How to Add an Image to Slide Master in C#, VB.NET

A slide master is the top slide that stores the information about the theme and slide layouts, which will be inherited by other slides in the presentation. In other words, when you modify the style of slide master, every slide in the presentation will be changed accordingly, including the ones added later.

This quality makes it possible that when you want to insert an image or watermark to every slide, you only need to insert the image in slide master. In this article, you'll learn how to add an image to slide master using Spire.Presenation in C#, VB.NET.

Screenshot of original file:

Detailed Steps:

Step 1: Initialize a new Presentation and load the sample file

Presentation presentation = new Presentation();
presentation.LoadFromFile(@"sample.pptx");

Step 2: Get the master collection.

IMasterSlide master = presentation.Masters[0];

Step 3: Insert an image to slide master.

String image = @"logo.png";
RectangleF rff = new RectangleF(40, 40, 100, 80);
IEmbedImage pic=master.Shapes.AppendEmbedImage(ShapeType.Rectangle, image, rff);
pic.Line.FillFormat.FillType = FillFormatType.None;

Step 4: Add a new blank slide to the presentation.

presentation.Slides.Append();

Step 5: Save and launch the file.

presentation.SaveToFile("result.pptx", FileFormat.Pptx2010);
System.Diagnostics.Process.Start("result.pptx");

Output:

How to Add an Image to Slide Master in C#, VB.NET

Full Code:

[C#]

using Spire.Presentation;
using Spire.Presentation.Drawing;
using System;
using System.Drawing;

namespace AddImage
{

    class Program
    {

        static void Main(string[] args)
        {
            //initialize a new Presentation and load the sample file
            Presentation presentation = new Presentation();
            presentation.LoadFromFile(@"sample.pptx");
            //get the master collection
            IMasterSlide master = presentation.Masters[0];
            //append image to slide master
            String image = @"logo.png";
            RectangleF rff = new RectangleF(40, 40, 100, 80);
            IEmbedImage pic = master.Shapes.AppendEmbedImage(ShapeType.Rectangle, image, rff);
            pic.Line.FillFormat.FillType = FillFormatType.None;
            //add new slide to presentation
            presentation.Slides.Append();
            //save and launch the file
            presentation.SaveToFile("result.pptx", FileFormat.Pptx2010);
            System.Diagnostics.Process.Start("result.pptx");
        }
    }
}

[VB.NET]

Imports Spire.Presentation
Imports Spire.Presentation.Drawing
Imports System.Drawing

Namespace AddImage

	Class Program

		Private Shared Sub Main(args As String())
			'initialize a new Presentation and load the sample file
			Dim presentation As New Presentation()
			presentation.LoadFromFile("sample.pptx")
			'get the master collection
			Dim master As IMasterSlide = presentation.Masters(0)
			'append image to slide master
			Dim image As [String] = "logo.png"
			Dim rff As New RectangleF(40, 40, 100, 80)
			Dim pic As IEmbedImage = master.Shapes.AppendEmbedImage(ShapeType.Rectangle, image, rff)
			pic.Line.FillFormat.FillType = FillFormatType.None
			'add new slide to presentation
			presentation.Slides.Append()
			'save and launch the file
			presentation.SaveToFile("result.pptx", FileFormat.Pptx2010)
			System.Diagnostics.Process.Start("result.pptx")
		End Sub
	End Class
End Namespace

How to Add an Image to Slide Master in C#, VB.NET

See Also