PowerPoint paragraph formatting in C# and VB.NET

Name: GemBox.Presentation
Author: GemBox Ltd.

See how to set the paragraph formatting options in your PowerPoint files in C# and VB.NET using the GemBox.Presentation .NET library.

using GemBox.Presentation;

// If using the Professional version, put your serial key below.
ComponentInfo.SetLicense("FREE-LIMITED-KEY");

var presentation = new PresentationDocument();

// Create new slide.
var slide = presentation.Slides.AddNew(SlideLayoutType.Custom);

// Create new text box.
var textBox = slide.Content.AddTextBox(
    ShapeGeometryType.RoundedRectangle, 2, 2, 10, 4, LengthUnit.Centimeter);

// Create new paragraph.
var paragraph = textBox.AddParagraph();

// Set paragraph text.
paragraph.AddRun("This paragraph has the following properties: alignment is justify, after spacing is 100% of the text size, before spacing is 250% of the text size, line spacing is 200% of the text size.");

// Set selected paragraph format.
var format = paragraph.Format;
format.Alignment = HorizontalAlignment.Justify;
format.SpacingAfter = TextSpacing.Single;
format.SpacingBefore = TextSpacing.Multiple(2.5);
format.SpacingLine = TextSpacing.Double;

// Create new paragraph.
paragraph = textBox.AddParagraph();

// Set paragraph text.
paragraph.AddRun("This paragraph has the following properties: alignment is left, indentation before text is 15 points and first line indentation is 25 points.");

// Set selected paragraph format.
paragraph.Format.Alignment = HorizontalAlignment.Left;
paragraph.Format.IndentationBeforeText = Length.From(15, LengthUnit.Point);
paragraph.Format.IndentationSpecial = Length.From(25, LengthUnit.Point);

presentation.Save("Paragraph Formatting.pptx");

Imports GemBox.Presentation

Module Program

    Sub Main()

        ' If using the Professional version, put your serial key below.
        ComponentInfo.SetLicense("FREE-LIMITED-KEY")

        Dim presentation = New PresentationDocument

        ' Create New slide.
        Dim slide = presentation.Slides.AddNew(SlideLayoutType.Custom)

        ' Create New text box.
        Dim textBox = slide.Content.AddTextBox(
            ShapeGeometryType.RoundedRectangle, 2, 2, 10, 4, LengthUnit.Centimeter)

        ' Create New paragraph.
        Dim paragraph = textBox.AddParagraph()

        ' Set paragraph text.
        paragraph.AddRun("This paragraph has the following properties: alignment is justify, after spacing is 100% of the text size, before spacing is 250% of the text size, line spacing is 200% of the text size.")

        ' Set selected paragraph format.
        Dim format = paragraph.Format
        format.Alignment = HorizontalAlignment.Justify
        format.SpacingAfter = TextSpacing.Single
        format.SpacingBefore = TextSpacing.Multiple(2.5)
        format.SpacingLine = TextSpacing.Double

        ' Create New paragraph.
        paragraph = textBox.AddParagraph()

        ' Set paragraph text.
        paragraph.AddRun("This paragraph has the following properties: alignment is left, indentation before text is 15 points and first line indentation is 25 points.")

        ' Set selected paragraph format.
        paragraph.Format.Alignment = HorizontalAlignment.Left
        paragraph.Format.IndentationBeforeText = Length.From(15, LengthUnit.Point)
        paragraph.Format.IndentationSpecial = Length.From(25, LengthUnit.Point)

        presentation.Save("Paragraph Formatting.pptx")
    End Sub
End Module

Screenshot of PowerPoint paragraphs formatted with GemBox.Presentation

PowerPoint paragraph formatting in C# and VB.NET

See also

Next steps