string inputPath  = "input.pdf";
+        const string outputPath = "output.pdf";
+
+        if (!File.Exists(inputPath))
+        {
+            Console.Error.WriteLine($"File not found: {inputPath}");
+            return;
+        }
+
+        // Load the existing PDF
+        using (Document doc = new Document(inputPath))
+        {
+            // Get the first page (1‑based indexing)
+            Page page = doc.Pages[1];
+
+            // Create a table and add it to the page
+            Table table = new Table();
+            page.Paragraphs.Add(table);
+
+            // Add a single row and a single cell
+            Row row = table.Rows.Add();
+            Cell cell = row.Cells.Add();
+
+            // Add visible text to the cell
+            cell.Paragraphs.Add(new TextFragment("Click here for more info"));
+
+            // Define the rectangle area for the hyperlink.
+            // Coordinates are in points, origin is bottom‑left of the page.
+            // Adjust these values to fit the actual cell position as needed.
+            Aspose.Pdf.Rectangle linkRect = new Aspose.Pdf.Rectangle(
+                llx: 100,   // left
+                lly: 500,   // bottom
+                urx: 250,   // right
+                ury: 520    // top
+            );
+
+            // Create a LinkAnnotation that points to an external URL
+            LinkAnnotation link = new LinkAnnotation(page, linkRect)
+            {
+                // Use GoToURIAction for external web links (preferred over Hyperlink property)
+                Action = new GoToURIAction("https://www.example.com")
+            };
+
+            // Add the annotation to the cell's paragraph collection.
+            // LinkAnnotation derives from BaseParagraph, so it can be added here.
+            cell.Paragraphs.Add(link);
+
+            // Save the modified PDF
+            doc.Save(outputPath);
+        }
+
+        Console.WriteLine($"PDF with hyperlink saved to '{outputPath}'.");
+    }
+}

working-with-tables/add-multiline-text-to-table-cell.cs

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+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using Aspose.Pdf;
+using Aspose.Pdf.Text;
+
+class Program
+{
+    static void Main()
+    {
+        const string outputPath = "multiline_cell.pdf";
+
+        // Create a new PDF document
+        using (Document doc = new Document())
+        {
+            // Add a page
+            Page page = doc.Pages.Add();
+
+            // Create a table and add it to the page
+            Table table = new Table
+            {
+                // Optional: set column widths (single column in this example)
+                ColumnWidths = "200"
+            };
+            page.Paragraphs.Add(table);
+
+            // Add a row to the table
+            Row row = table.Rows.Add();
+
+            // Add a cell to the row
+            Cell cell = row.Cells.Add();
+
+            // First line of text
+            TextFragment line1 = new TextFragment("First line of text");
+            line1.TextState.FontSize = 12;
+            line1.TextState.Font = FontRepository.FindFont("Helvetica");
+            line1.TextState.ForegroundColor = Color.Black;
+
+            // Line break fragment (empty text with a newline)
+            TextFragment lineBreak = new TextFragment("\n");
+
+            // Second line of text
+            TextFragment line2 = new TextFragment("Second line of text");
+            line2.TextState.FontSize = 12;
+            line2.TextState.Font = FontRepository.FindFont("Helvetica");
+            line2.TextState.ForegroundColor = Color.Black;
+
+            // Third line of text
+            TextFragment line3 = new TextFragment("Third line of text");
+            line3.TextState.FontSize = 12;
+            line3.TextState.Font = FontRepository.FindFont("Helvetica");
+            line3.TextState.ForegroundColor = Color.Black;
+
+            // Add the fragments to the cell, separating them with line‑break fragments
+            cell.Paragraphs.Add(line1);
+            cell.Paragraphs.Add(lineBreak);
+            cell.Paragraphs.Add(line2);
+            cell.Paragraphs.Add(lineBreak);
+            cell.Paragraphs.Add(line3);
+
+            // Save the document (guard against missing GDI+ on non‑Windows platforms)
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                doc.Save(outputPath);
+                Console.WriteLine($"PDF saved to '{outputPath}'.");
+            }
+            else
+            {
+                try
+                {
+                    doc.Save(outputPath);
+                    Console.WriteLine($"PDF saved to '{outputPath}'.");
+                }
+                catch (TypeInitializationException ex) when (ContainsDllNotFound(ex))
+                {
+                    Console.WriteLine("Warning: GDI+ (libgdiplus) is not available on this platform. PDF was not saved.");
+                }
+            }
+        }
+    }
+
+    // Helper to detect a nested DllNotFoundException
+    static bool ContainsDllNotFound(Exception ex)
+    {
+        while (ex != null)
+        {
+            if (ex is DllNotFoundException)
+                return true;
+            ex = ex.InnerException;
+        }
+        return false;
+    }
+}