DOCX: Programmatically edit an existing DOCX document using low-lewel editor

In This Topic

The DocxDocumentEditor class is a low-level editor for existing DOCX document, i.e. class allows to edit a DOCX document in terms of Open XML document.

The DocxDocumentEditor class is designed for fast and easy development of report/invoice generator based on DOCX document template.

If you want to generate DOCX report/invoice, you need to do the following steps:

Open Microsoft Word:
- Create new DOCX document or open existing DOCX document -DOCX document will be used as a template for report/invoice.
- Change content of DOCX document. Document must contain all necessary markup except dynamic data.Places for dynamic data must be marked with unique text constants.
In the code:
- Open template document using DocxDocumentEditor class andadd dynamic data (replace text, insert table rows, replace images, etc) to the document.
- Save changed document to a DOCX file using OpenXmlDocumentEditor.Save method orexport changed document using OpenXmlDocumentEditor.Export method to any format that is supported by VintaSoft Imaging SDK (PDF, PDF/A, TIFF, ...).

Report Generator Demo project contains several examples,which demonstrate how to generate reports, which are based on DOCX template.

DocxDocumentEditor class

DocxDocumentEditor class allows to:

open an existing DOCX document from a file or stream
get access to the content (text, tables, images, etc) of DOCX document - OpenXmlDocumentEditor.Body
get access to the tables of DOCX document - DocxDocumentEditor.Tables
get access to the images of DOCX document - OpenXmlDocumentEditor.Images
get access to the charts of DOCX document - OpenXmlDocumentEditor.Charts
get access to the properties (title, creator, etc.) of DOCX document - OpenXmlDocumentEditor.DocumentProperties
save DOCX document to a file or stream - OpenXmlDocumentEditor.Save
export DOCX document to any format that is supported by VintaSoft Imaging SDK (PDF, PDF/A, TIFF, ...) - OpenXmlDocumentEditor.Export

OpenXmlDocumentElement class

OpenXmlDocumentElement represents a base class of all elements in a DOCX or XLSX document and allows to:

get or set text of element - OpenXmlDocumentElement.Text
find text in element - OpenXmlDocumentElement.FindText
replace text in element - OpenXmlDocumentElement.ReplaceText
set text properties in element - OpenXmlDocumentElement.SetTextProperties
set fill color of an element - OpenXmlDocumentElement.SetFillColor
find element that is located before this element - OpenXmlDocumentElement.FindBefore
find element that is located after this element - OpenXmlDocumentElement.FindAfter
remove this element from document - OpenXmlDocumentElement.Remove
insert copy of this element after self - OpenXmlDocumentElement.InsertCopyAfterSelf
insert copy of this element before self - OpenXmlDocumentElement.InsertCopyBeforeSelf
copy this element - OpenXmlDocumentElement.Clone
access parent element of this element - OpenXmlDocumentElement.Parent
access child elements of this element - OpenXmlDocumentElement.ChildElements

Here is C#/VB.NET code that shows how to find and replace text in DOCX document (example uses template document FindAndReplaceText_template.docx):

public static void DocxFindAndReplaceTextExample()
{
    string templateFilename = "FindAndReplaceText_template.docx";
    string outFilename = "FindAndReplaceText.docx";
    string outPdfFilename = "FindAndReplaceText.pdf";

    // create DocxDocumentEditor that allows to edit file "FindAndReplaceText_template.docx"
    using (Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor editor =
        new Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor(templateFilename))
    {
        // get document body
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentElement documentBody = editor.Body;

        // replace first occurrence of text "[field1]" by text "value1"
        documentBody["[field1]"] = "value1";

        // replace all occurrences of text "[field2]" by text "value2"
        documentBody.ReplaceText("[field2]", "value2");

        // find text content that corresponds to the text "[field3]"
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextContent field3Content = documentBody.FindText("[field3]");
        // change text in found text content
        field3Content.Text = "value3";

        // replace text "[multiline_field]" by multiline text
        documentBody["[multiline_field]"] = "\nline1\nline2\nline3";

        // save changed document to a DOCX file
        editor.Save(outFilename);

        // export changed document to a PDF document
        editor.Export(outPdfFilename);
    }
}

VB.NET

Public Shared Sub DocxFindAndReplaceTextExample()
    Dim templateFilename As String = "FindAndReplaceText_template.docx"
    Dim outFilename As String = "FindAndReplaceText.docx"
    Dim outPdfFilename As String = "FindAndReplaceText.pdf"

