How to modify an existing table in a document using C# and .NET

  1. Add SautinSoft.Document from Nuget.
  2. Load a DOCX document.
  3. Find a first table.
  4. Change the table format.
  5. Save the document.

In the first table of the document, we will change the fill color and the cell border type.


Complete code

using System.IO;
using System.Linq;
using SautinSoft.Document;
using SautinSoft.Document.Tables;

namespace Sample
{
    class Sample
    {
        static void Main(string[] args)
        {
            // Get your free 30-day key here:   
            // https://sautinsoft.com/start-for-free/

            ModifyTable();
        }

        /// <summary>
        /// How to modify an existing table in a document.
        /// </summary>
        /// <remarks>
        /// Details: https://sautinsoft.com/products/document/help/net/developer-guide/modify-table.php
        /// </remarks>
        public static void ModifyTable()
        {
            string sourcePath = @"..\..\..\table.docx";
            string destPath = "Table modified.docx";

            // Load a document with a table.
            DocumentCore dc = DocumentCore.Load(sourcePath);

            // Find a first table in the document.
            Table table = (Table)dc.GetChildElements(true, ElementType.Table).First();

            // Set dashed borders and yellow background for all cells.
            for (int r = 0; r < table.Rows.Count; r++)
            {
                for (int c = 0; c < table.Rows[r].Cells.Count; c++)
                {
                    TableCell cell = table.Rows[r].Cells[c];
                    cell.CellFormat.Borders.SetBorders(MultipleBorderTypes.Outside, BorderStyle.Dashed, Color.Black, 1);
                    cell.CellFormat.BackgroundColor = new Color("#FFCC00");
                }
            }

            // Save the document as DOCX.
            dc.Save(destPath, new DocxSaveOptions());

            // Show the source and the dest documents.
            System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(sourcePath) { UseShellExecute = true });
            System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(destPath) { UseShellExecute = true });
        }
    }
}

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Imports System
Imports System.IO
Imports System.Linq
Imports SautinSoft.Document
Imports SautinSoft.Document.Tables

Module Sample
    Sub Main()
        ModifyTable()
    End Sub
    ''' Get your free 30-day key here:   
    ''' https://sautinsoft.com/start-for-free/
    ''' <summary>
    ''' How to modify an existing table in a document.
    ''' </summary>
    ''' <remarks>
    ''' Details: https://sautinsoft.com/products/document/help/net/developer-guide/modify-table.php
    ''' </remarks>
    Sub ModifyTable()
        Dim sourcePath As String = "..\..\..\table.docx"
        Dim destPath As String = "Table modified.docx"

        ' Load a document with a table.
        Dim dc As DocumentCore = DocumentCore.Load(sourcePath)

        ' Find a first table in the document.
        Dim table As Table = CType(dc.GetChildElements(True, ElementType.Table).First(), Table)

        ' Set dashed borders and yellow background for all cells.
        For r As Integer = 0 To table.Rows.Count - 1
            Dim c As Integer = 0
            Do While c < table.Rows(r).Cells.Count
                Dim cell As TableCell = table.Rows(r).Cells(c)
                cell.CellFormat.Borders.SetBorders(MultipleBorderTypes.Outside, BorderStyle.Dashed, Color.Black, 1)
                cell.CellFormat.BackgroundColor = New Color("#FFCC00")
                c += 1
            Loop
        Next r

        ' Save the document as DOCX.
        dc.Save(destPath, New DocxSaveOptions())

        ' Show the source and the dest documents.
        System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(sourcePath) With {.UseShellExecute = True})
        System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(destPath) With {.UseShellExecute = True})
    End Sub
End Module

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