This article demonstrates how to detect the used themes in a PowerPoint document using Spire.Presentation.
Detail steps:
Step 1: Instantiate a Presentation object and load the PowerPoint document.
Presentation ppt = new Presentation(); ppt.LoadFromFile(@"Sample.pptx");
Step 2: Get the theme name of each slide in the document.
StringBuilder sb = new StringBuilder();
string themeName = null;
foreach (ISlide slide in ppt.Slides)
{
themeName = slide.Theme.Name;
sb.AppendLine(themeName);
}
Step 3: Save to a .txt file.
File.WriteAllText("themeName.txt", sb.ToString());
Output:
Full code:
using Spire.Presentation;
using System.IO;
using System.Text;
namespace DetectThemes
{
class Program
{
static void Main(string[] args)
{
//Instantiate a Presentation object
Presentation ppt = new Presentation();
//Load the PowerPoint document
ppt.LoadFromFile(@"Sample.pptx");
StringBuilder sb = new StringBuilder();
string themeName = null;
//Get the theme name of each slide in the document
foreach (ISlide slide in ppt.Slides)
{
themeName = slide.Theme.Name;
sb.AppendLine(themeName);
}
//Save to a .txt file
File.WriteAllText("themeName.txt", sb.ToString());
}
}
}