    ' create DocxDocumentEditor that allows to edit file "FindAndReplaceText_template.docx"
    Using editor As New Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor(templateFilename)
        ' get document body
        Dim documentBody As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentElement = editor.Body

        ' replace first occurrence of text "[field1]" by text "value1"
        documentBody("[field1]") = "value1"

        ' replace all occurrences of text "[field2]" by text "value2"
        documentBody.ReplaceText("[field2]", "value2")

        ' find text content that corresponds to the text "[field3]"
        Dim field3Content As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextContent = documentBody.FindText("[field3]")
        ' change text in found text content
        field3Content.Text = "value3"

        ' replace text "[multiline_field]" by multiline text
        documentBody("[multiline_field]") = vbLf & "line1" & vbLf & "line2" & vbLf & "line3"

        ' save changed document to a DOCX file
        editor.Save(outFilename)

        ' export changed document to a PDF document
        editor.Export(outPdfFilename)
    End Using
End Sub

OpenXmlTextContent class

OpenXmlTextContent represents the text content of DOCX or XLSX document and allows to:

replace text - OpenXmlTextContent.Text
set text properties - OpenXmlTextContent.SetTextProperties
find element before text - OpenXmlTextContent.FindBefore
find element after text - OpenXmlTextContent.FindAfter

Here is C#/VB.NET code that shows how to change text properties of text content (example uses template document ChangeTextProperties_template.docx):

public static void DocxChangeTextPropertiesExample()
{
    string templateFilename = "ChangeTextProperties_template.docx";
    string outFilename = "ChangeTextProperties.docx";
    string outPdfFilename = "ChangeTextProperties.pdf";

    // create DocxDocumentEditor that allows to edit file "ChangeTextProperties_template.docx"
    using (Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor editor =
        new Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor(templateFilename))
    {
        // get document body
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentElement documentBody = editor.Body;

        // set text color
        documentBody.FindText("COLOR").Substring(0, 2).SetTextProperties(CreateColorTextProperties(System.Drawing.Color.Red));
        documentBody.FindText("COLOR").Substring(2, 1).SetTextProperties(CreateColorTextProperties(System.Drawing.Color.Green));
        documentBody.FindText("COLOR").Substring(3, 2).SetTextProperties(CreateColorTextProperties(System.Drawing.Color.Blue));

        // highlight text
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties highlightedTextProperties =
            new Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties();
        highlightedTextProperties.Highlight = Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextHighlightType.Green;
        documentBody.FindText("highlighted text").SetTextProperties(highlightedTextProperties);

        // set text "bold text" as bold text
        documentBody.FindText("bold text").SetTextProperties(Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties.BoldText);

        // set text "italic text" as italic text
        documentBody.FindText("italic text").SetTextProperties(Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties.ItalicText);

        // set text "underline text" as underline text
        documentBody.FindText("underline text").SetTextProperties(Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties.UnderlineText);

        // set text "strike text" as striked out text
        documentBody.FindText("strike text").SetTextProperties(Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties.StrikeText);

        // change font size
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties setTextSize =
            new Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties();
        setTextSize.FontSize = 16;
        documentBody.FindText("text with size 16pt").Substring(0, 4).SetTextProperties(setTextSize);

        // change text style
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties setTextStyle =
            new Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties();
        setTextStyle.Style = editor.Styles.FindByName("RedStyle");
        documentBody.FindText("RedStyle").SetTextProperties(setTextStyle);

        // save changed document to a DOCX file
        editor.Save(outFilename);

        // export changed document to a PDF document
        editor.Export(outPdfFilename);
    }
}

/// <summary>
/// Creates the color text properties.
/// </summary>
/// <param name="color">The color.</param>
private static Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties CreateColorTextProperties(System.Drawing.Color color)
{
    Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties result =
        new Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties();
    result.Color = color;
    return result;
}

VB.NET

Public Shared Sub DocxChangeTextPropertiesExample()
    Dim templateFilename As String = "ChangeTextProperties_template.docx"
    Dim outFilename As String = "ChangeTextProperties.docx"
    Dim outPdfFilename As String = "ChangeTextProperties.pdf"

    ' create DocxDocumentEditor that allows to edit file "ChangeTextProperties_template.docx"
    Using editor As New Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor(templateFilename)
        ' get document body
        Dim documentBody As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentElement = editor.Body

        ' set text color
        documentBody.FindText("COLOR").Substring(0, 2).SetTextProperties(CreateColorTextProperties(System.Drawing.Color.Red))
        documentBody.FindText("COLOR").Substring(2, 1).SetTextProperties(CreateColorTextProperties(System.Drawing.Color.Green))
        documentBody.FindText("COLOR").Substring(3, 2).SetTextProperties(CreateColorTextProperties(System.Drawing.Color.Blue))

        ' highlight text
        Dim highlightedTextProperties As New Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties()
        highlightedTextProperties.Highlight = Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextHighlightType.Green
        documentBody.FindText("highlighted text").SetTextProperties(highlightedTextProperties)

        ' set text "bold text" as bold text
        documentBody.FindText("bold text").SetTextProperties(Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties.BoldText)

        ' set text "italic text" as italic text
        documentBody.FindText("italic text").SetTextProperties(Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties.ItalicText)

        ' set text "underline text" as underline text
        documentBody.FindText("underline text").SetTextProperties(Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties.UnderlineText)

        ' set text "strike text" as striked out text
        documentBody.FindText("strike text").SetTextProperties(Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties.StrikeText)

        ' change font size
        Dim setTextSize As New Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties()
        setTextSize.FontSize = 16
        documentBody.FindText("text with size 16pt").Substring(0, 4).SetTextProperties(setTextSize)

        ' change text style
        Dim setTextStyle As New Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties()
        setTextStyle.Style = editor.Styles.FindByName("RedStyle")
        documentBody.FindText("RedStyle").SetTextProperties(setTextStyle)

        ' save changed document to a DOCX file
        editor.Save(outFilename)

        ' export changed document to a PDF document
        editor.Export(outPdfFilename)
    End Using
End Sub

''' <summary>
''' Creates the color text properties.
''' </summary>
''' <param name="color">The color.</param>
Private Shared Function CreateColorTextProperties(color As System.Drawing.Color) As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties
    Dim result As New Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextProperties()
    result.Color = color
    Return result
End Function

OpenXmlDocumentTable class

OpenXmlDocumentTable represents the table of DOCX or XLSX document and allows to:

access to rows of table - OpenXmlDocumentElement.ChildElements
find row that contains specified text - OpenXmlDocumentTable.FindRow
find cell that contains specified text - OpenXmlDocumentTable.FindCell
set borders from sample cell - OpenXmlDocumentTable.SetOutsideBorder

OpenXmlDocumentTableRow class

OpenXmlDocumentTableRow represents the row of DOCX or XLSX table and allows to:

access to cells of row - OpenXmlDocumentElement.ChildElements
set row height - OpenXmlDocumentTableRow.Height
find cell that contains text - OpenXmlDocumentTableRow.FindCell
set row borders from sample cell - OpenXmlDocumentTableRow.SetBorder
set fill color of row - OpenXmlDocumentElement.SetFillColor
insert copy of table row after self - OpenXmlDocumentElement.InsertCopyAfterSelf
insert copy of table row before self - OpenXmlDocumentElement.InsertCopyBeforeSelf
copy table row - OpenXmlDocumentElement.Clone
remove table row from table - OpenXmlDocumentElement.Remove

OpenXmlDocumentTableCell class

OpenXmlDocumentTableCell represents the cell of DOCX or XLSX table and allows to:

access to content of cell - OpenXmlDocumentElement.ChildElements
get or set text of cell - OpenXmlDocumentElement.Text
find cell that contains text - OpenXmlDocumentTableRow.FindCell
set cell borders from sample cell - OpenXmlDocumentTableRow.SetBorder
set fill color of cell - OpenXmlDocumentElement.SetFillColor

Here is C#/VB.NET code that shows how to fill data table (example uses template document CopyTableRow_template.docx):

public static void DocxCopyTableRowExample()
{
    string templateFilename = "CopyTableRow_template.docx";
    string outFilename = "CopyTableRow.docx";
    string outPdfFilename = "CopyTableRow.pdf";

    // create DocxDocumentEditor that allows to edit file "CopyTableRow_template.docx"
    using (Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor editor =
        new Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor(templateFilename))
    {
        // get document body
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentElement documentBody = editor.Body;

        // get the first table
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTable table = editor.Tables[0];
        // get the second table that contains template row
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTableRow templateRow = table[1];
        
        // create an array that contains colors
        System.Drawing.Color[] colors = new System.Drawing.Color[] {
            System.Drawing.Color.Red,
            System.Drawing.Color.Green,
            System.Drawing.Color.Blue,
            System.Drawing.Color.Orange,
            System.Drawing.Color.Yellow
        };
        // for each color
        for (int i = 0; i < colors.Length; i++)
        {
            // insert copy of template row before template row
            Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTableRow rowCopy =
                (Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTableRow)templateRow.InsertCopyBeforeSelf();

            // set row data
            rowCopy[0].Text = string.Format("Copy {0} ({1})", i, colors[i]);
            rowCopy["[cell1]"] = string.Format("cell data {0}", i);

            // set cell colors
            rowCopy[1].SetFillColor(colors[i]);
            rowCopy[2].SetFillColor(colors[i]);

            // if color has odd index in colors array
            if ((i % 2) == 1)
            {
                // set row height to 10mm
                rowCopy.Height = Vintasoft.Imaging.Utils.UnitOfMeasureConverter.ConvertToPoints(10, Vintasoft.Imaging.UnitOfMeasure.Millimeters);
            }
        }

        // remove template row
        templateRow.Remove();

        // save changed document to a DOCX file
        editor.Save(outFilename);

        // export changed document to a PDF document
        editor.Export(outPdfFilename);
    }
}

VB.NET

Public Shared Sub DocxCopyTableRowExample()
    Dim templateFilename As String = "CopyTableRow_template.docx"
    Dim outFilename As String = "CopyTableRow.docx"
    Dim outPdfFilename As String = "CopyTableRow.pdf"

    ' create DocxDocumentEditor that allows to edit file "CopyTableRow_template.docx"
    Using editor As New Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor(templateFilename)
        ' get document body
        Dim documentBody As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentElement = editor.Body

        ' get the first table
        Dim table As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTable = editor.Tables(0)
        ' get the second table that contains template row
        Dim templateRow As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTableRow = table(1)

        ' create an array that contains colors
        Dim colors As System.Drawing.Color() = New System.Drawing.Color() {System.Drawing.Color.Red, System.Drawing.Color.Green, System.Drawing.Color.Blue, System.Drawing.Color.Orange, System.Drawing.Color.Yellow}
        ' for each color
        For i As Integer = 0 To colors.Length - 1
            ' insert copy of template row before template row
            Dim rowCopy As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTableRow = DirectCast(templateRow.InsertCopyBeforeSelf(), Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTableRow)

            ' set row data
            rowCopy(0).Text = String.Format("Copy {0} ({1})", i, colors(i))
            rowCopy("[cell1]") = String.Format("cell data {0}", i)

            ' set cell colors
            rowCopy(1).SetFillColor(colors(i))
            rowCopy(2).SetFillColor(colors(i))

            ' if color has odd index in colors array
            If (i Mod 2) = 1 Then
                ' set row height to 10mm
                rowCopy.Height = Vintasoft.Imaging.Utils.UnitOfMeasureConverter.ConvertToPoints(10, Vintasoft.Imaging.UnitOfMeasure.Millimeters)
            End If
        Next

        ' remove template row
        templateRow.Remove()

        ' save changed document to a DOCX file
        editor.Save(outFilename)

        ' export changed document to a PDF document
        editor.Export(outPdfFilename)
    End Using
End Sub

Here is C#/VB.NET code that shows how to set table borders from sample table cell (example uses template document SetTableBorders_template.docx):

public static void DocxSetTableBordersExample()
{
    string templateFilename = "SetTableBorders_template.docx";
    string outFilename = "SetTableBorders.docx";
    string outPdfFilename = "SetTableBorders.pdf";

    // create DocxDocumentEditor that allows to edit file "SetTableBorders_template.docx"
    using (Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor editor =
        new Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor(templateFilename))
    {
        // get cell border templates
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTable bordersTemplateTable =
            editor.Tables[0];
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTableCell boldBorderTemplate =
            bordersTemplateTable.FindCell("[bold]");
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTableCell colorBorderTemplate =
            bordersTemplateTable.FindCell("[color]");

        // remove border template table
        bordersTemplateTable.Remove();

        // get test table
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTable table = editor.Tables[0];

        // set borders from template cells
        table.FindRow("[bold_row]").SetBorder(boldBorderTemplate);
        table.FindCell("[bold_cell]").SetBorder(boldBorderTemplate);
        table.FindRow("[color_row]").SetBorder(colorBorderTemplate);
        table.FindCell("[color_cell]").SetBorder(colorBorderTemplate);

        // set outside border inside table
        table.SetOutsideBorder(table.FindCell("[bold_first]"), table.FindCell("[bold_last]"), boldBorderTemplate);

        // save changed document to a DOCX file
        editor.Save(outFilename);

        // export changed document to a PDF document
        editor.Export(outPdfFilename);
    }
}

VB.NET

Public Shared Sub DocxSetTableBordersExample()
    Dim templateFilename As String = "SetTableBorders_template.docx"
    Dim outFilename As String = "SetTableBorders.docx"
    Dim outPdfFilename As String = "SetTableBorders.pdf"

    ' create DocxDocumentEditor that allows to edit file "SetTableBorders_template.docx"
    Using editor As New Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor(templateFilename)
        ' get cell border templates
        Dim bordersTemplateTable As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTable = editor.Tables(0)
        Dim boldBorderTemplate As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTableCell = bordersTemplateTable.FindCell("[bold]")
        Dim colorBorderTemplate As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTableCell = bordersTemplateTable.FindCell("[color]")

        ' remove border template table
        bordersTemplateTable.Remove()

        ' get test table
        Dim table As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentTable = editor.Tables(0)

        ' set borders from template cells
        table.FindRow("[bold_row]").SetBorder(boldBorderTemplate)
        table.FindCell("[bold_cell]").SetBorder(boldBorderTemplate)
        table.FindRow("[color_row]").SetBorder(colorBorderTemplate)
        table.FindCell("[color_cell]").SetBorder(colorBorderTemplate)

        ' set outside border inside table
        table.SetOutsideBorder(table.FindCell("[bold_first]"), table.FindCell("[bold_last]"), boldBorderTemplate)

        ' save changed document to a DOCX file
        editor.Save(outFilename)

        ' export changed document to a PDF document
        editor.Export(outPdfFilename)
    End Using
End Sub

OpenXmlDocumentImage class

OpenXmlDocumentImage represents an image of DOCX or XLSX document:

get image as VintasoftImage - OpenXmlDocumentImage.GetImage
set image from VintasoftImage - OpenXmlDocumentImage.SetImage

Here is C#/VB.NET code that shows how to set barcode image in DOCX document (example uses template document SetBarcodeImage_template.docx):

public static void DocxSetBarcodeImageExample()
{
    string templateFilename = "SetBarcodeImage_template.docx";
    string outFilename = "SetBarcodeImage.docx";
    string outPdfFilename = "SetBarcodeImage.pdf";

    // create DocxDocumentEditor that allows to edit file "SetBarcodeImage_template.docx"
    using (Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor editor =
        new Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor(templateFilename))
    {
        // get document body
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentElement documentBody = editor.Body;

        // find text content "Invoice number:"
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextContent textContent = documentBody.FindText("Invoice number:");

        // get barcode value as text of next paragraph after "Invoice number:"
        string barcodeValue = textContent.FindAfter<Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentParagraph>().Text;
        barcodeValue = barcodeValue.TrimEnd('\n');

        // create and setup barcode generator
        Vintasoft.Barcode.BarcodeWriter barcodeGenerator = new Vintasoft.Barcode.BarcodeWriter();
        barcodeGenerator.Settings.Barcode = Vintasoft.Barcode.BarcodeType.QR;
        barcodeGenerator.Settings.SetWidth(200);
        barcodeGenerator.Settings.Value = barcodeValue;

        // generate barcode image
        using (Vintasoft.Imaging.VintasoftImage barcodeImage = 
            new Vintasoft.Imaging.VintasoftImage(barcodeGenerator.GetBarcodeAsVintasoftBitmap(), true))
        {
            // crop barcode to rectangular image
            barcodeImage.Crop(new System.Drawing.Rectangle(0, 0, barcodeImage.Width, barcodeImage.Width));

            // set barcode image to DOCX image at index 0
            editor.Images[0].SetImage(barcodeImage);
        }

        // save changed document to a DOCX file
        editor.Save(outFilename);

        // export changed document to a PDF document
        editor.Export(outPdfFilename);
    }
}

VB.NET

Public Shared Sub DocxSetBarcodeImageExample()
    Dim templateFilename As String = "SetBarcodeImage_template.docx"
    Dim outFilename As String = "SetBarcodeImage.docx"
    Dim outPdfFilename As String = "SetBarcodeImage.pdf"

    ' create DocxDocumentEditor that allows to edit file "SetBarcodeImage_template.docx"
    Using editor As New Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor(templateFilename)
        ' get document body
        Dim documentBody As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentElement = editor.Body

        ' find text content "Invoice number:"
        Dim textContent As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlTextContent = documentBody.FindText("Invoice number:")

        ' get barcode value as text of next paragraph after "Invoice number:"
        Dim barcodeValue As String = textContent.FindAfter(Of Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentParagraph)().Text
        barcodeValue = barcodeValue.TrimEnd(ControlChars.Lf)

        ' create and setup barcode generator
        Dim barcodeGenerator As New Vintasoft.Barcode.BarcodeWriter()
        barcodeGenerator.Settings.Barcode = Vintasoft.Barcode.BarcodeType.QR
        barcodeGenerator.Settings.SetWidth(200)
        barcodeGenerator.Settings.Value = barcodeValue

        ' generate barcode image
        Using barcodeImage As New Vintasoft.Imaging.VintasoftImage(barcodeGenerator.GetBarcodeAsVintasoftBitmap(), True)
            ' crop barcode to rectangular image
            barcodeImage.Crop(New System.Drawing.Rectangle(0, 0, barcodeImage.Width, barcodeImage.Width))

            ' set barcode image to DOCX image at index 0
            editor.Images(0).SetImage(barcodeImage)
        End Using

        ' save changed document to a DOCX file
        editor.Save(outFilename)

        ' export changed document to a PDF document
        editor.Export(outPdfFilename)
    End Using
End Sub

OpenXmlDocumentChart class

OpenXmlDocumentChart represents a chart of DOCX or XLSX document:

get the chart title - OpenXmlDocumentChart.Title
get the chart properties - OpenXmlDocumentChart.Properties
get the chart data - OpenXmlDocumentChart.ChartData

Here is C#/VB.NET code that shows how to create DOCX file with chart (example uses template document Chart.docx):

/// <summary>
/// Creates the DOCX document with chart.
/// </summary>
/// <param name="resultFilePath">The result file path.</param>
public static void CreateDocxWithChart(string resultFilePath)
{
    // path to a template DOCX document with chart
    string templateDocDocumentPath = "Chart.docx";

    // create DOCX document editor on template document with chart
    using (Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor docxDocumentEditor =
        new Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor(templateDocDocumentPath))
    {
        // get chart
        Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentChart chart = docxDocumentEditor.Charts[0];


        // change chart title

        // find title
        chart.Title = "Chart Title Example. " + System.DateTime.Now.ToShortDateString();


        // change chart data

        // create the chart data
        double?[,] chartData = new double?[,] {
             { 55, 32, 23 },
             { 84, 48, 33 },
             { 72, 53, 86 },
             { 34, 82, 11 } };
        // change the chart data
        chart.ChartData.SetData(chartData);


        // save changes
        docxDocumentEditor.Save(resultFilePath);
    }
}

VB.NET

''' <summary>
''' Creates the DOCX document with chart.
''' </summary>
''' <param name="resultFilePath">The result file path.</param>
Public Shared Sub CreateDocxWithChart(resultFilePath As String)
    ' path to a template DOCX document with chart
    Dim templateDocDocumentPath As String = "Chart.docx"

    ' create DOCX document editor on template document with chart
    Using docxDocumentEditor As New Vintasoft.Imaging.Office.OpenXml.Editor.Docx.DocxDocumentEditor(templateDocDocumentPath)
        ' get chart
        Dim chart As Vintasoft.Imaging.Office.OpenXml.Editor.OpenXmlDocumentChart = docxDocumentEditor.Charts(0)


        ' change chart title

        ' find title
        chart.Title = "Chart Title Example. " & System.DateTime.Now.ToShortDateString()


        ' change chart data

        ' create the chart data
        Dim chartData As System.Nullable(Of Double)(,) = New System.Nullable(Of Double)(,) {{55, 32, 23}, {84, 48, 33}, {72, 53, 86}, {34, 82, 11}}
        ' change the chart data
        chart.ChartData.SetData(chartData)


        ' save changes
        docxDocumentEditor.Save(resultFilePath)
    End Using
End Sub

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